CA2739414C - Telescopic safety post - Google Patents
Telescopic safety post Download PDFInfo
- Publication number
- CA2739414C CA2739414C CA2739414A CA2739414A CA2739414C CA 2739414 C CA2739414 C CA 2739414C CA 2739414 A CA2739414 A CA 2739414A CA 2739414 A CA2739414 A CA 2739414A CA 2739414 C CA2739414 C CA 2739414C
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- Canada
- Prior art keywords
- inner tube
- post
- outer tube
- tube
- spring
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- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3223—Means supported by building floors or flat roofs, e.g. safety railings
- E04G21/3233—Means supported by building floors or flat roofs, e.g. safety railings without permanent provision in the floor or roof
- E04G21/3242—Means supported by building floors or flat roofs, e.g. safety railings without permanent provision in the floor or roof using clamps
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
- E04G25/063—Shores or struts; Chocks telescopic with parts held together by positive means by pins with safety devices to avoid the accidental loss or unlocking of the pin, e.g. chains attaching the pin to the prop
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
- E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G2025/006—Heads therefor, e.g. pivotable
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/04—Shores or struts; Chocks telescopic
- E04G2025/042—Shores or struts; Chocks telescopic with devices to avoid accidental disengagement of the telescopic elements, e.g. during transport
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
A telescopic safety post for use in erecting temporary safety fences between floor slabs on construction sites. More particularly, the invention relates to a spring loaded telescopic safety post with a threaded collar and pin expansion mechanism. The post has an outer tube and an inner tube slidably connected thereto. The outer tube incorporates a threaded section and a cooperating threaded collar. A lock pin is fitted through a slot in the treaded portion of outer tube and a port in the inner tube and is supported on top of the threaded collar. This allows for the vertical adjustment of the inner tube relative to the outer tube by rotation of the threaded collar. This makes the post length adjustment operation familiar to workers and requires little or no training.
Description
TITLE: TELESCOPIC SAFETY POST
FIELD OF THE INVENTION
The invention pertains to a telescopic safety post for use in erecting temporary safety fences, barriers or rails between floor slabs of a building.
More particularly, the invention relates to a spring loaded telescopic safety post.
BACKGROUND OF THE INVENTION
Concrete floors of buildings under construction are typically open at the edges thereof and require temporary barriers to meet safety requirements.
In general, two types of temporary barrier posts systems are commonly used. The first is a short post that is attached to the edges of concrete slabs via a mechanical grip type mechanism or by being attached to the concrete with anchor bolts. The second type of post is a much longer and spans the height between the floor under the post and the underside of the floor slab above.
Mesh fence panels are used with both types of these posts. These panels are usually approximately 42 inches high and span horizontally between the posts. As the exposed edges of floors are often much longer than the length of the mesh fence panels, there is often the need to overlap the panels at one or more post locations to form a continuous protective guardrail protection between the walls and columns at each extremity of floor opening.
In both types of conventional temporary barrier posts, it is necessary to have a connection between the post and the building structure that is easily made and that will remain tight, even when the connection is subjected to intense vibration of the kind that is often present during the construction of new buildings (eg:
from vibration pokers, motorized machinery etc). For this reason, the temporary barrier posts often have a spring-loaded connection between the post and building structure. This spring-load connection provides a constant force of sufficient magnitude to resist the connection becoming loose and allowing the barrier posts to become detached, even if shrinkage of the construction elements occurs (for instance during drying of concrete, or wood).
The long type of temporary barriers posts, in current use, are usually constructed from two tubes of different diameter or sizes that permits one tube to slide into another. In at least one case, the inner tube is fitted with a spring at its lower end that bears upon a pin that is fitted through one or more holes in the outer tube. In one case, the inner tube is pushed downwards to compress the spring by using a lever arrangement prior to being installed. The barrier post is then lifted into a vertical position, close to the exposed edge of the floor and the lever released, allowing the spring to push the inner tube upwards.
Because the height of the post was adjusted (using the pin through the outer tube) just slightly shorter than the height between the top of the floor below and the underside of the floor above, when the spring is released, the post pushes against the floors slabs above and below the post and it becomes tightly installed.
FIELD OF THE INVENTION
The invention pertains to a telescopic safety post for use in erecting temporary safety fences, barriers or rails between floor slabs of a building.
More particularly, the invention relates to a spring loaded telescopic safety post.
BACKGROUND OF THE INVENTION
Concrete floors of buildings under construction are typically open at the edges thereof and require temporary barriers to meet safety requirements.
In general, two types of temporary barrier posts systems are commonly used. The first is a short post that is attached to the edges of concrete slabs via a mechanical grip type mechanism or by being attached to the concrete with anchor bolts. The second type of post is a much longer and spans the height between the floor under the post and the underside of the floor slab above.
