CN212954226U

CN212954226U - Locking device of movable lifting workbench

Info

Publication number: CN212954226U
Application number: CN202021922701.8U
Authority: CN
Inventors: 徐兵; 王洪亮; 凌伟; 刘伯帅
Original assignee: Gaoda Heavy Industry Tianjin Co ltd
Current assignee: Gaoda Heavy Industry Tianjin Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-13
Anticipated expiration: 2030-09-04

Abstract

The utility model discloses a locking device of portable elevating platform, including load-bearing platform and extension platform, the extension platform slides the laminating at the load-bearing platform top, its characterized in that: bearing platform top both sides fixed connection slide rail, the fixed a plurality of locking pieces that set up in slide rail top, the locking piece is trapezoidal and the top is provided with the spacing groove, it is located between the slide rail and the fixed slide bar that sets up in top both sides to extend the platform, slide bar lateral wall one end is rotated and is set up the guide pulley, slide bar and slide rail laminating slip and guide pulley are located the slide rail inboard, the fixed bolster that sets up of slide bar lateral wall, the fixed horizontal fixed L type connection piece in fixed bolster top, vertical fixed mounting bracket on the L type connection piece lateral wall, mounting bracket one side sets up the running-board. The beneficial effects of the utility model are that structural design is simple, and the simple installation can realize that the rail goes out the auto-lock of entering the door and fixes, improves the maintenance convenience of extending platform foot switch, can also greatly reduced preparation and maintenance cost.

Description

Locking device of movable lifting workbench

Technical Field

The utility model belongs to the technical field of the jacking equipment protection, especially, relate to a locking device of portable elevating platform.

Background

The movable lifting working platform comprises a chassis, a scissor fork structure and a working platform, and is mainly characterized in that an operator can be conveyed to a high place for operation through a scissor fork extending mechanism, the working platform where the operators are located mainly comprises a bearing platform, an extension platform and a fence, wherein the extension platform can be pushed out horizontally, which not only can increase the working area of the operator on the working platform, but also has certain obstacle-crossing capability and great flexibility of convenient operation, but brings safety risk to operators due to the relative movement between the extension platform and the bearing platform, consequently need fix extension platform and load-bearing platform, the rail is mainly to protect operating personnel, prevents that the builder from falling from the eminence because of unexpected condition, and operating personnel gets into load-bearing platform's mode mainly through the rail door on the rail.

At present, the extension platform and the bearing platform are fixed by inserting a bolt into a hole, the pin shaft is inserted and pulled in and out, the operation environment is easily influenced, a lot of sundries easily enter the slide way of the extension platform through a pin shaft positioning hole, so that the extension platform is blocked and cannot be pushed and pulled, and the pin shaft positioning hole between the extension platform and the main platform is easily deformed and dislocated, so that the locking function of the extension platform is disabled; fence door locking modes are various, and mainly comprise self-suction magnetic locks, plastic spring door locks and the like which are matched with self-closing hinges, if the fence door locking modes are fixed only by magnetic force and pre-tightening force of the self-closing hinges, the fence door locking modes can be easily influenced by external force and opened, and the mode adopting spring reset type plastic check blocks is low in reliability and easy to lose efficacy, so that the platform locking device of the movable lifting working platform is provided

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a locking device of portable elevating platform, especially be fit for deciding to lift platform.

