CN217633606U - Buffer device for crane - Google Patents

Abstract

A buffer device for a crane comprises a fixed seat, wherein a guide pipe is fixed on the fixed seat, a first compression spring is sleeved in the guide pipe, a support pipe is sleeved at the upper end of the guide pipe, an annular bulge is fixed at the lower end of the support pipe, the bulge is in sliding connection with the inner wall of the guide pipe, a stop block is clamped at the top end of the guide pipe, the lower end of the stop block is clamped between the guide pipe and the support pipe, the guide pipe extends out of the upper end of the stop block, a locking mechanism is arranged between the stop block and the guide pipe, and the stop block is detachably fixed on the guide pipe through the locking mechanism; the top of stay tube can be dismantled and be fixed with and connect the cap, connects the diameter of cap and is greater than the external diameter of stay tube, connects and is equipped with second compression spring between cap and the dog, and second compression spring cover is established on the stay tube. The utility model has simple structure and convenient use.

Description

Buffer device for crane

Technical Field

The utility model belongs to the technical field of the hoist buffering, especially, relate to a buffer for hoist.

Background

The crane is a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range, also called a crane, because the running speed of the crane is very high, in order to protect the crane and a building framework, when the crane collides with an end of a track (or another crane) upright post, the crane must be ensured to be stably stopped without generating violent impact, which is the function of a buffer, the buffer is arranged at the position where a cart or a trolley collides with a blocking body, and the buffers are also arranged between the cranes running on the same track and between two trolleys on the same crane. The patent publication No. CN204938751U, a Chinese utility model patent of a crane buffer device, discloses in the technology in the patent, the structure is complicated and is not convenient for replacing accessories, especially telescopic springs, the telescopic springs need to be replaced after a period of use, so that the requirement of crane buffering can be met, and in the prior art, the elasticity of the telescopic springs and the first rubber shock absorption blocks are on the same axis, and torque is generated between the first rubber shock absorption blocks and the telescopic springs, so that the expansion speed generates larger friction force between the return shaft and the telescopic shaft, and the expansion speed is high, and the return shaft and the support shaft are easy to damage; therefore, in the prior art, the crane buffering device has the technical problems that the structure is complex, the stress is uneven, the accessories are easy to damage and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current hoist buffer structure complicacy, the accessory damages easily and the technical problem of huwen shuji change, a buffer for hoist is provided, which comprises a fixed base, fixing hole has been seted up on the fixing base, can dismantle the fixing on the hoist with the fixing base through fixing bolt, be fixed with the stand pipe on the fixing base, the top of stand pipe is opened, the stand pipe endotheca is equipped with first compression spring, first compression spring's external diameter and the inner wall laminating of stand pipe, the upper pot head of stand pipe is equipped with the stay tube, the stay tube plays the supporting role, the lower extreme of stay tube is fixed with and is annular arch, the inner wall sliding connection of arch and stand pipe, the arch plays the effect of blockking to first compression spring. The top end of the guide pipe is clamped with a stop block (the shape of the stop block is shown in the attached drawing 5 of the specification), the lower end of the stop block is provided with a clamping part matched with the inner wall of the guide pipe, the lower end of the stop block is clamped between the guide pipe and the support pipe, the upper end of the stop block extends out of the guide pipe, a locking mechanism is arranged between the stop block and the guide pipe, the stop block is detachably fixed on the guide pipe through the locking mechanism, the locking mechanism comprises an annular support plate which is axially arranged along the guide pipe, the support plate plays a role of supporting and fixing, the support plate is fixed at the upper end of the guide pipe, a plurality of vertical and uniformly spaced assembly through holes are formed in the support plate, an L-shaped pull rod is arranged in each assembly through hole, the upper end of each pull rod is attached to the top end of the stop block, the lower end of each pull rod is provided with external threads, the assembly through holes extend downwards and are fixed at the bottom end of the support plate through fixing nuts; the lower end of the pull rod extends downwards to a distance from the supporting plate. The top of stay tube can be dismantled and be fixed with and connect the cap, connects the diameter of cap and is greater than the external diameter of stay tube, connects and is equipped with second compression spring between cap and the dog, and second compression spring cover is established on the stay tube.

Preferably, the top end of the stop block is provided with an annular clamping groove; the top of the pull rod is provided with a clamping claw which is correspondingly arranged with the clamping groove, and the clamping claw is clamped in the clamping groove.