Mesh fence panels are used with both types of these posts. These panels are usually approximately 42 inches high and span horizontally between the posts. As the exposed edges of floors are often much longer than the length of the mesh fence panels, there is often the need to overlap the panels at one or more post locations to form a continuous protective guardrail protection between the walls and columns at each extremity of floor opening.
In both types of conventional temporary barrier posts, it is necessary to have a connection between the post and the building structure that is easily made and that will remain tight, even when the connection is subjected to intense vibration of the kind that is often present during the construction of new buildings (eg:
from vibration pokers, motorized machinery etc). For this reason, the temporary barrier posts often have a spring-loaded connection between the post and building structure. This spring-load connection provides a constant force of sufficient magnitude to resist the connection becoming loose and allowing the barrier posts to become detached, even if shrinkage of the construction elements occurs (for instance during drying of concrete, or wood).
The long type of temporary barriers posts, in current use, are usually constructed from two tubes of different diameter or sizes that permits one tube to slide into another. In at least one case, the inner tube is fitted with a spring at its lower end that bears upon a pin that is fitted through one or more holes in the outer tube. In one case, the inner tube is pushed downwards to compress the spring by using a lever arrangement prior to being installed. The barrier post is then lifted into a vertical position, close to the exposed edge of the floor and the lever released, allowing the spring to push the inner tube upwards.
Because the height of the post was adjusted (using the pin through the outer tube) just slightly shorter than the height between the top of the floor below and the underside of the floor above, when the spring is released, the post pushes against the floors slabs above and below the post and it becomes tightly installed.
- 2 -In another design of long post, a spring arrangement is installed at the top of the inner tube. In this case, the post is adjusted to the approximate required height when the post is held vertically in position by the erector, close to the exposed edge of the building. By using a lever mechanism and sometimes in combination with a screw jack (for fine adjustment), the spring at the top of the inner tube is then compressed.
When sufficient compression is applied to the spring, the lever is locked in position and the post is securely help in position by the force of the compressed spring.
In the case of the spring at the top of the inner tube, the spring-loaded end piece enters the end of the inner tube as the spring is compressed. In at least one case, this end piece is painted or otherwise coated with a colour that is highly visible, such as red or yellow. The highly visible spring loaded end piece allows the erector to easily see when the end piece fully enters the end of the inner tube and sufficient spring compression has therefore been obtained.
In at least one case, the coloured, spring loaded, end piece is necessarily small to allow it to fit inside the end of the inner tube. This means that the erector is often obliged to stand away from the post to enable the erector to check that the coloured spring-loaded end piece has fully entered into the inner tube of the post. In at least one case it is necessary to stand back by at least 4 feet (1.2m) in order to clearly see if the end piece has fully entered the top of the inner tube. This means that the erector is obliged to let go of the post and to stand back. This part of the erection
When sufficient compression is applied to the spring, the lever is locked in position and the post is securely help in position by the force of the compressed spring.
In the case of the spring at the top of the inner tube, the spring-loaded end piece enters the end of the inner tube as the spring is compressed. In at least one case, this end piece is painted or otherwise coated with a colour that is highly visible, such as red or yellow. The highly visible spring loaded end piece allows the erector to easily see when the end piece fully enters the end of the inner tube and sufficient spring compression has therefore been obtained.
In at least one case, the coloured, spring loaded, end piece is necessarily small to allow it to fit inside the end of the inner tube. This means that the erector is often obliged to stand away from the post to enable the erector to check that the coloured spring-loaded end piece has fully entered into the inner tube of the post. In at least one case it is necessary to stand back by at least 4 feet (1.2m) in order to clearly see if the end piece has fully entered the top of the inner tube. This means that the erector is obliged to let go of the post and to stand back. This part of the erection
3 -process is dangerous if insufficient compression has been applied to the post spring, leaving the post exposed to falling out of the exposed edge of the building.
Telescopic, tubular posts are not new to construction. This type of post is widely used for metal temporary shoring products, such as post-shores, which are perhaps the most common form of temporary support used globally. Most construction workers would be very familiar with the operation of telescopic shores more than any other form of temporary support systems.
The telescopic posts used as temporary supports, during building construction, differ from the posts used for temporary barriers in that the inner or outer tubes are not spring loaded. In addition, the means of adjusting the height of the posts is usually achieved by the outer tube having a slotted threaded section at its upper end with a threaded collar and a pin that goes through the slot in the threaded portion and through one of a series of holes in the inner tube. This pin rests upon the top of the threaded collar. As the collar is turned up or down the thread at the top of the outer, this has the effect or raising or lowering the inner tube, thus adjusting the overall length of the post.