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

the utility model provides a locking device of portable elevating platform, includes load-bearing platform and extension platform, it sets up to extend the platform slip laminating load-bearing platform top, its characterized in that: slide rails are fixedly connected with two sides of the top of the bearing platform, a plurality of locking blocks are fixedly arranged on the top of the slide rails, the cross-sectional structure of each locking block is trapezoidal, a limiting groove is formed in the top of each locking block, the extension platform is positioned between the slide rails, slide bars are fixedly arranged on two sides of the top of each extension platform, guide wheels are rotatably arranged at one ends of side walls of the slide bars, the slide bars are attached to the slide rails and slide, the guide wheels are positioned on the inner sides of the slide rails, fixing supports are fixedly arranged on the side walls of the slide bars, L-shaped connecting pieces are horizontally fixed on the tops of the fixing supports, a mounting frame is vertically fixed on the side walls of the L-shaped connecting pieces, a pedal plate is arranged on one side of the mounting frame, the pedal plate is rotatably connected with the, the L-shaped connecting piece is located below the supporting plate and fixedly connected with a sleeve support, the top of the sleeve support is provided with the supporting plate in a laminating mode, the inner side of the sleeve support is provided with a lock pin in a sliding mode, the top of the lock pin penetrates through the sleeve support and the supporting plate in sequence and is arranged at the top of the supporting plate, the outer side of the lock pin is located at the top of the supporting plate and is provided with an adjusting nut in a rotating mode, the bottom of the lock pin penetrates through the sleeve support and the L-shaped connecting plate in sequence and is arranged at the bottom of the L-shaped connecting plate, a second limiting protrusion is arranged on the lower portion of the side wall of the lock pin, the outer side of the lock pin is located on.

Preferably: the fixing support is fixedly connected with the sliding rod through a bolt, a gasket is arranged at the joint of the adjusting nut and the supporting plate, and a gasket is arranged at the joint of the pedal rotating shaft and the pedal.

So set up, be convenient for installation and overhaul reduce wear simultaneously, extension part life.

Preferably: the fence door is rotatably connected with the fixed fence through a hinge, and the hinge is a self-closing hinge.

So set up, can close the rail door automatically, easy and simple to handle safe and reliable.

Preferably: the top of the door lock hook is provided with a shifting sheet, and a handle is fixedly arranged on the side wall of the fence door.

So set up, be convenient for open the rail lock, the handle is convenient for open rail door and magnet separation.

The utility model has the advantages and positive effects that:

the utility model is convenient to operate and control the extended platform by arranging the pedal plate, is convenient to install and maintain, and can mechanically limit the lock pin by pedaling so as to prevent overload damage; the fence door lock is double-locked through magnetic adsorption and mechanical hooks, and is safer and more reliable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an overall structure diagram of a locking device of a movable type lifting table according to the present invention;

fig. 2 is an enlarged view of a structure at a position a of the locking device of the mobile lifting workbench according to the present invention;

fig. 3 is an overall structure diagram of a locking device of a movable type elevating table according to the present invention;

fig. 4 is an enlarged view of a structure at a position B of the locking device of the mobile lifting workbench according to the present invention;

fig. 5 is an enlarged view of a structure at a position C of the locking device of the mobile lifting workbench according to the present invention;

fig. 6 is an overall structure diagram of a locking device of a movable type elevating table according to the present invention;

fig. 7 is an enlarged view of a structure at position D of a locking device of a mobile lifting table according to the present invention;

fig. 8 is an internal structure view of a sleeve holder of a locking device of a mobile lifting table according to the present invention.

The reference numerals are explained below:

1. a load-bearing platform; 2. an extension platform; 3. a slide rail; 4. a slide bar; 5. a guide wheel; 6. fixing a bracket; 7. a locking block; 8. a limiting groove; 9. a foot pedal; 10. a pedal spindle; 11. a sleeve holder; 12. a lock pin; 13. Adjusting the nut; 14. a spring; 15. an L-shaped connecting sheet; 16. a mounting frame; 17. a support plate; 18. a first limit protrusion; 19. a second limit bulge; 20. fixing the fence; 21. a fence door; 22. a door lock bracket; 23. A door lock hook; 24. a door lock rotating shaft; 25. a door lock catch; 26. a magnet; 27. an omega-shaped bracket; 28. a third limiting bulge; 29. a hinge; 30. a shifting sheet; 31. a handle.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be further explained with reference to the accompanying drawings:

