CN108313937B - Mounting mechanism of embedded pulley block - Google Patents
Mounting mechanism of embedded pulley block Download PDFInfo
- Publication number
- CN108313937B CN108313937B CN201810254702.0A CN201810254702A CN108313937B CN 108313937 B CN108313937 B CN 108313937B CN 201810254702 A CN201810254702 A CN 201810254702A CN 108313937 B CN108313937 B CN 108313937B
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- Prior art keywords
- pulley
- shaft
- transmission shaft
- transmission
- threaded
- Prior art date
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 92
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/205—Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
Abstract
The invention discloses a mounting mechanism of a clamping pulley block, which comprises a pulley block device sleeved with a high-pressure rubber pipe and a transmission device for preventing the pulley block device from rotating and blocking; the transmission device comprises a transmission shaft, a chain wheel and a transmission chain, wherein one end of the transmission shaft is fixedly arranged on a vertical plate of the portal; the pulley block device comprises a pulley shaft, one end of the pulley shaft is clamped with the end, away from the vertical plate of the portal, of the transmission shaft, and a pulley is arranged on the pulley shaft. The pulley shaft and the transmission shaft are stepped cylindrical shafts with different forms, stepped threaded through holes and threaded connection holes are respectively formed in the pulley shaft and the transmission shaft, so that the pulley shaft and the transmission shaft can be rapidly positioned according to the structure of the pulley shaft and the transmission shaft, meanwhile, the pulley shaft and the transmission shaft are matched with the clamping block in a clamping manner through the clamping grooves which are correspondingly formed, the parts required for connection are greatly reduced, and the assembly and the disassembly are rapid and convenient.
Description
Technical Field
The invention relates to the technical field of forklifts, in particular to a mounting mechanism of a clamping pulley block.
Background
The forklift mast is generally assembled with various accessories to realize more use functions, and the oil way for supplying the accessories is usually realized through a pipeline system, so that a rubber pipe pulley block is required to be arranged on the mast to realize the connection of hydraulic oil from the multiway valve to the accessories. At present, the installation mechanisms of the rubber tube pulley blocks are various, but all the following defects exist:
1. The welding bracket is adopted mostly, parts are more, and the dimensional accuracy is not easy to control during welding, so that the rubber tube is seriously worn due to Yi Kazu when the pulley rotates;
2. the space required by installation is large, along with the increasingly compact design of the forklift mast, part of forklift mast has almost no space for the installation mechanism, so that the installation and the disassembly of the installation mechanism are inconvenient;
3. after the pulley shaft, the pulley and the like are installed, when the pulley rotates, the pulley shaft and the holes on the bracket rotate relatively, and the phenomenon of mutual abrasion occurs.
Disclosure of Invention
The invention aims to provide a mounting mechanism of a clamping pulley block, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The installation mechanism of the embedded pulley block comprises a pulley block device sleeved with a high-pressure rubber pipe and a transmission device for preventing the pulley block device from rotating and blocking; the transmission device comprises a transmission shaft, a chain wheel and a transmission chain, wherein one end of the transmission shaft is fixedly arranged on a vertical plate of the portal; the pulley block device comprises a pulley shaft, one end of which is clamped with the end part of the transmission shaft, which is far away from the vertical plate of the portal, and a pulley arranged on the pulley shaft; the diameter of the transmission shaft is equal to that of the pulley shaft.
As a further scheme of the invention: the pulley shaft is a stepped cylindrical shaft with the diameter sequentially increased from the clamping end of the pulley shaft, a stepped threaded through hole is formed in the pulley shaft, and two flat arc clamping grooves are symmetrically formed in the small-diameter end of the pulley shaft.
As a further scheme of the invention: the large diameter end of the pulley shaft is fixedly welded with a guard plate and a circular cutting sleeve for preventing the high-pressure rubber tube or the chain from running out.
As a further scheme of the invention: the end parts of the transmission shaft, which are clamped with the pulley shafts, are symmetrically and fixedly provided with flat arc clamping blocks which are correspondingly clamped with the two flat arc clamping grooves.