SUMMARY OF THE INVENTION
A telescopic safety post for use between a top bearing surface and a bottom bearing surface according to the present invention comprises an outer tube having a threaded portion at the top thereof and an inner tube slidable within said outer tube. The threaded portion includes a longitudinal slot for receiving a retaining
Telescopic, tubular posts are not new to construction. This type of post is widely used for metal temporary shoring products, such as post-shores, which are perhaps the most common form of temporary support used globally. Most construction workers would be very familiar with the operation of telescopic shores more than any other form of temporary support systems.
The telescopic posts used as temporary supports, during building construction, differ from the posts used for temporary barriers in that the inner or outer tubes are not spring loaded. In addition, the means of adjusting the height of the posts is usually achieved by the outer tube having a slotted threaded section at its upper end with a threaded collar and a pin that goes through the slot in the threaded portion and through one of a series of holes in the inner tube. This pin rests upon the top of the threaded collar. As the collar is turned up or down the thread at the top of the outer, this has the effect or raising or lowering the inner tube, thus adjusting the overall length of the post.
SUMMARY OF THE INVENTION
A telescopic safety post for use between a top bearing surface and a bottom bearing surface according to the present invention comprises an outer tube having a threaded portion at the top thereof and an inner tube slidable within said outer tube. The threaded portion includes a longitudinal slot for receiving a retaining
- 4 -pin and the inner tube has a series of holes for receiving the retaining pin. A threaded collar cooperates with the threaded portion of the outer tube and allows vertical adjustment of the inner tube relative to the outer tube. A spring loaded top member is attached to the top of the inner tube for frictional engagement with the top bearing surface. A base member is attached to the bottom of the outer tube for frictional engagement with the bottom bearing surface. A visual indicator cooperates with the spring loaded top member to indicate when the spring loaded top member is loaded to a pre-determined compression.
In an aspect of the invention the spring loaded top member includes a sleeve formed to slide over the inner tube. The inner tube includes a coloured portion that is covered by the sleeve when the spring loaded top member is loaded to the pre-determined compression and is exposed when the spring loaded top member is not loaded to the pre-determined compression. This provides a system easily used to confirm the initial installation of the safety posts as well as a clear visual indicator to workers at any time.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 depicts the safety post assembly;
Figure 2 depicts a cross section of the pin and threaded collar adjustment mechanism and spring v-clip structure;
In an aspect of the invention the spring loaded top member includes a sleeve formed to slide over the inner tube. The inner tube includes a coloured portion that is covered by the sleeve when the spring loaded top member is loaded to the pre-determined compression and is exposed when the spring loaded top member is not loaded to the pre-determined compression. This provides a system easily used to confirm the initial installation of the safety posts as well as a clear visual indicator to workers at any time.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 depicts the safety post assembly;
Figure 2 depicts a cross section of the pin and threaded collar adjustment mechanism and spring v-clip structure;
5 -Figure 3 depicts the compressed spring loaded sleeve attached to the top of the inner tube when loaded to a predetermined compression;
Figure 4 depicts the spring loaded sleeve attached to the top of the inner tube when uncompressed;
Figure 5 depicts the clip for attachment of the mesh fence;
Figure 6 depicts the outer tube;
Figure 7 depicts the structure of the top member or base member;
Figure 8 depicts the lock pin and retaining ring structure; and Figure 9 depicts the v-clip.
Figure 10 depicts an alternative short edge projection post for clamping of a safety post about an overhanging floor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 depicts a temporary barrier post 2 that incorporates telescopic tubes. The outer tube 4 incorporates a threaded section 6 of the outer tube 4 and a similar threaded collar 8 and lock pin 10 arrangement associated with the inner tube 16. This structure is similar to support posts used to support concrete floors during the construction of building. Due to this similarity, the temporary barrier post 2 is easily adjusted and workers require little or no training.
As illustrated in figure 3, the temporary barrier post 2 is spring loaded. The top rocking member 12 is fitted with a length of sleeve tube 14 having a larger diameter than the inner tube 16, allowing the inner tube 16 to slide within the sleeve tube 14. This
Figure 4 depicts the spring loaded sleeve attached to the top of the inner tube when uncompressed;
Figure 5 depicts the clip for attachment of the mesh fence;
Figure 6 depicts the outer tube;
Figure 7 depicts the structure of the top member or base member;
Figure 8 depicts the lock pin and retaining ring structure; and Figure 9 depicts the v-clip.
Figure 10 depicts an alternative short edge projection post for clamping of a safety post about an overhanging floor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figure 1 depicts a temporary barrier post 2 that incorporates telescopic tubes. The outer tube 4 incorporates a threaded section 6 of the outer tube 4 and a similar threaded collar 8 and lock pin 10 arrangement associated with the inner tube 16. This structure is similar to support posts used to support concrete floors during the construction of building. Due to this similarity, the temporary barrier post 2 is easily adjusted and workers require little or no training.
