CN212773366U

CN212773366U - Door type scaffold

Info

Publication number: CN212773366U
Application number: CN202021532987.9U
Authority: CN
Inventors: 陈新
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-23
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a portal scaffold, which comprises a scaffold board and a pair of portal frames arranged in front and back, wherein a group of cross inclined struts are respectively connected between the two sides of the two portal frames, and the scaffold board is horizontally arranged on the portal frames; the door type frame comprises two stands and the ejector pin between two stands, the universal wheel is installed to the stand bottom, the stand hypomere has the external screw thread, the screw-thread fit has a thread bush near the universal wheel position department in the stand hypomere, the fixed support cover that is equipped with an opening down on the thread bush, support the cover and establish on the universal wheel to through the thread bush relative to stand downward motion can make support cover and ground contact and make the universal wheel unsettled. The utility model discloses the condition that rocks appears when can effectively avoiding the staff to operate on gate-type scaffold, and can also be applicable to unevenness ground and use.

Description

Door type scaffold

Technical Field

The utility model relates to a scaffold technical field, concretely relates to gate-type scaffold.

Background

The scaffold is a working platform which is erected for ensuring that each construction process is smoothly carried out, and is divided into an outer scaffold and an inner scaffold according to the erected position; the scaffold can be divided into a wood scaffold, a bamboo scaffold and a steel pipe scaffold according to different materials; the scaffold is divided into a vertical rod type scaffold, a bridge type scaffold, a door type scaffold, a suspension type scaffold, a hanging type scaffold, a lifting type scaffold and a climbing type scaffold according to the structural form.

The portal scaffold is a scaffold widely applied at present, and comprises cross rods, vertical rods, cross inclined struts and the like, and is also called a scaffold or a portal frame because the portal scaffold is like a portal shape. The door type scaffold is convenient to use, but the traditional door type scaffold is poor in protection performance when in use, the universal wheels below the scaffold have a locking function, but the universal wheels are in contact with the ground after all and are in point contact, and the scaffold is easy to shake when workers stand on the scaffold to work; and the normal service environment of scaffold can not satisfy the ground and levels completely, and under the condition on uneven ground, scaffold also is difficult for installing steadily.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: the utility model provides a door-type scaffold, the condition that rocks appears when can effectively avoiding the staff to operate on the scaffold, and can also be applicable to uneven ground and use.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a portal scaffold comprises a scaffold board and a pair of portal frames arranged in front and back, wherein a group of cross inclined struts are connected between two sides of each portal frame respectively, and the scaffold board is horizontally arranged on the portal frames; the door type frame comprises two stands and the ejector pin between two stands, the universal wheel is installed to the stand bottom, the stand hypomere has the external screw thread, the screw-thread fit has a thread bush near the universal wheel position department in the stand hypomere, the fixed support cover that is equipped with an opening down on the thread bush, support the cover and establish on the universal wheel to through the thread bush relative to stand downward motion can make support cover and ground contact and make the universal wheel unsettled.

This gate-type scaffold is in the use, at first the staff passes through the universal wheel with the scaffold and removes to construction position department, through the support cover on the rotatory stand, thereby it is rotatory for stand downstream to drive the thread bush, the support cover is earlier with ground contact, then continue rotatory thread bush until unsettled with the universal wheel, to the equal repetition of the support cover on the stand above-mentioned operation, until all unsettled with four universal wheels of scaffold bottom, replace the universal wheel to play the supporting role to whole scaffold through the support cover, the condition of rocking appears when effectively preventing the staff from the operation on the scaffold. When the scaffold is required to be used on uneven ground, the height difference of uneven ground can be made up by the height of the support cover, so that the scaffold is stably installed on uneven ground.

In the scheme, when the scaffold is in a moving state, the support cover is in a suspended state and is in contact with the ground through the universal wheels; when needs are with the help of scaffold frame construction operation, replace universal wheel and ground contact through the supporting shroud, greatly increased the area of contact on scaffold frame and ground, improved the stability of scaffold frame, the staff stands the difficult rocking of during operation on scaffold frame like this, and the security is higher. Simultaneously can also reply the condition of ground unevenness through this support cover, highly compensate the difference in height of ground unevenness through the self of support cover, let the scaffold frame steadily fix subaerial at the unevenness, the application scope of scaffold frame is wider.