As a further scheme of the invention: the transmission shaft is a stepped cylindrical shaft with thick middle and thin two sides, a threaded connection hole concentric with the threaded through hole is formed in the transmission shaft, and an annular check ring groove for installing a check ring is formed in the outer side face of the installation sprocket.
As a further scheme of the invention: the pulley shaft is fixedly connected with the transmission shaft through a connecting piece screwed in the threaded through hole and the threaded connecting hole; the connecting piece comprises a connecting screw and a gasket, wherein the gasket is positioned between one side surface of the stepped threaded through hole and one side surface of the head of the connecting screw.
As a further scheme of the invention: the guard plate is of an L-shaped structure, the inner side surface of a horizontal plate of the guard plate is positioned at the end parts of the pulley block device and the transmission device, and the end part of the vertical plate is of a semicircular arc structure.
Compared with the prior art, the invention has the beneficial effects that:
1. The pulley shaft and the transmission shaft are stepped cylindrical shafts with different forms, and stepped threaded through holes and threaded connecting holes are respectively formed in the pulley shaft and the transmission shaft, so that the pulley shaft and the transmission shaft can be rapidly positioned according to the structure of the pulley shaft and the transmission shaft, and meanwhile, the pulley shaft and the transmission shaft are in clamping fit with the clamping blocks through the clamping grooves correspondingly arranged, so that parts required for connection are greatly reduced, and the pulley shaft and the transmission shaft are rapid and convenient to install and detach;
2. The transmission shaft with the same diameter is in clamping fit with the pulley shaft and forms a cylindrical surface with a smooth surface at the clamping position, so that the flexibility of the rotation of the pulley is ensured, the axial position of the pulley is convenient to freely adjust, the high-pressure rubber tube is ensured to be positioned in the middle position of a pulley groove on the pulley, and the smoothness of the movement of the high-pressure rubber tube is ensured;
3. The flat arc clamping grooves and the flat arc clamping blocks are symmetrically arranged at the end parts of the transmission shaft and the pulley shaft respectively, so that the clamping stability of the pulley shaft and the pulley shaft is ensured, the clamping type matched transmission shaft prevents the pulley shaft from rotating in the working process, the connecting piece for connecting the transmission shaft and the pulley shaft is free from the radial force, only the axial fixing effect is realized, and the stress condition of the connecting piece is greatly improved;
4. The connecting piece is used for connecting the pulley shaft and the transmission shaft, the head part and the gasket of the connecting screw can be hidden in the stepped threaded through hole formed in the pulley shaft, and the occupied space of the connecting piece is reduced;
5. The two sides of the transmission shaft are axially positioned through the step surface close to one side of the vertical plate of the portal and the retainer ring arranged in the annular retainer ring groove respectively, so that the transmission shaft is quickly and conveniently installed and disassembled, the convenience of installing and disassembling the pulley block is further ensured, and the use requirements of people are met;
6. The pulley shaft is fixedly welded with the guard plate and the annular cutting sleeve, the welding is firm, the guard plate can effectively prevent the high-pressure rubber tube from running out of the pulley and the chain from running out of the chain wheel, and the pulley has a good protective effect.
Drawings
Fig. 1 is a top view of the present invention mounted on a forklift mast.
Fig. 2 is an enlarged view of a portion of fig. 1B.
Fig. 3 is a sectional view A-A of fig. 1.
Fig. 4 is an enlarged view of a portion of fig. 3C.
Fig. 5 is a perspective view of the present invention.