As illustrated in figure 3, the temporary barrier post 2 is spring loaded. The top rocking member 12 is fitted with a length of sleeve tube 14 having a larger diameter than the inner tube 16, allowing the inner tube 16 to slide within the sleeve tube 14. This
- 6 -allows the top rocking member 12 and sleeve tube 14 arrangement to slide over the end of the inner tube 16 and move along it. A spring 18 is configured within the sleeve tube 14 prior to fitting the sleeve tube 14 over the end of the inner tube 16. Spring 18 pushes against the underside of the top rocking member 12 and the end of the inner tube 16. The top rocking member 12 and sleeve tube 14 arrangement is secured to the top of the inner tube 16 by a retaining pin 20 that is inserted into vertical slots 22 on either side of the sleeve tube 14 and through a corresponding hole at the top of the inner tube 16 of the post 2. A bottom rocking member 30 is provided at the lower end of the outer tube 4. The rocking members 12 and 30 allow for some angular adjustment.
During installation, the inner tube 16 is extended from the outer tube 4 such that top rocking member 12 and bottom rocking member 30 engage the floor slabs above and below the post 2 respectively. The lock pin 10 is inserted through a slot 56 in the threaded portion 6 of the outer tube 4 and a port 54 in the inner tube 16, as shown in figures 2 and 6. The lock pin is then supported from below by the top of the threaded collar 8. In order to compress the spring 18 located at the top of the inner tube 16 of post 2, the threaded collar 8 is rotated upwardly about the threaded portion 6 of outer tube 4. The lock pin 10 is pushed upwardly in slot 56, causing further extension of inner tube 16.
This extension causes the compression of spring 18. The collar is rotated until the coloured portion 15 of the inner tube 16 is completely covered by the sleeve tube 14.
During installation, the inner tube 16 is extended from the outer tube 4 such that top rocking member 12 and bottom rocking member 30 engage the floor slabs above and below the post 2 respectively. The lock pin 10 is inserted through a slot 56 in the threaded portion 6 of the outer tube 4 and a port 54 in the inner tube 16, as shown in figures 2 and 6. The lock pin is then supported from below by the top of the threaded collar 8. In order to compress the spring 18 located at the top of the inner tube 16 of post 2, the threaded collar 8 is rotated upwardly about the threaded portion 6 of outer tube 4. The lock pin 10 is pushed upwardly in slot 56, causing further extension of inner tube 16.
This extension causes the compression of spring 18. The collar is rotated until the coloured portion 15 of the inner tube 16 is completely covered by the sleeve tube 14.
7 -Although lock pin 10 can be made to have any cross section, it is preferred that the cross section of the lock pin 10 be rectangular, as depicted in figure 8.
This shape provides increased strength compared to traditional round pins and helps prevent bending of the lock pin 10 caused by over tightening of collar 6. Lock pin 10 is rotatably connected to a pin retaining ring 38.
This retaining ring is allowed to slide around the threaded portion 6 of the outer tube 4 and is shaped such that the lock pin 10 can be removed from the slot 56 and port 54 in the inner tube 16, without having to remove the retaining ring from about the threaded portion 6 of the outer tube 4. This maintains the pin on the post 2 even when it is not engaged with the inner tube 16 and outer tube 4.
The top part of the inner tube 16 can be painted with in highly visible colour. The length of the coloured portion 15 will be determined such that it will be completely covered by the sleeve tube 14 when the spring is fully compressed. Because the coloured portion 15 of the inner tube 16 is large and can be easily seen during installation of the post 2, it is not necessary for the erector to release his/her grip of the post and stand at a distance from the post that is sufficient to see if the coloured portion 15 has completely disappeared within the spring-loaded sleeve at the top of the post.
Referring to figure 2, the inner tube 16 of the post 2 is held within the outer tube 4 with a spring V-clip 22 that is located within the lower end of the inner tube 16. This spring v-clip 22 is installed in the inner
This shape provides increased strength compared to traditional round pins and helps prevent bending of the lock pin 10 caused by over tightening of collar 6. Lock pin 10 is rotatably connected to a pin retaining ring 38.
This retaining ring is allowed to slide around the threaded portion 6 of the outer tube 4 and is shaped such that the lock pin 10 can be removed from the slot 56 and port 54 in the inner tube 16, without having to remove the retaining ring from about the threaded portion 6 of the outer tube 4. This maintains the pin on the post 2 even when it is not engaged with the inner tube 16 and outer tube 4.