As optimization, two sides of the frame plate are respectively and fixedly connected with corresponding door-shaped frames through a horizontal lifting rod, clamping columns are convexly arranged on the opposite side surfaces of two vertical columns on the same door-shaped frame, and a plurality of clamping columns are arranged at intervals along the height direction of the vertical columns; one end of the lifting rod is provided with a clamping hole matched with the clamping column, the other end of the lifting rod is matched with a sliding seat, and one end of the sliding seat, far away from the lifting rod, is provided with a clamping hole matched with the clamping column; the sliding seat is internally provided with a sliding cavity, the corresponding end of the lifting rod extends into the sliding cavity, and the end part of the lifting rod is fixed with a limiting block which can only slide in the sliding cavity; install the spring in the slip chamber, the inner wall and the stopper fixed connection of stopper are kept away from respectively with the slip chamber in spring both ends to make the sliding seat can slide along lifter length direction through spring deformation.

Like this, because the mounting height of frame board on conventional scaffold frame often is fixed, staff is when using, because the difference of floor height or service environment, often can be because of scaffold frame height is improper, leads to staff's work comparatively tired, increases staff's intensity of labour. Therefore, the fixing of the lifting rod and the upright column can be realized through the matching of the clamping holes at the two ends of the lifting rod and the clamping columns on the side surfaces of the two upright columns; when the height of the scaffold board needs to be changed, only two workers are required to adjust the lifting rods on the front side and the rear side of the scaffold respectively, the specific adjusting method is that the sliding seat is extruded towards the lifting rod direction, the spring is compressed and deformed, the length of the combination of the lifting rod and the sliding seat is shortened, the lifting rod is naturally separated from the clamping column on the stand column, and then the lifting rod is correspondingly installed on the clamping column with the required height, so that the workers can construct at the proper height, the construction difficulty is reduced, and the fatigue of the workers is relieved.

It should be noted that, when the lifting rod is installed on the clamping columns of the two side columns, the spring in the sliding seat can be in a compressed state or a natural state. Certainly, when the lifter was installed on the joint post of both sides stand, when the spring was in compression state, certain pre-extrusion force had when lifter and both sides stand joint, and the combination stability of lifter and stand is higher, and the security is also higher.

Preferably, at least one side of the door-shaped frame is provided with a ladder stand extending along the direction of the upright post, and the ladder stand is fixed on the outer side of the corresponding upright post.

Like this, through installing the cat ladder on the portal frame, the staff can be very light climb to the frame board through the cat ladder on, use safe and reliable.

As optimization, vertical guardrails are arranged on the door-shaped frame around the frame plate, the guardrails are fixed on the stand columns, and the corresponding positions of the ladder stands are opened.

Like this, because during the operation of being under construction on the scaffold frame of staff, can be higher than two meters apart from ground generally, can restrict staff in working range through the guardrail, improve the security of staff when the operation on the scaffold frame, prevent that the staff accident from falling and causing bodily injury. It should be noted here that the height of the shelf board can be adjusted up and down, but the guardrail is fixedly arranged on the upright post, the up-and-down adjustment height of the shelf board is generally within 1m, and the height of the operator is generally about 1.7m, so even if the height of the shelf board changes, the guardrail can still play a certain protection role for the operator.

Preferably, the bottom edges of the support covers are distributed in a zigzag mode along the length direction of the support covers.

Like this, the base can increase the frictional force with between the ground for the zigzag support cover, and the scaffold frame is more firm. And when the scaffold was set up on earth, be the cockscomb structure through the base, the base of support cover can insert in earth and combine with earth, and the stability of scaffold is better.

Preferably, the door-shaped frame, the crawling ladder and the cross inclined struts are all made of aluminum alloy materials. And a horizontal reinforcing rod is also arranged between the two vertical columns of the door-shaped frame.

Like this, door type frame, cat ladder and alternately bracing are the aluminum alloy, and difficult the rust, life is longer, and compares in the steel pipe, and the dead weight is lighter, is favorable to equipment and removal. Through setting up the stiffener, can strengthen the overall structure stability of scaffold frame.

To sum up, the beneficial effects of the utility model reside in that: replace universal wheel and ground contact through the supporting shroud, greatly increased the area of contact on scaffold frame and ground, improved the stability of scaffold frame, the staff stands the during operation on scaffold frame and is difficult for rocking like this, and the security is higher. Simultaneously can also reply the condition of ground unevenness through this support cover, highly compensate the difference in height of ground unevenness through the self of support cover, let the scaffold frame steadily fix subaerial at the unevenness, the application scope of scaffold frame is wider.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a cross-sectional view of the lifter of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Reference numerals in the drawings of the specification include: the vertical column comprises a vertical column 1, a threaded sleeve 3, a supporting cover 4, universal wheels 5, reinforcing rods 6, a ladder stand 7, a clamping column 8, a lifting rod 9, a frame plate 10, a sliding seat 11, a limiting block 12, springs 13, guardrails 14, clamping holes 15 and cross inclined struts 16.