In the figure: 1-portal riser, 2-transmission shaft, 3-sprocket, 4-chain, 5-pulley, 6-high-pressure rubber tube, 7-pulley shaft, 8-backplate, 9-connecting screw, 10-packing ring, 11-retaining ring, 12-cutting ferrule, 13-draw-in groove, 14-fixture block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the invention, one end of the transmission shaft 2 of the transmission device is clamped with one end of the pulley shaft 7 of the pulley block device, a stepped threaded connection hole is formed in the transmission shaft 2, a stepped threaded through hole is formed in the pulley shaft 7, the pulley shaft 7 and the transmission shaft 2 are fixedly connected through a connecting piece screwed in the threaded connection hole and the threaded through hole, so that the pulley shaft 7 and the transmission shaft 2 which are designed to have the same diameter form a cylindrical structure with smooth surfaces at the clamped connection position, the pulley shaft 7 is provided with the pulley 5, the pulley 5 can be favorably and freely adjusted in the left-right direction at the axial position of the pulley shaft 7 and the clamped position of the pulley shaft 7 and the transmission shaft 2, the high-pressure rubber tube 6 is ensured to be positioned in the middle position of the pulley 5 groove formed in the upper part of the pulley 5 at any time, the movement smoothness of the high-pressure rubber tube 6 is ensured, the abrasion of the high-pressure rubber tube 6 is reduced or avoided, and the service life of the high-pressure rubber tube 6 is prolonged.
Referring to fig. 1-5, an installation mechanism of a clamping pulley block comprises a pulley block device sleeved with a high-pressure rubber tube 6 and a transmission device for preventing the pulley block device from rotating and blocking, wherein the transmission device comprises a transmission shaft 2 with one end fixedly installed on a vertical plate 1 of a portal, a chain wheel 3 installed on the transmission shaft 2 and a transmission chain 4 sleeved on the transmission shaft 2, the transmission shaft 2 is a stepped cylindrical shaft with thick middle and thin two sides, a threaded connection hole concentric with a threaded through hole is formed in the transmission shaft 2, an annular check ring groove for installing a check ring 11 is formed in the outer side surface of the installation chain wheel 3, and when the installation mechanism is installed, the right side of the transmission shaft 2 is positioned through a step surface close to one side of the vertical plate 1 of the portal, the left side of the transmission shaft 2 is positioned through the check ring 11 installed in the annular check ring groove, so that the installation and the disassembly of the transmission shaft 2 are fast and convenient; in addition, the transmission device can also adopt a transmission mode of belt pulleys, belts and the like, but the transmission shaft 2 and the pulley shaft 7 of the transmission device are still designed to be in clamping fit with the clamping groove 13 and the clamping block 14 and then are fixedly connected through a connecting piece hidden in the stepped threaded through hole, and similar effects can be achieved.
The pulley block device comprises a pulley shaft 7 with one end clamped with the end part of the transmission shaft 2 far away from the portal riser 1 and a pulley 5 arranged on the pulley shaft 7, wherein the pulley shaft 7 is a stepped cylindrical shaft with the diameter sequentially increased from the clamping end of the transmission shaft 2, a stepped threaded through hole is formed in the pulley shaft 7, two flat arc clamping grooves 13 are symmetrically formed in the small-diameter end, flat arc clamping blocks 14 which are correspondingly clamped with the two flat arc clamping grooves 13 are symmetrically and fixedly arranged at the clamping end part of the transmission shaft 2 and the pulley shaft 7, meanwhile, the diameter of the transmission shaft 2 is equal to the diameter of the pulley shaft 7, the flat arc clamping blocks 14 arranged at one end of the transmission shaft 2 are in one-to-one correspondence with the flat arc clamping grooves 13 formed at one end of the pulley shaft 7 during installation, the clamping of the transmission shaft 2 and the pulley shaft 7 is realized, the required parts such as welding connection are reduced, and the problems of difficult control of dimensional precision and the like are eliminated, the transmission shaft 2 and the pulley shaft 7 are clamped with the clamping block 14 and the like through the clamping groove 13, so that the pulley shaft 7 is effectively prevented from rotating in the working process, meanwhile, a stepped threaded through hole is formed in the pulley shaft 7, a threaded connecting hole concentric with the threaded through hole is formed in the transmission shaft 2, the threaded connecting hole is also a stepped connecting hole, when the transmission shaft 2 is clamped with the pulley shaft 7, the minimum diameter section of the pulley shaft 7 is inserted