Preferably, a guide post is arranged in the guide tube, the bottom end of the guide post is fixedly connected with the fixed seat, the top end of the guide post extends upwards to form the guide tube, and the first compression spring is sleeved on the guide post; the upper end of guide post is established to the stay tube cover.

Preferably, the lower end of the connecting cap is provided with a hexagonal nut, and an internal thread is formed inside the connecting cap; the top of stay tube is equipped with the connector, offer on the connector with connect cap assorted external screw thread, connect cap threaded connection on the connector.

The scheme has the following advantages:

the first compression spring is arranged in the guide pipe, when the support pipe extrudes the first compression spring, the first compression spring exerts a buffer effect on the reverse acting force of the support pipe, and the first compression spring and the first support pipe are coaxially arranged, so that the stress is more uniform; the stop block is fixed at the top end of the guide pipe by the tightening device, so that the guide pipe is convenient to disassemble and the first spring in the guide pipe is replaced; the second compression spring also plays a role in buffering, so that the buffering effect is increased; the setting of guide post all plays the guide effect to first supporting spring and stay tube for the atress is more even.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 isbase:Sub>A schematic sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural view of a support tube and a connecting cap;

fig. 5 is a schematic perspective view of the stopper.

Reference numerals are as follows: 1. a fixed seat; 2. a guide tube; 3. supporting a pipe; 4. a stopper; 5. a locking mechanism; 6. a connecting cap; 7. a guide post; 11. a fixing through hole; 21. a first compression spring; 31. a protrusion; 32. a second compression spring; 33. a connector; 41. a clamping part; 42. a clamping groove; 51. a support plate; 52. a pull rod; 53. fixing a nut; 54. a claw; 61. a hexagonal nut.

Detailed Description

As shown in fig. 1-5, a buffer for hoist, including fixing base 1, fixing hole 11 has been seted up on fixing base 1, can dismantle fixing base 1 through fixing bolt and fix on the hoist, be fixed with stand pipe 2 on fixing base 1, the top of stand pipe 2 is opened, stand pipe 2 endotheca is equipped with first compression spring 21, the external diameter of first compression spring 21 and the inner wall laminating of stand pipe 2, the pot head is equipped with stay tube 3 on stand pipe 2, stay tube 3 plays the supporting role, the lower extreme of stay tube 3 is fixed with and is annular arch 31, arch 31 and the inner wall sliding connection of stand pipe 2, arch 31 plays the effect of blockking to first compression spring 21. A stop block 4 is clamped at the top end of the guide tube 2 (the shape of the stop block 4 is shown in the attached drawing 5 in the specification), a clamping portion 41 matched with the inner wall of the guide tube 2 is arranged at the lower end of the stop block 4, the lower end of the stop block 4 is clamped between the guide tube 2 and the support tube 3, the guide tube 2 extends out of the upper end of the stop block 4, a locking mechanism 5 is arranged between the stop block 4 and the guide tube 2, the stop block 4 is detachably fixed on the guide tube 2 through the locking mechanism 5, the locking mechanism 5 comprises an annular support plate 51 which is axially arranged along the guide tube 2, the support plate 51 plays a role of supporting and fixing, the support plate 51 is fixed at the upper end of the guide tube 2, a plurality of assembling through holes which are vertically and uniformly arranged at intervals are formed in the support plate 51, an L-shaped pull rod 52 is arranged in the assembling through holes, the upper end of the pull rod 52 is attached to the top end of the stop block 4, an external thread is formed at the lower end of the pull rod 52, and extends out of the assembling through holes downwards and is fixed at the bottom end of the support plate 51 through a fixing nut 53; the lower end of the pull rod 52 extends downwardly a distance beyond the support plate 51. The top of stay tube 3 can be dismantled and be fixed with and connect cap 6, connects the diameter of cap 6 to be greater than the external diameter of stay tube 3, connects to be equipped with second compression spring 32 between cap 6 and the dog 4, and second compression spring 32 cover is established on stay tube 3.

Preferably, the top end of the stop block 4 is provided with an annular clamping groove 42; the top end of the pull rod 52 is provided with a claw 54 corresponding to the clamping groove 42, and the claw 54 is clamped in the clamping groove 42.