example 1

As shown in figures 1-8, a locking device for a movable lifting workbench comprises a bearing platform 1 and an extension platform 2, wherein the extension platform 2 is arranged on the top of the bearing platform 1 in a sliding fit manner, slide rails 3 are fixedly connected on two sides of the top of the bearing platform 1, a plurality of locking blocks 7 are fixedly arranged on the top of the slide rails 3, the cross-sectional structures of the locking blocks 7 are trapezoidal, a limiting groove 8 is arranged on the top of each locking block 7, the extension platform 2 is arranged between the slide rails 3, slide bars 4 are fixedly arranged on two sides of the top of each extension platform, guide wheels 5 are rotatably arranged at one end of the side walls of the slide bars 4, the slide bars 4 are in fit sliding with the slide rails 3, the guide wheels 5 are arranged on the inner sides of the slide rails 3, a fixed support 6 is fixedly arranged on the side walls of the slide bars 4, an L-shaped connecting plate, a first limiting bulge 18 is arranged below a pedal rotating shaft 10 on a pedal plate 9, one end of the pedal plate 9 is arranged above an L-shaped connecting piece 15 and is fixedly provided with a supporting plate 17, a sleeve support 11 is fixedly connected below the supporting plate 17 on the L-shaped connecting plate, the top of the sleeve support 11 is provided with the supporting plate 17 in an attaching mode, the inner side of the sleeve support 11 is slidably provided with a lock pin 12, the top of the lock pin 12 sequentially penetrates through the sleeve support 11 and the supporting plate 17 and is arranged at the top of the supporting plate 17, the outer side of the lock pin 12 is arranged at the top of the supporting plate 17 and is rotatably provided with an adjusting nut 13, the bottom of the lock pin 12 sequentially penetrates through the sleeve support 11 and the L-shaped connecting piece 15 and is arranged at the bottom of the L-shaped connecting piece 15, a second limiting bulge 19 is arranged on the.

The working process of the embodiment: when the weight-reducing extension platform 2 is pushed out by an operator in work, the support plate 17 is moved upwards through the pedal rotating shaft 10 after the pedal plate 9 is stepped, so that the adjusting nut 13 and the lock pin 12 are driven to move upwards, the spring 14 in the sleeve support 11 is compressed when the lock pin 12 moves upwards, the lower end of the lock pin 12 is separated from the limiting groove 8 at the top of the locking block 7 when the upper limit position is reached, the extension platform 2 can be pushed to move at the moment, then the operator can move feet away from the pedal plate 9, the lock pin 12 is reset under the action of the elastic force of the spring 14, when the extension platform 2 moves to the lower limit position, the lock pin 12 is pushed into the limiting groove 8 to complete the locking of the extension platform 2 due to the fact that the inclined surface is adopted, the spring 14 is pushed upwards and compressed, when the lower end of the lock pin 12 moves to the limiting groove 8 at the top of the locking block 7, the spring 14 is stretched to push the lock pin 12 into, preventing it from moving beyond the limit position; when an operator enters the bearing platform 1 through the fence door 21, the fence door 21 is automatically closed under the action of the self-closing hinge, when the door lock bracket 22 moves to be close to the fixed fence 20, the door lock bracket is attracted by the magnet, so that the door lock hook 23 is contacted with the door lock stop piece and pushes the door lock hook 23 to rotate upwards around the door lock rotating shaft, when the door lock blocking piece passes over the door lock hook 23, the door lock hook 23 automatically falls down under the action of gravity, the fence door 21 is locked, and the magnet adsorbs the fence door 21 to prevent the door lock blocking sheet from swinging back and forth on the inner side of the door lock hook 23, when the operator needs to leave the carrying platform 1, the door lock hook 23 is pulled up through the shifting sheet 30, then the fence door 21 is pulled open by the handle 31, and the third limit bulge 28 at the lower part of the door lock hook 23 and the free end of the omega-shaped bracket 27 jointly limit the door lock hook 23, so that the fence door 21 can not be locked because the fence door is prevented from rotating beyond the limit position.