into the large diameter section of the threaded connecting hole in the transmission shaft 2, the inner side surface of the large diameter section of the threaded connecting hole is attached to the outer side surface of the minimum diameter section of the pulley shaft 7, the pulley shaft 7 is fixedly connected with the transmission shaft 2 through a connecting piece screwed in the threaded through hole and the threaded connecting hole, the connecting piece comprises a connecting screw 9 and a gasket 10, the gasket 10 is positioned between one side surface of the stepped threaded through hole and one side surface of the head of the connecting screw 9, the connecting bolt is screwed into the threaded through hole and the threaded connecting hole in sequence from one end far away from the transmission shaft 2, the heads of the gasket 10 and the connecting screw 9 are arranged in the stepped threaded through hole, so that the heads of the gasket 10 and the connecting screw 9 are hidden in the threaded through hole, the occupied space of the connecting screw 9 and the gasket 10 is reduced, the problem that the mounting space is small or even no mounting space is caused by compact structure of the forklift portal is solved, the transmission shaft 2 and the pulley shaft 7 are clamped and fixedly connected through the connecting piece hidden in the pulley shaft 7, the convenience of mounting and dismounting is improved, and the transmission shaft 2 and the pulley shaft 7 are clamped and then are fixed through the connecting piece; the transmission shaft 2 and the pulley shaft 7 are clamped, so that the pulley shaft 7 is prevented from rotating in the working process, the connecting screw 9 only plays an axial fixing role and does not need to be subjected to radial force, the stress condition of the connecting screw 9 is greatly improved, and the service lives of the connecting piece, the transmission device and the pulley block device are prolonged.
The large diameter end of pulley shaft 7 is fixed welding in proper order has backplate 8 and annular cutting ferrule 12 that are used for preventing high-pressure rubber tube 6 or chain 4 to run out, fixed welding backplate 8 and cutting ferrule 12 form integral type structure on the pulley shaft 7, the welding is firm, backplate 8 is L shape structure, the horizontal plate medial surface of backplate 8 is located pulley assembly device and transmission's tip, vertical plate's tip is semicircle arc structure, backplate 8 can prevent effectively that high-pressure rubber tube 6 from running out from pulley 5, also can avoid effectively that chain 4 from running out from sprocket 3, work to high-pressure rubber tube 6, chain 4 and whole transmission, pulley assembly device has played good guard action, backplate 8 simple structure workable and backplate 8 are rationally distributed in whole transmission, pulley assembly device, the protection is reliable, have good practicality, do benefit to popularization and application.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a clamping-embedding type pulley block's installation mechanism which characterized in that: comprises a pulley block device sleeved with a high-pressure rubber tube (6) and a transmission device used for preventing the pulley block device from rotating and blocking; the transmission device comprises a transmission shaft (2) with one end fixedly arranged on a portal riser (1), a chain wheel (3) arranged on the transmission shaft (2) and a transmission chain (4) sleeved on the transmission shaft (2); the pulley block device comprises a pulley shaft (7) with one end clamped with the end part of the transmission shaft (2) far away from the portal riser (1) and a pulley (5) arranged on the pulley shaft (7); the diameter of the transmission shaft (2) is equal to the diameter of the pulley shaft (7);
Stepped threaded connecting holes are formed in the transmission shaft (2), stepped threaded through holes are formed in the pulley shaft (7), and the pulley shaft (7) and the transmission shaft (2) are fixedly connected through connecting pieces screwed in the threaded connecting holes and the threaded through holes, so that the pulley shaft (7) and the transmission shaft (2) which are designed in the same diameter form a cylindrical structure with smooth surfaces at the joint of the pulley shaft and the transmission shaft.
2. The mounting mechanism for a snap-in pulley block of claim 1, wherein: the pulley shaft (7) is a stepped cylindrical shaft with the diameter sequentially increased from the clamping end of the pulley shaft (2), a stepped threaded through hole is formed in the pulley shaft (7), and two flat arc clamping grooves (13) are symmetrically formed in the small-diameter end of the pulley shaft.
3. The mounting mechanism for a snap-in pulley block of claim 2, wherein: the large diameter end of the pulley shaft (7) is fixedly welded with a guard plate (8) and a circular cutting sleeve (12) which are used for preventing the high-pressure rubber tube (6) or the chain (4) from running out.