The top part of the inner tube 16 can be painted with in highly visible colour. The length of the coloured portion 15 will be determined such that it will be completely covered by the sleeve tube 14 when the spring is fully compressed. Because the coloured portion 15 of the inner tube 16 is large and can be easily seen during installation of the post 2, it is not necessary for the erector to release his/her grip of the post and stand at a distance from the post that is sufficient to see if the coloured portion 15 has completely disappeared within the spring-loaded sleeve at the top of the post.
Referring to figure 2, the inner tube 16 of the post 2 is held within the outer tube 4 with a spring V-clip 22 that is located within the lower end of the inner tube 16. This spring v-clip 22 is installed in the inner
- 8 -tube 16 prior to the inner tube 16 being fitted into the top of the outer tube 4. The spring v-clip 22 is compressed and inserted into the bottom end of the inner tube 16. When the arms 48 of spring v-clip 22 (depicted in figures 4 and 9) are aligned with ports 50 in the inner tube 16, the spring v-clip 22 expands to engage the ports 50 with arms 48. The spring v-clip 22 is compressed when the inner tube 16 is inserted into the threaded portion 6 of outer tube 4. Because the internal diameter of the round, tubular threaded section 6 at the top of the outer tube 4 is smaller than the internal dimension between the inside corners of the square portion of the outer tube 4, a step 24 is formed. When the inner tube is fitted into the top of the outer tube 4 of the post 2, the spring v-clip 22 is compressed as it goes through the round threaded portion 6 of the outer tube 4. Once it reaches the square portion of the outer tube 4, the spring v-clip 22 expands outwardly to engage holes 26 of the square tube portion of the outer tube 4.
In doing so, the inner tube 16 can no longer be withdrawn completely form the outer tube 4 of the post 2, because the spring v-clip abuts against the step 24 formed between the threaded portion 6 of the outer tube 4 and the square portion of the outer tube 4. It can be appreciated that holes 26 alternatively be situated in the threaded portion 6 of the outer tube 4.
The spring v-clip 22 engages opposed corners of the square outer tube and therefore maintains a predetermined orientation of the inner circular tube 16 in the outer tube. This predetermined orientation maintains longitudinal alignment of the holes 21 in the
In doing so, the inner tube 16 can no longer be withdrawn completely form the outer tube 4 of the post 2, because the spring v-clip abuts against the step 24 formed between the threaded portion 6 of the outer tube 4 and the square portion of the outer tube 4. It can be appreciated that holes 26 alternatively be situated in the threaded portion 6 of the outer tube 4.
The spring v-clip 22 engages opposed corners of the square outer tube and therefore maintains a predetermined orientation of the inner circular tube 16 in the outer tube. This predetermined orientation maintains longitudinal alignment of the holes 21 in the
- 9 -inner tube with the slot 56 of the outer tube and simplifies insertion of the lock pin 10.
As illustrated in figure 4, the inner tube 16 and outer tube 4 of the post 2, can be separated using slots 26 located in the top of the square portion of the outer tube 4, at the junction between the square portion of the outer tube 4 and the round threaded portion 6. If it is necessary to separate the inner and outer tubes, the spring v-clip 22 must be compressed through the slots 26 at the top of the outer tube 4. When this is done while the inner tube 16 is being pulled from the outer tube 4, the spring v-clip 22 can be deformed to clear the step 24 and allow the inner tube 16 to pass though the threaded round portion 6 of the outer tube 4.
Alternatively step 24 could be shaped slope from the inner wall of the square portion of outer tube 4 to the inner wall of the threaded portion 6 of the outer tube 4. The inner tube 16 could then be removed from the outer tube 4 by applying a pulling force. This would allow the arms 48 of the spring v-clip 22 to cam over the sloped surface, allowing the inner tube 16 to slide out of the outer tube 4.
The spring v-clip 22 performs a second function of preventing the inner tube 16 from falling under its own weight during the installation of the post 2. This allows the erector to pull the inner tube 16 out of the outer tube 4 until the top member 12 comes into contact with the underside of the floor above. The inner tube 16 will remain in place while the erector installs the lock
As illustrated in figure 4, the inner tube 16 and outer tube 4 of the post 2, can be separated using slots 26 located in the top of the square portion of the outer tube 4, at the junction between the square portion of the outer tube 4 and the round threaded portion 6. If it is necessary to separate the inner and outer tubes, the spring v-clip 22 must be compressed through the slots 26 at the top of the outer tube 4. When this is done while the inner tube 16 is being pulled from the outer tube 4, the spring v-clip 22 can be deformed to clear the step 24 and allow the inner tube 16 to pass though the threaded round portion 6 of the outer tube 4.