Preferably, a guide post 7 is arranged in the guide tube 2, the bottom end of the guide post 7 is fixedly connected with the fixed seat 1, the top end of the guide post 7 extends upwards out of the guide tube 2, and the first compression spring 21 is sleeved on the guide post 7; the support tube 3 is sleeved on the upper end of the guide post 7.

Preferably, the lower end of the connecting cap 6 is provided with a hexagonal nut 61, and the inside of the connecting cap 6 is provided with an internal thread; the top of stay tube is equipped with the connector, offers on the connector with connect cap assorted external screw thread, connect cap 6 threaded connection on connector 33.

The using process comprises the following steps:

before the device is used, when the device is assembled, the first compression spring 21 is in a compressed state, namely the first compression spring supports the support tube 3, and in order to facilitate the disassembly of the connecting cap 6, the second compression spring 32 does not generate elastic force with the connecting cap 6. The utility model discloses when using, fix fixing base 1 on the lower end roof beam of hoist running gear department through fixing bolt, stand pipe 2 is located the orbital top of walking and is on a parallel with the setting of walking track, when the hoist along walking pathway movement, the device follows the hoist and removes, when meetting the barrier, connect cap 6 at first contact barrier, connect cap 6 and stay tube 3 to stop this moment, stand pipe 2 continues to follow the hoist and removes, first compression spring 21 in the stand pipe 2 is extruded, first compression spring 21 gives the power of 3 counteractions of stay tube, it continues to remove to block the hoist, after first compression spring 21 is extruded to the certain degree, stand pipe 2 continues to remove, second compression spring 32 is extruded this moment, under second compression spring 32 and the first compression spring 21 combined action, make the hoist stop on the walking track, whole in-process, the hoist slowly stops on the walking track, avoided directly striking on the barrier, play the cushioning effect. When the first compression spring 21 and the second compression spring 32 need to be replaced, the connecting cap 6 and the stopper 4 are removed in order, and the first compression spring 21 and the second compression spring 32 are removed and replaced.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", 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 simplification 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 thus, should not be construed as limiting the present invention.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (6)

1. The utility model provides a buffer for hoist, includes the fixing base, is fixed with the stand pipe on the fixing base, and the stand pipe endotheca is equipped with first compression spring, its characterized in that: the upper end of the guide pipe is sleeved with a support pipe, the lower end of the support pipe is fixedly provided with an annular bulge, the bulge is in sliding connection with the inner wall of the guide pipe, the top end of the guide pipe is clamped with a stop block, the lower end of the stop block is clamped between the guide pipe and the support pipe, the upper end of the stop block extends out of the guide pipe, a locking mechanism is arranged between the stop block and the guide pipe, and the stop block is detachably fixed on the guide pipe through the locking mechanism; the top of stay tube can be dismantled and be fixed with and connect the cap, connects the diameter of cap and is greater than the external diameter of stay tube, connects to be equipped with second compression spring between cap and the dog, and second compression spring overlaps and establishes on the stay tube.

2. A buffer device for a crane according to claim 1, wherein: locking mechanism includes the annular backup pad that is that sets up along the stand pipe axial, and the backup pad is fixed in the upper end of stand pipe, sets up the assembly through-hole that the vertical and even interval of a plurality of set up in the backup pad, is equipped with the pull rod that is the L type in the assembly through-hole, and the upper end and the laminating of dog top of pull rod, the external screw thread has been seted up to the lower extreme of pull rod, and extends the assembly through-hole downwards to fix in the backup pad bottom through fixation nut.

3. A buffer device for a crane according to claim 2, wherein: the top end of the stop block is provided with an annular clamping groove; the top of the pull rod is provided with a clamping claw which is correspondingly arranged with the clamping groove, and the clamping claw is clamped in the clamping groove.

4. A buffer device for a crane according to claim 1, wherein: a guide post is arranged in the guide tube, the bottom end of the guide post is fixedly connected with the fixed seat, the top end of the guide post extends upwards to form the guide tube, and the first compression spring is sleeved on the guide post; the upper end of guide post is established to the stay tube cover.

5. A buffer device for a crane according to claim 1, wherein: the lower end of the connecting cap is provided with a hexagonal nut, and an internal thread is arranged inside the connecting cap; the top of stay tube is equipped with the connector, offer on the connector with connect cap assorted external screw thread, connect cap threaded connection on the connector.

6. A buffer device for crane according to any of claims 1-5, characterized in that: the fixing seat is provided with a fixing through hole.

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