CN219929432U - Electric self-buffering spring rail clamping device - Google Patents

Abstract

The utility model discloses an electric self-buffering spring rail clamping device which comprises a frame, a driving device, a spring, a clamp assembly and a mechanical limiting assembly, wherein the clamp assembly is used for executing opening or closing actions, the clamp assembly comprises a clamping support and a pair of clamp arms hinged to the clamping support, each clamp arm is hinged with a spring upper pressing seat through a double-hole lever, the spring is arranged between the spring upper pressing seat and the frame, a lifting rod capable of moving up and down is arranged between the driving device and the spring upper pressing seat, the top of the spring upper pressing seat is fixedly provided with a connecting plate, the connecting plate is provided with a vertical long hole, the bottom of the lifting rod is fixedly provided with a pressure spring connecting rod crossing the vertical long hole, and the end part of the pressure spring connecting rod is fixedly provided with a limiting pressing shaft matched with the mechanical limiting assembly. The utility model can solve the problem of motor burnout caused by the fact that the limit critical point of the existing rail clamping device cannot be captured correctly.

Description

Electric self-buffering spring rail clamping device

Technical Field

The utility model relates to the technical field of rail clamping devices of cranes, in particular to an electric self-buffering spring rail clamping device.

Background

The rail clamping device of the crane is a crane safety device for preventing the outdoor crane from sliding along the rail under the action of strong wind, and usually clamps connected with the bottom structure of the crane are used for clamping two side surfaces of the rail head to prevent sliding.

Common types of rail clamping devices include a hydraulic rail clamping device, a manual rail clamping device and an electric rail clamping device, wherein the electric rail clamping device has the advantages of low cost, small pollution, convenience in use and the like, and has good application effect, such as a screw rod type electric rail clamping device disclosed in Chinese patent publication No. CN 204529126U.

However, the existing electric rail clamping device still has the defects that, for example, when a rail is locked by a clamp of the electric rail clamping device, a motor in the electric rail clamping device is required to stop rotating along with the rail, but because a limiting element is usually manually preset before leaving a factory, on one hand, the defect that a limiting critical point cannot be accurately determined can be generated by manual adjustment, on the other hand, the rail condition in the actual use environment cannot be ensured to be uniform, after the rail is locked by the clamp, the limiting critical point cannot be correctly captured, the motor can continue to rotate, so that the phenomenon that the motor burns out or a screw rod assembly is damaged can occur, and the use of the rail clamping device is very influenced.

Disclosure of Invention

The utility model aims to provide an electric self-buffering spring rail clamping device which is used for solving the problem that an existing rail clamping device cannot be accurately captured due to limiting critical points, so that a motor is burnt out.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides an electronic self-buffering spring rail clamping device, includes frame, drive arrangement, spring, is used for carrying out clamp assembly and the mechanical spacing subassembly of opening or closing the floodgate action, and clamp assembly includes centre gripping support and a pair of clamp arm of articulated on the centre gripping support, and every clamp arm articulates through a diplopore lever respectively has the spring to go up to press the seat, the spring is installed and is pressed between seat and the frame on the spring, is provided with the lift bar that can reciprocate on drive arrangement and the spring on pressing the seat, and the top of pressing the seat on the spring is fixed with the connecting plate, has seted up vertical slot hole on the connecting plate, and the bottom of lift bar is fixed with the pressure spring connecting rod that crosses vertical slot hole, the tip of pressure spring connecting rod is fixed with the spacing pressure axle with mechanical spacing subassembly matched with.

Optionally, drive arrangement includes motor and worm gear transmission pair, is fixed with the worm wheel mount pad in the frame, and the output shaft of motor transversely sets up and is connected with worm transmission, and the worm wheel rotates to be connected in the worm wheel mount pad, the lift bar is screw structure, lift bar upper portion threaded connection at the worm wheel inner circle.

Optionally, a hand wheel is mounted at the end of the worm remote from the motor.

Optionally, the frame includes bottom plate and roof, is fixed with deflector and triangle extension board between bottom plate and the roof, has seted up on the deflector with pressure spring connecting rod complex first guiding hole, has seted up on the triangle extension board with spacing pressure shaft complex second guiding hole, mechanical limit subassembly is including closing floodgate limit switch and opening floodgate limit switch, closes floodgate limit switch and opening floodgate limit switch and install on the triangle extension board.