Alternatively step 24 could be shaped slope from the inner wall of the square portion of outer tube 4 to the inner wall of the threaded portion 6 of the outer tube 4. The inner tube 16 could then be removed from the outer tube 4 by applying a pulling force. This would allow the arms 48 of the spring v-clip 22 to cam over the sloped surface, allowing the inner tube 16 to slide out of the outer tube 4.
The spring v-clip 22 performs a second function of preventing the inner tube 16 from falling under its own weight during the installation of the post 2. This allows the erector to pull the inner tube 16 out of the outer tube 4 until the top member 12 comes into contact with the underside of the floor above. The inner tube 16 will remain in place while the erector installs the lock
- 10 -pin 10 through the inner tube 16 and adjusts the height of the post by rotating the threaded collar 8.
The fence panels are attached to the posts by a L-shaped clip 28 (as depicted in figures 1 and 5) that is attached to the outside of the outer tube 4 at a height that is just above the top of the mesh panels (not shown). This clip rotates over the top of the mesh panel and secures it to the post 2 by capturing the mesh panel between the post 2 and the attachment portion 40 of the L-shaped clip 28. Because the post design is telescopic, the inner tube 16 must be free to travel along the inside of the outer tube 4. If the L-shaped clip 28 was secured to the outer tube 4 via holes 36 (depicted in figure 7) in the central portion of the side of the outer tube 4, it is possible for the L-shaped clip 28 to prevent the inner tube 15 from passing through the outer tube 4 at the point where the L-shaped clip 28 is situated. In order to avoid this problem, the L-shaped clip 28 is secured to the square portion of the outer tube 4 near the corners. This allows the round profile of the inner tube 16 to pass through the outer tube 4 unencumbered by the clip.
The top and bottom of the post 2 are equipped with a top rocking member 12 and base rocking member 30 respectively. In reference to figure 7, the base rocking member 30 is held in place by a pivot arrangement that allows the member to rock from side to side by approximately 5 degrees in all directions. This allows the bearing surface of base rocking member 30 to be in full contact with the building structure above and below the post 2, even if the post 2 is not perfectly vertical.
The fence panels are attached to the posts by a L-shaped clip 28 (as depicted in figures 1 and 5) that is attached to the outside of the outer tube 4 at a height that is just above the top of the mesh panels (not shown). This clip rotates over the top of the mesh panel and secures it to the post 2 by capturing the mesh panel between the post 2 and the attachment portion 40 of the L-shaped clip 28. Because the post design is telescopic, the inner tube 16 must be free to travel along the inside of the outer tube 4. If the L-shaped clip 28 was secured to the outer tube 4 via holes 36 (depicted in figure 7) in the central portion of the side of the outer tube 4, it is possible for the L-shaped clip 28 to prevent the inner tube 15 from passing through the outer tube 4 at the point where the L-shaped clip 28 is situated. In order to avoid this problem, the L-shaped clip 28 is secured to the square portion of the outer tube 4 near the corners. This allows the round profile of the inner tube 16 to pass through the outer tube 4 unencumbered by the clip.
The top and bottom of the post 2 are equipped with a top rocking member 12 and base rocking member 30 respectively. In reference to figure 7, the base rocking member 30 is held in place by a pivot arrangement that allows the member to rock from side to side by approximately 5 degrees in all directions. This allows the bearing surface of base rocking member 30 to be in full contact with the building structure above and below the post 2, even if the post 2 is not perfectly vertical.
- 11 -A connection plate 32 is fixed to the bottom of the outer tube 4. Projecting from this connection plate 32 is a square pivot 34, designed to cooperate with a square hole 44 in the base member 30. This structure prevents the base member 30 from rotating when the threaded collar 8 is turned. The top rocking member 12 is of similar structure and is attached to the top of the sleeve tube 14.
In an alternative embodiment, illustrated in figure 10, the post can be arranged to attach to a free end of an overhanging floor 201. This attachment can include bolting or other known methods of fixation, however it is preferred that the structure clamp the overhanging floor 201. This short edge projection post 199, frictionally engages the upper and lower surfaces of a overhanging floor 201 in a vice-like manner.
The structure consists of a fence support post 200 and an adjustment post 202. The fence support post 200 is fixed to the adjustment post 202 by a transverse beam 204. A second transverse beam 206 is fixed to the bottom of the fence support post 200 at one end of the second transverse beam 206 while the second end is slidably attached to the adjustment post 202 by a collar 208.
Connected to the bottom of the adjustment post is a L-shaped lower clamp member 210 for engagement with the bottom of the overhanging floor 201. The top end of the adjustment post 202 is received in a threaded sleeve 216 fixed below transverse beam 204. The top end of the adjustment post contains a series of ports though the
In an alternative embodiment, illustrated in figure 10, the post can be arranged to attach to a free end of an overhanging floor 201. This attachment can include bolting or other known methods of fixation, however it is preferred that the structure clamp the overhanging floor 201. This short edge projection post 199, frictionally engages the upper and lower surfaces of a overhanging floor 201 in a vice-like manner.