4. The mounting mechanism for a snap-in pulley block of claim 1, wherein: flat arc clamping blocks (14) which are correspondingly clamped with the two flat arc clamping grooves (13) are symmetrically and fixedly arranged at the end parts of the transmission shaft (2) clamped with the pulley shafts (7).
5. The mounting mechanism for a snap-in pulley block of claim 1, wherein: the transmission shaft (2) is a stepped cylindrical shaft with thick middle and thin two sides, a threaded connection hole concentric with the threaded through hole is formed in the transmission shaft (2), and an annular check ring groove for installing the check ring (11) is formed in the outer side face of the installation chain wheel (3).
6. The mounting mechanism for a snap-in pulley block of claim 1, wherein: the connecting piece comprises a connecting screw (9) and a gasket (10), wherein the gasket (10) is positioned between one side surface of the stepped threaded through hole and one side surface of the head of the connecting screw (9).
7. A mounting mechanism for a snap-in pulley block as claimed in claim 3 wherein: the guard plate (8) is of an L-shaped structure, the inner side surface of a horizontal plate of the guard plate (8) is positioned at the end parts of the pulley block device and the transmission device, and the end parts of the vertical plates are of a semicircular arc-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810254702.0A CN108313937B (en) | 2018-03-26 | 2018-03-26 | Mounting mechanism of embedded pulley block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810254702.0A CN108313937B (en) | 2018-03-26 | 2018-03-26 | Mounting mechanism of embedded pulley block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108313937A CN108313937A (en) | 2018-07-24 |
| CN108313937B true CN108313937B (en) | 2024-05-28 |
Family
ID=62899116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810254702.0A Active CN108313937B (en) | 2018-03-26 | 2018-03-26 | Mounting mechanism of embedded pulley block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108313937B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1906382A (en) * | 2004-11-09 | 2007-01-31 | 玛勒阀门有限公司 | Support between two coaxial camshafts especially for motor vehicles |
| CN2903006Y (en) * | 2006-02-09 | 2007-05-23 | 安徽合力股份有限公司 | Lifting apparatus for 25 ton empty container stacking machine with hidden type sebific duct pulley block |
| CN101479147A (en) * | 2006-05-17 | 2009-07-08 | Zf转向***Nacam有限公司 | System for locking a first shaft with respect to a second shaft eliminating clearances between said shafts |
| CN202594724U (en) * | 2012-02-29 | 2012-12-12 | 台励福机器设备(青岛)有限公司 | Three-section wide-view mast assembly device for forklift |
| CN103407940A (en) * | 2013-08-22 | 2013-11-27 | 安徽合力股份有限公司 | Wide-view forklift two-stage all-free portal frame |
| CN208071230U (en) * | 2018-03-26 | 2018-11-09 | 安徽合力股份有限公司 | A kind of installing mechanism of inlaid type pulley blocks |
-
2018
- 2018-03-26 CN CN201810254702.0A patent/CN108313937B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1906382A (en) * | 2004-11-09 | 2007-01-31 | 玛勒阀门有限公司 | Support between two coaxial camshafts especially for motor vehicles |
| CN2903006Y (en) * | 2006-02-09 | 2007-05-23 | 安徽合力股份有限公司 | Lifting apparatus for 25 ton empty container stacking machine with hidden type sebific duct pulley block |
| CN101479147A (en) * | 2006-05-17 | 2009-07-08 | Zf转向***Nacam有限公司 | System for locking a first shaft with respect to a second shaft eliminating clearances between said shafts |
| CN202594724U (en) * | 2012-02-29 | 2012-12-12 | 台励福机器设备(青岛)有限公司 | Three-section wide-view mast assembly device for forklift |
| CN103407940A (en) * | 2013-08-22 | 2013-11-27 | 安徽合力股份有限公司 | Wide-view forklift two-stage all-free portal frame |
| CN208071230U (en) * | 2018-03-26 | 2018-11-09 | 安徽合力股份有限公司 | A kind of installing mechanism of inlaid type pulley blocks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108313937A (en) | 2018-07-24 |
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