Preferably: the fixing support 6 is fixedly connected with the sliding rod 4 through a bolt, a gasket is arranged at the joint of the adjusting nut 13 and the supporting plate 17, the gasket is arranged at the joint of the pedal rotating shaft 10 and the pedal plate 9, the installation and maintenance are convenient, meanwhile, the abrasion is reduced, the service life of a component is prolonged, the fence door 21 and the fixing fence 20 are rotatably connected through the hinge 29, the hinge 29 is a self-closing hinge, the fence door can be automatically closed, the operation is simple, convenient, safe and reliable, the shifting piece 30 is arranged at the top of the door lock hook 23, the handle 31 is fixedly arranged on the side wall of the fence door 21, the fence door lock is convenient to open, and the.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a locking device of portable elevating platform, includes load-bearing platform (1) and extension platform (2), it sets up to extend platform (2) slip laminating load-bearing platform (1) top, its characterized in that: the bearing platform is characterized in that sliding rails (3) are fixedly connected to two sides of the top of the bearing platform (1), a plurality of locking blocks (7) are fixedly arranged on the top of each sliding rail (3), the cross section structures of the locking blocks (7) are trapezoidal, a limiting groove (8) is formed in the top of each locking block, the extension platform (2) is located between the sliding rails (3), sliding rods (4) are fixedly arranged on two sides of the top of each sliding rail (3), guide wheels (5) are rotatably arranged at one ends of the side walls of the sliding rods (4), the sliding rods (4) are attached to the sliding rails (3) in a sliding mode, the guide wheels (5) are located on the inner sides of the sliding rails (3), fixing supports (6) are fixedly arranged on the side walls of the sliding rods (4), L-shaped connecting pieces (15) are horizontally fixed to the tops of the fixing supports (6), mounting frames (16) are vertically fixed to the side walls of the L-shaped connecting, a first limiting bulge (18) is arranged on the pedal plate (9) and below the pedal rotating shaft (10), a supporting plate (17) is fixedly arranged at one end of the pedal plate (9) and above the L-shaped connecting plate (15), a sleeve bracket (11) is fixedly connected to the L-shaped connecting plate and below the supporting plate (17), the supporting plate (17) is arranged at the top of the sleeve bracket (11) in a fitting manner, a lock pin (12) is arranged on the inner side of the sleeve bracket (11) in a sliding manner, the top of the lock pin (12) sequentially penetrates through the sleeve bracket (11) and the supporting plate (17) and is arranged at the top of the supporting plate (17), an adjusting nut (13) is rotatably arranged at the top of the supporting plate (17) at the outer side of the lock pin (12), the bottom of the lock pin (12) sequentially penetrates through the sleeve bracket (11) and the L-shaped connecting plate (15) and, a second limiting bulge (19) is arranged on the lower portion of the side wall of the lock pin (12), a spring (14) is sleeved on the outer side of the lock pin (12) and located on the inner side of the sleeve support (11), one end of the spring (14) abuts against the inner side of the sleeve support (11), and the other end of the spring (14) abuts against the second limiting bulge (19).

2. A locking device of a mobile lifting table according to claim 1, characterized in that: a fixed fence (20) is fixedly arranged at the top of the sliding rail (3), a fence door (21) is rotatably arranged at one side of the fixed fence (20), the middle part of one side of the fence door (21) is fixedly connected with a door lock bracket (22), the free end of the door lock bracket (22) is fixedly connected with an omega-shaped bracket (27), a door lock hook (23) is arranged on one side wall of the omega-shaped support (27), the door lock hook (23) is rotationally connected with the omega-shaped support (27) through a door lock rotating shaft, a third limiting bulge (28) is arranged on the door lock hook (23) and below the door lock rotating shaft, the free end of the omega-shaped bracket (27) is positioned below the door lock hook (23) and at one side of the third limiting bulge (28), a door lock catch is fixedly arranged on one side of the door lock hook (23) on the side wall of the fixed fence (20), and a magnet is arranged at the joint of the door lock bracket (22) and the fixed fence (20).

3. A locking device of a mobile lifting table according to claim 1, characterized in that: the fixing support (6) is fixedly connected with the sliding rod (4) through a bolt, a gasket is arranged at the joint of the adjusting nut (13) and the supporting plate (17), and a gasket is arranged at the joint of the pedal rotating shaft (10) and the pedal (9).

4. A locking device of a mobile lifting table according to claim 2, wherein: the fence door (21) is rotatably connected with the fixed fence (20) through a hinge (29), and the hinge (29) is a self-closing hinge.

5. A locking device of a mobile lifting table according to claim 2, wherein: the top of the door lock hook (23) is provided with a shifting sheet (30), and the side wall of the enclosure door (21) is fixedly provided with a handle (31).