The structure consists of a fence support post 200 and an adjustment post 202. The fence support post 200 is fixed to the adjustment post 202 by a transverse beam 204. A second transverse beam 206 is fixed to the bottom of the fence support post 200 at one end of the second transverse beam 206 while the second end is slidably attached to the adjustment post 202 by a collar 208.
Connected to the bottom of the adjustment post is a L-shaped lower clamp member 210 for engagement with the bottom of the overhanging floor 201. The top end of the adjustment post 202 is received in a threaded sleeve 216 fixed below transverse beam 204. The top end of the adjustment post contains a series of ports though the
- 12 -post. The threaded sleeve 216 contains a slot 218. A pin 214 is passed through a slot in the threaded sleeve 216 and through a port in the adjustment post 202. The pin 214 is supported on its bottom side of by threaded collar 212. As the threaded collar to 212 is twisted upward the pin 214 and adjustment post 202 are raised within slot 218.
The bottom of the support post 200 is received by a spring-loaded sleeve 220. This spring loaded sleeve 220 contains a slot 222 for receiving a second pin 224 that passes through a hole in support post 200 within the spring loaded sleeve 220. The bottom of the spring-loaded sleeve 220 is fixed to a upper clamp member 226.
Since the support post 200 is connected to the adjustment post 202 via transverse beam 204, when the adjustment post 202 is raised, it is effectively shortened. This draws the support post 200 down toward the floor 201. The downward force causes the spring within the spring-loaded sleeve 220 to compress. When a user raises the threaded collar 212, the effective shortening of the adjustment post 202 causes the clamping of the overhanging floor 201 between the upper clamp member 226 and the lower clamp member 210.
In a preferred embodiment, the bottom portion of the support post 200 is equipped with a visual indicator that cooperates with the spring-loaded sleeve 220 to identify if the compression of the spring within the spring loaded sleeve 220 has reached a pre-determined load. This provides a simple visual indication that the clamping force between top clamping member 226 and bottom
The bottom of the support post 200 is received by a spring-loaded sleeve 220. This spring loaded sleeve 220 contains a slot 222 for receiving a second pin 224 that passes through a hole in support post 200 within the spring loaded sleeve 220. The bottom of the spring-loaded sleeve 220 is fixed to a upper clamp member 226.
Since the support post 200 is connected to the adjustment post 202 via transverse beam 204, when the adjustment post 202 is raised, it is effectively shortened. This draws the support post 200 down toward the floor 201. The downward force causes the spring within the spring-loaded sleeve 220 to compress. When a user raises the threaded collar 212, the effective shortening of the adjustment post 202 causes the clamping of the overhanging floor 201 between the upper clamp member 226 and the lower clamp member 210.
In a preferred embodiment, the bottom portion of the support post 200 is equipped with a visual indicator that cooperates with the spring-loaded sleeve 220 to identify if the compression of the spring within the spring loaded sleeve 220 has reached a pre-determined load. This provides a simple visual indication that the clamping force between top clamping member 226 and bottom
- 13 -clamping member 210 is sufficient to safely connect the short edge projection post 199 to the floor 201. Although a variety of visual indicators could be used, the preferred embodiment includes the bottom portion of the support post 200 to be a different colour than the remainder of the post. vibrWhen the pre-determined load has not been reached the panted portion remains visible.
If the pre-determined load is achieved, the support post 200 has been lowered sufficiently such that the painted portion is completely contained within the spring loaded sleeve 220 and cannot be seen.
The guardrails 228 can be attached to support post 200 in any manner known to a person skilled in the art.
However the preferred methods include welding or brackets as explained above.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
If the pre-determined load is achieved, the support post 200 has been lowered sufficiently such that the painted portion is completely contained within the spring loaded sleeve 220 and cannot be seen.
The guardrails 228 can be attached to support post 200 in any manner known to a person skilled in the art.