As shown in fig. 1, 2 and 3, the portal scaffold in this embodiment includes a scaffold plate 10 and a pair of portal frames arranged in front and back, a set of cross braces 16 is connected between two sides of each portal frame, and the scaffold plate 10 is horizontally installed on the portal frames; the door type frame comprises two upright posts 1 and the ejector pin between two upright posts 1, universal wheel 5 is installed to 1 bottom of stand, 1 hypomere of stand has the external screw thread, 1 hypomere of stand has a thread bush 3 in the screw-thread fit of 5 positions department near universal wheel, the fixed support cover 4 that is equipped with an opening down on the thread bush 3, support cover 4 covers and establishes on universal wheel 5 to through thread bush 3 for 1 downward motion ability of stand make support cover 4 and ground contact and make universal wheel 5 unsettled.

This gate-type scaffold is in the use, at first the staff passes through universal wheel 5 with the scaffold and removes to construction position department, through the supporting shroud 4 on the rotatory stand 1, thereby it is rotatory for stand 1 downstream to drive thread bush 3, supporting shroud 4 earlier with ground contact, then continue rotatory thread bush 3 until unsettled with universal wheel 5, the above-mentioned operation is repeated to supporting shroud 4 on the stand 1, until four universal wheels 5 with the scaffold bottom are all unsettled, replace universal wheel 5 through supporting shroud 4 and play the supporting role to whole scaffold, the condition appears rocking when effectively preventing the staff operation on the scaffold. When the scaffold is required to be used on uneven ground, the height difference of uneven ground can be made up through the height of the support cover 4, and the scaffold can be stably installed on uneven ground.

In the scheme, when the scaffold is in a moving state, the support cover 4 is in a suspended state and is in contact with the ground through the universal wheels 5; when needs are under the help of scaffold frame construction operation, replace 5 and the ground contact of universal wheel through the supporting shroud 4, greatly increased the area of contact on scaffold frame and ground, improved the stability of scaffold frame, the staff stands the difficult rocking of during operation on scaffold frame like this, and the security is higher. Simultaneously can also reply the condition of ground unevenness through this support housing 4, compensate the difference in height of ground unevenness through the height of support housing 4, still can let the scaffold frame steadily install subaerial at the unevenness, the application scope of scaffold frame is wider.

In a specific embodiment, two sides of the frame plate 10 are respectively and fixedly connected with corresponding portal frames through a horizontal lifting rod 9, clamping columns 8 are convexly arranged on opposite side surfaces of two upright columns 1 on the same portal frame, and a plurality of clamping columns 8 are arranged at intervals along the height direction of the upright columns 1; a clamping hole 15 matched with the clamping column 8 is formed in one end of the lifting rod 9, a sliding seat 11 is matched with the other end of the lifting rod 9, and a clamping hole 15 matched with the clamping column 8 is formed in one end, away from the lifting rod 9, of the sliding seat 11; a sliding cavity is arranged in the sliding seat 11, the corresponding end of the lifting rod 9 extends into the sliding cavity, and a limiting block 12 which can only slide in the sliding cavity is fixed at the end part; install spring 13 in the slip intracavity, spring 13 both ends are kept away from inner wall and stopper 12 fixed connection of stopper 12 with the slip chamber respectively to make sliding seat 11 can slide along lifter 9 length direction through spring 13 deformation.

Like this, because the mounting height of frame board 10 often is fixed on the conventional scaffold, staff is when using, because the difference of floor height or service environment, often can lead to the staff not to execute the expansion completely because of the scaffold height is improper, and work is comparatively tired, increases staff's intensity of labour. Therefore, the fixing of the lifting rod 9 and the upright post 1 can be realized through the matching of the clamping holes 15 at the two ends of the lifting rod 9 and the clamping posts 8 on the side surfaces of the two upright posts 1; when the height of the scaffold board 10 needs to be changed, only two workers are needed to adjust the lifting rods 9 on the front side and the rear side of the scaffold respectively, the specific adjusting method is that the sliding seat 11 is extruded towards the lifting rods 9, the springs 13 are made to be compressed and deformed, the length of the combination of the lifting rods 9 and the sliding seat 11 is shortened, the lifting rods 9 are naturally separated from the clamping columns 8 on the stand column 1, and then the lifting rods 9 are correspondingly installed on the clamping columns 8 with the required height, so that the workers can construct at the proper height, the construction difficulty is reduced, and the fatigue of the workers is relieved.

It should be noted that, when the lifting rod 9 is installed on the clamping columns 8 of the two side columns 1, the spring 13 in the sliding seat 11 can be in a compressed state or in a natural state. Of course, when the lifting rod 9 is installed on the clamping columns 8 of the upright columns 1 on the two sides, the spring 13 is in a compression state, certain pre-extrusion force is provided when the lifting rod 9 is clamped with the upright columns 1 on the two sides, the combination stability of the lifting rod 9 and the upright columns 1 is higher, and the safety is also higher.