Optionally, a guide wheel box is fixed at the bottom of the frame, and a guide wheel matched with the track is rotationally connected to the guide wheel box.

Optionally, the clamp arm is articulated with the clamping support through flat axle, and the both ends that flat axle stretches out the clamping support are located the bottom plate top, and one side towards the bottom plate is the supporting plane.

Optionally, a spring lower seat is also fixed at the bottom of the frame, and the spring is installed between the spring upper pressing seat and the spring lower seat.

Optionally, the middle part of the spring upper pressing seat is penetrated with a T-shaped rod downwards, the lower part of the T-shaped rod is provided with a threaded hole, and the middle part of the spring lower seat is provided with a mounting process hole.

Optionally, a protection fence is provided on the periphery of the rack, the protection fence including a plurality of side panels.

Optionally, a spacer bush is sleeved on the pressure spring connecting rod and is positioned between the connecting plate and the guide plate.

By adopting the technical scheme, the utility model has the following advantages:

according to the utility model, the lifting rod, the pressure spring connecting rod and the vertical long hole are arranged, so that self-buffering before stopping of the motor is realized in a brake closing action, the problems of motor burnout and the like caused by incapability of correctly capturing limit critical points are effectively solved, and in addition, the lifting rod, the pressure spring connecting rod and the limit pressing shaft are ensured to stably move up and down through the design of the guide wheels, the guide holes and the spacer bush, so that the clamp arm is prevented from deviating and being incapable of clamping the track.

Drawings

FIG. 1 is a schematic diagram of one embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 with the protective enclosure and rain cover removed;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a partial structural cross-sectional view of one embodiment of the present utility model;

fig. 5 is a partial perspective view of one embodiment of the present utility model.

Reference numerals: 1. the spring, 2, the clamping support, 3, the clamp arm, 4, the double-hole lever, 5, the spring upper pressing seat, 6, the lifting rod, 7, the connecting plate, 8, a vertical long hole, 9, a pressure spring connecting rod, 10, a limiting pressing shaft, 11, a motor, 12, a worm wheel mounting seat, 13 and a hand wheel;

14. the bottom plate 15, the top plate 16, the guide plate 17, the triangular support plate 18, the first guide hole 19 and the second guide hole;

20. the brake-closing limit switch, 21, the brake-opening limit switch, 22, the guide wheel box, 23, the guide wheel, 24, the flat shaft, 25, the spring lower seat, 26, the T-shaped rod, 27, the threaded hole, 28, the mounting process hole, 29, the protection fence, 30 and the spacer bush.

Detailed Description

In order to make the technical objects, technical solutions and advantageous effects of the present utility model more clear, the technical solutions of the present utility model are further described below with reference to fig. 1 to 5 and specific embodiments.

Examples:

the utility model provides an electronic self-buffering spring rail clamp, includes frame, drive arrangement, spring 1, is used for carrying out clamp assembly and the mechanical spacing subassembly of opening or closing the floodgate action, and clamp assembly includes clamping support 2 and a pair of clamp arm 3 of articulated on clamping support 2, and every clamp arm 3 articulates through a diplopore lever 4 respectively has spring to go up to press the seat 5, spring 1 installs and presses between seat 5 and the frame on the spring, is provided with the lift bar 6 that can reciprocate on drive arrangement and the spring between pressing the seat 5 on the spring, and the top of pressing the seat 5 on the spring is fixed with connecting plate 7, has seted up vertical slot hole 8 on the connecting plate 7, and the bottom of lift bar 6 is fixed with and transversely the pressure spring connecting rod 9 of vertical slot hole 8, the tip of pressure spring connecting rod 9 is fixed with the spacing pressure axle 10 with mechanical spacing subassembly matched with.

The working principle of the embodiment is as follows: when the clamping force of the rail clamping device on the rail is provided by the spring 1 through the double-hole lever 4 and the clamp arm 3 during operation, the driving device only drives the lifting rod 6 to move up and down to realize opening and closing actions, and the clamping force is not provided.