However the preferred methods include welding or brackets as explained above.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
- 14 -
Claims (5)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A telescopic safety post for use between a top bearing surface and a bottom bearing surface comprising an outer tube having a threaded portion at the top thereof;
said threaded portion having a longitudinal slot for receiving a retaining pin;
an inner tube slidable within said outer tube and slidable through said threaded portion;
said inner tube containing a series of holes for receiving said retaining pin;
a threaded collar cooperating with said threaded portion of said outer tube for supporting said retaining pin and allowing for vertical adjustment of said inner tube relative to said outer tube;
a spring loaded top member attached to the top of said inner tube for frictional engagement with said top bearing surface;
a base member attached to the bottom of said outer tube for frictional engagement with said bottom bearing surface; and a visual indicator cooperating with said spring loaded top member to indicate when said spring loaded top member is loaded to a pre-determined compression.
said threaded portion having a longitudinal slot for receiving a retaining pin;
an inner tube slidable within said outer tube and slidable through said threaded portion;
said inner tube containing a series of holes for receiving said retaining pin;
a threaded collar cooperating with said threaded portion of said outer tube for supporting said retaining pin and allowing for vertical adjustment of said inner tube relative to said outer tube;
a spring loaded top member attached to the top of said inner tube for frictional engagement with said top bearing surface;
a base member attached to the bottom of said outer tube for frictional engagement with said bottom bearing surface; and a visual indicator cooperating with said spring loaded top member to indicate when said spring loaded top member is loaded to a pre-determined compression.
2. A telescopic safety post for use between a top bearing surface and a bottom bearing surface as claimed in claim 1 wherein said spring loaded top member includes a sleeve formed to slide over said inner tube; said inner tube including a coloured portion that is covered by said sleeve when said spring loaded top member is loaded to said pre-determined compression and is exposed when said spring loaded top member is not loaded to said pre-determined compression.
3. A telescopic safety post as claimed in claim 1 or 2 wherein said outer tube is of a rectangular cross section and said threaded portion is a separate component of a generally circular cross section welded to said outer tube.
4. A telescopic safety post as claimed in claim 3 wherein said inner tube is of a circular cross section and said threaded portion includes an axially extending cylindrical port supporting sides of said inner tube.
5. A telescopic safety post as claimed in claims 1, 2, 3 or 4 wherein said inner tube includes a bottom resilient frictional member to maintain said inner and outer tubes in a position when no additional load is applied to said inner tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2739414A CA2739414C (en) | 2011-05-06 | 2011-05-06 | Telescopic safety post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2739414A CA2739414C (en) | 2011-05-06 | 2011-05-06 | Telescopic safety post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2739414A1 CA2739414A1 (en) | 2012-11-06 |
| CA2739414C true CA2739414C (en) | 2018-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2739414A Active CA2739414C (en) | 2011-05-06 | 2011-05-06 | Telescopic safety post |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2739414C (en) |
Cited By (1)
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|---|---|---|---|---|
| EP4368019A1 (en) * | 2022-11-08 | 2024-05-15 | Ziwi Vertriebs GmbH | Device for repelling animals, in particular birds, preferably pigeons |
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| CN103233575A (en) * | 2013-05-06 | 2013-08-07 | 无锡速捷脚手架工程有限公司 | Extensible upright rod |
| ES2740698T3 (en) * | 2014-04-30 | 2020-02-06 | Castillo Enrique Ibanez | Wall erection kit |
| CN104358470A (en) * | 2014-11-21 | 2015-02-18 | 中国南方电网有限责任公司超高压输电公司南宁局 | Novel safety fence |
| ES2607977B1 (en) * | 2015-10-01 | 2017-11-17 | Sistemas Técnicos De Encofrados, S.A. | CLAMP FOR THE COUPLING OF POINTS IN VIGAS, PUNCH THAT INCORPORATES AND ASSEMBLY PROCEDURE |
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| WO2018068103A1 (en) * | 2016-10-14 | 2018-04-19 | Eamus Paul Coote | System, apparatus and method for use in construction to assist in supporting suspended concrete |
| CN109826491B (en) * | 2019-04-03 | 2020-07-14 | 华体建设发展股份有限公司 | Ski field protection network strutting arrangement |
| CN112392327A (en) * | 2020-11-06 | 2021-02-23 | 安徽黎搏装饰工程有限公司 | Building construction guard flap |
| CN112324245A (en) * | 2020-11-06 | 2021-02-05 | 安徽黎搏装饰工程有限公司 | Building construction guard plate |
| CN112627588A (en) * | 2020-12-16 | 2021-04-09 | 湖南鸿云钢模科技有限公司 | Stable form bearing structure for building steel structure |
| CN113356638B (en) * | 2021-06-29 | 2023-03-10 | 中国建筑第七工程局有限公司 | Assembled superimposed sheet installation braced system |
| CN113958152B (en) * | 2021-12-10 | 2022-11-29 | 中国建筑第八工程局有限公司 | Be used for independent support system of assembly type structure construction |
-
2011
- 2011-05-06 CA CA2739414A patent/CA2739414C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4368019A1 (en) * | 2022-11-08 | 2024-05-15 | Ziwi Vertriebs GmbH | Device for repelling animals, in particular birds, preferably pigeons |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2739414A1 (en) | 2012-11-06 |
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| EEER | Examination request |
Effective date: 20160422 |