In a specific embodiment, at least one side of the portal frame is provided with a ladder stand 7 extending along the direction of the upright post 1, and the ladder stand 7 is fixed on the outer side of the corresponding upright post 1.

Thus, by installing the ladder stand 7 on the portal frame, the worker can very easily climb to the frame plate 10 through the ladder stand 7, and the use is safe and reliable.

In a specific embodiment, vertical guardrails 14 are arranged on the door-shaped frame around the frame plate 10, the guardrails 14 are fixed on the upright posts 1, and the guardrails 14 are arranged in an open manner at the corresponding positions of the ladder stands 7.

Like this, because during the operation of staff's construction on the scaffold frame, generally can be higher than two meters apart from ground, can restrict the staff at working range through guardrail 14, improve the security of staff when the operation on the scaffold frame, prevent that the staff accident from falling and causing bodily injury. It should be noted here that the height of the shelf board 10 can be adjusted up and down, but the guardrail 14 is fixedly installed on the upright post 1, and the height of the shelf board 10 is generally in the range of 1m, while the height of the operator is generally about 1.7m, so even if the height of the shelf board 10 changes, the guardrail 14 can still protect the operator to a certain extent.

In a specific embodiment, the bottom edges of the support caps 4 are arranged in a zigzag shape along the length direction.

Thus, the support cover 4 with the sawtooth-shaped bottom edge can increase the friction force with the ground, and the scaffold is more stable. And when the scaffold was set up on earth, be the cockscomb structure through the base, the base of support cover can insert in earth and combine with earth, and the stability of scaffold is better.

In the specific implementation process, the door-shaped frame, the ladder stand 7 and the cross inclined strut 16 are all made of aluminum alloy materials. A horizontal reinforcing rod 6 is also arranged between the two upright posts 1 of the portal frame.

Like this, door type frame, cat ladder 7 and alternately bracing 16 are the aluminum alloy, and difficult rust, life is longer, and compares in the steel pipe, and the dead weight is lighter, is favorable to equipment and removal. Through setting up stiffener 6, can strengthen the overall structure stability of scaffold.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A portal scaffold comprises a scaffold board and a pair of portal frames arranged in front and back, wherein a group of cross inclined struts are connected between two sides of each portal frame respectively, and the scaffold board is horizontally arranged on the portal frames; the door type frame comprises ejector pin between two stands and two stands, the universal wheel, its characterized in that are installed to the stand bottom: the lower section of the upright post is provided with external threads, the lower section of the upright post is in threaded fit with a threaded sleeve at a position close to the universal wheel, the threaded sleeve is fixedly provided with a support cover with a downward opening, and the support cover is covered on the universal wheel so as to enable the support cover to be in contact with the ground and suspend the universal wheel by moving the threaded sleeve downwards relative to the upright post.

2. The gate-type scaffold of claim 1, wherein: the two sides of the frame plate are respectively and fixedly connected with the corresponding door-shaped frames through a horizontal lifting rod, clamping columns are convexly arranged on the opposite side surfaces of the two upright columns on the same door-shaped frame, and a plurality of clamping columns are arranged at intervals along the height direction of the upright columns; one end of the lifting rod is provided with a clamping hole matched with the clamping column, the other end of the lifting rod is matched with a sliding seat, and one end of the sliding seat, far away from the lifting rod, is provided with a clamping hole matched with the clamping column; the sliding seat is internally provided with a sliding cavity, the corresponding end of the lifting rod extends into the sliding cavity, and the end part of the lifting rod is fixed with a limiting block which can only slide in the sliding cavity; install the spring in the slip chamber, the inner wall and the stopper fixed connection of stopper are kept away from respectively with the slip chamber in spring both ends to make the sliding seat can slide along lifter length direction through spring deformation.

3. The gate-type scaffold of claim 1, wherein: at least one side of the door-shaped frame is provided with a crawling ladder extending along the direction of the upright post, and the crawling ladder is fixed on the outer side of the corresponding upright post.

4. The gate-type scaffold of claim 3, wherein: vertical guardrails are arranged around the frame sub-plates on the door-shaped frame, the guardrails are fixed on the stand columns, and the corresponding positions of the ladder stands are opened.

5. The gate-type scaffold of claim 1, wherein: the bottom edges of the supporting covers are distributed in a zigzag manner along the length direction.

6. The gate-type scaffold of claim 1, wherein: the door-shaped frame, the crawling ladder and the cross inclined struts are all made of aluminum alloy materials.