When the brake is opened, the driving device enables the lifting rod 6 to move downwards, the connecting plate 7 drives the spring upper pressing seat 5 to press down the spring 1, and meanwhile, the clamp arm 3 can be opened.

When the brake is closed, the motor 11 in the driving device acts, so that the lifting rod 6 moves upwards, the spring 1 is not compressed any more, and the upward elastic force is released, so that the clamp arm 3 clamps the track (when the clamp is clamped, the connecting rod where the vertical long hole 8 is located does not move any more), in the process, the critical point of the track is probably not captured by the mechanical limiting component, the motor 11 fails to timely receive a stop signal, the motor 11 still rotates, the vertical long hole 8 can enable the pressure spring connecting rod 9 to continue upwards, the self-buffering effect is achieved, the lifting rod 6 is not hindered from continuing to upwards under the driving of the motor 11, and the motor 11 is not burnt out.

Further, as one embodiment of the present utility model, the driving device includes a motor 11 and a worm gear pair, a worm gear mounting seat 12 is fixed on the frame, an output shaft of the motor 11 is transversely disposed and connected with the worm gear, the worm gear is rotatably connected in the worm gear mounting seat 12, the lifting rod 6 is in a screw structure, and an upper portion of the lifting rod 6 is in threaded connection with an inner ring of the worm gear.

The installation of the worm gear transmission pair is the prior art, and is not repeated, and when the motor 11 acts, the lifting rod 6 can move upwards or downwards under the drive of the worm gear transmission pair.

The driving device of the embodiment has the advantages of compact structure, low cost, few transmission parts and low failure rate.

In another embodiment, a rain cover is arranged on the outer side of the driving device to provide shielding for the driving device.

Further, as one embodiment of the present utility model, a hand wheel 13 is mounted at the end of the worm remote from the motor 11, so as to facilitate manual operation under specific working conditions (such as power failure).

Further, as one embodiment of the present utility model, the frame includes a bottom plate 14 and a top plate 15, the driving device is mounted on the top plate 15, a guide plate 16 and a triangular support plate 17 are fixed between the bottom plate 14 and the top plate 15, a first guide hole 18 matched with the pressure spring connecting rod 9 is formed on the guide plate 16, a second guide hole 19 matched with the limit pressing shaft 10 is formed on the triangular support plate 17, the mechanical limit assembly includes a gate closing limit switch 20 and a gate opening limit switch 21, and the gate closing limit switch 20 and the gate opening limit switch 21 are mounted on the triangular support plate 17.

The first guide hole 18 and the second guide hole 19 play a guiding role in the up-and-down movement process of the compression spring connecting rod 9 and the limiting compression shaft 10.

Further, as one embodiment of the utility model, the bottom of the frame is fixed with the guide wheel box 22, the guide wheel box 22 is rotationally connected with the guide wheel 23 matched with the track, the guide wheel 23 walks along the track, and the clamp arms 3 of the electric self-buffering spring 1 rail clamp can be assisted to be always positioned at two sides of the track, so that the condition that the clamp arms 3 deviate and cannot clamp the track in the braking process is avoided.

In the embodiment, the guide wheels 23 can be arranged on two sides of the frame, or only one guide wheel can be arranged on one side, and the two guide wheels 23 are arranged, so that the guide effect is better; a guide wheel 23 is provided, which is relatively low in cost.

Further, as one embodiment of the present utility model, the clamp arm 3 is hinged to the clamping support 2 through a flat shaft 24, the bottom plate 14 is provided with a space for opening the clamp arm 3, two ends of the flat shaft 24 extending out of the clamping support 2 are located above the bottom plate 14, and a supporting plane is located on one side of the flat shaft facing the bottom plate 14, and when the clamp is closed, the flat shaft contacts with the plane of the bottom plate 14 to provide stable supporting force for the clamp assembly.

Further, as one embodiment of the present utility model, a spring lower seat 25 is also fixed at the bottom of the frame, and the spring 1 is installed between the spring upper pressing seat 5 and the spring lower seat 25.

Further, as one embodiment of the present utility model, the middle part of the upper spring pressing seat 5 is penetrated with a T-shaped rod 26 downwards, the lower part of the T-shaped rod 26 is provided with a threaded hole 27, the middle part of the lower spring seat 25 is provided with a mounting process hole 28, a bolt capable of being matched with the threaded hole 27 of the T-shaped rod 26 can be inserted from the lower part of the lower spring seat 25 through the mounting process hole 28, so that the spring 1 is pre-compressed, and then the pressure spring connecting rod 9 and the lifting rod 6 are connected.

Further, as one embodiment of the present utility model, the frame is provided with a protective enclosure 29 at the outer periphery thereof, and the protective enclosure 29 includes a plurality of side panels.

In this embodiment, the bottom of the protection enclosure 29 is fixedly connected with the chassis base plate 14, and one end of the protection enclosure 29 is a flange plate for connecting with an external device.

Further, as one embodiment of the present utility model, the compression spring connecting rod 9 is sleeved with the spacer sleeve 30 and is located between the connecting plate 7 and the guide plate 16, so that the compression spring connecting rod 9 can be further prevented from being skewed in the up-and-down movement process.

The above embodiments are not limited in any way by the shape, materials, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the protection scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides an electronic self-buffering spring rail clamp, includes frame, drive arrangement, spring, is used for carrying out clamp assembly and the spacing subassembly of machinery of brake opening or brake closing action, and clamp assembly includes clamping support and a pair of clamp arm of articulating on the clamping support, and every clamp arm articulates through a diplopore lever respectively has the spring to go up to press the seat, the spring is installed and is pressed between seat and the frame on the spring, its characterized in that: a lifting rod capable of moving up and down is arranged between the driving device and the spring upper pressing seat, a connecting plate is fixed at the top of the spring upper pressing seat, a vertical long hole is formed in the connecting plate, a pressure spring connecting rod crossing the vertical long hole is fixed at the bottom of the lifting rod, and a limiting pressing shaft matched with the mechanical limiting assembly is fixed at the end part of the pressure spring connecting rod.

2. An electric self-buffering spring rail clamp as claimed in claim 1, wherein: the driving device comprises a motor and a worm gear pair, a worm gear mounting seat is fixed on the frame, an output shaft of the motor is transversely arranged and connected with the worm gear, the worm gear is rotationally connected in the worm gear mounting seat, the lifting rod is of a screw rod structure, and the upper portion of the lifting rod is in threaded connection with the worm gear inner ring.

3. An electric self-buffering spring rail clamp as claimed in claim 2, wherein: and a hand wheel is arranged at one end of the worm far away from the motor.

4. An electric self-buffering spring rail clamp as claimed in claim 1, wherein: the frame includes bottom plate and roof, is fixed with deflector and triangle extension board between bottom plate and the roof, has seted up on the deflector with pressure spring connecting rod complex first guiding hole, has seted up on the triangle extension board with spacing pressure shaft complex second guiding hole, mechanical limit subassembly is including closing floodgate limit switch and switch-off limit switch, closes floodgate limit switch and switch-off limit switch and installs on the triangle extension board.

5. An electric self-buffering spring rail clamp as claimed in claim 1, wherein: the bottom of the frame is fixed with a guide wheel box, and the guide wheel box is rotationally connected with a guide wheel matched with the track.

6. An electric self-buffering spring rail clamp as claimed in claim 4, wherein: the clamp arm is hinged with the clamping support through a flat shaft, two ends of the flat shaft extending out of the clamping support are located above the bottom plate, and one side, facing the bottom plate, of the flat shaft is a supporting plane.

7. An electric self-buffering spring rail clamp as claimed in claim 1, wherein: the bottom of the frame is also fixed with a spring lower seat, and the spring is arranged between the spring upper pressing seat and the spring lower seat.

8. The electric self-buffering spring rail clamp of claim 7, wherein: t-shaped rods downwards penetrate through the middle parts of the upper spring pressing seats, threaded holes are formed in the lower parts of the T-shaped rods, and mounting process holes are formed in the middle parts of the lower spring pressing seats.

9. An electric self-buffering spring rail clamp as claimed in claim 1, wherein: the frame periphery is provided with the protection and encloses the fender, and the protection encloses the fender and includes a plurality of side boards.

10. An electric self-buffering spring rail clamp as claimed in claim 4, wherein: the pressure spring connecting rod is sleeved with a spacer bush and is positioned between the connecting plate and the guide plate.