Light crane telescopic hard arm clamp

Abstract

The present invention discloses a telescopic hard arm clamp for a light crane, comprising: a telescopic tube, one end of the telescopic tube is connected to a main beam trolley, the other end of the telescopic tube is provided with a clamp assembly, an electric hoist, the electric hoist is located above one end of the telescopic tube, a chain of the electric hoist passes through the telescopic tube and is connected to the clamp assembly, and can pull the clamp assembly and shrink the telescopic tube, a driving bracket, one end of the driving bracket is rotatably connected to one end of the telescopic tube, the other end of the driving bracket is provided with a driving wheel and a driving motor, and an elastic component is arranged on the driving bracket. The telescopic hard arm clamp for the light crane provides a rigid connection through the telescopic tube to increase the stability of the crane, and compensates the gap between the driving wheel and the track through a connecting rod and a compression spring, so that the driving wheel maintains close contact with the track, and at the same time utilizes the deformation of the compressed spring to compensate the vibration gap to avoid separation of the driving wheel from the track.

Description

Technical Field

[0001] The invention belongs to the technical field of light cranes, and more specifically, relates to a telescopic hard arm clamp of a light crane. Background Art

[0002] In the steel structure factories of logistics, warehousing, machinery manufacturing, automobile, new energy battery and other industries, workpieces need to be moved. Due to the structure of the factory, most of the installed cranes are light cranes with limited overall stability. When moving large and heavy workpieces, the workpieces have poor stability and sway in the air, which is not conducive to assembly. Summary of the invention

[0003] The purpose of the present invention is to provide a telescopic hard arm clamp for a light crane in view of the deficiencies in the prior art. The telescopic hard arm clamp for a light crane provides a rigid connection through a telescopic tube to increase the stability of the crane, compensates for the gap between the driving wheel and the track through a connecting rod and a compression spring, so that the driving wheel maintains close contact with the track, and simultaneously utilizes the deformation of the compressed spring to compensate for the vibration gap to avoid separation of the driving wheel from the track, reduces the amplitude of product shaking during lifting, avoids assembly difficulties caused by excessive shaking, or avoids product bumps caused by difficult to control shaking of the lifted product.

[0004] In order to achieve the above object, the present invention provides a light crane telescopic hard arm clamp, comprising:

[0005] A telescopic tube, one end of which is connected to the main beam trolley, and the other end of which is provided with a clamp assembly;

[0006] An electric hoist, the electric hoist is located above the one end of the telescopic tube, a chain of the electric hoist passes through the telescopic tube and is connected to the clamp assembly, and can pull the clamp assembly and retract the telescopic tube;

[0007] A driving bracket, one end of which is rotatably connected to the one end of the telescopic tube, and the other end of which is provided with a driving wheel and a driving motor;

[0008] An elastic component is arranged on the driving bracket, and the elastic component can apply a force to the driving bracket to make the driving wheel move toward a side close to the main beam.

[0009] Optionally, the driving wheel includes two rubber-coated driving wheels, the driving bracket includes two side plates and a driving shaft, one end of the two side plates is connected to the telescopic tube, both ends of the driving shaft pass through the other ends of the two side plates and are exposed, and the two rubber-coated driving wheels are respectively arranged at both ends of the driving shaft.

[0010] Optionally, the driving motor is a three-in-one reduction motor, and the three-in-one reduction motor is arranged on the driving shaft and located between the two side plates.

[0011] Optionally, the telescopic tube includes a hard arm bracket, a hard arm outer sleeve and a hard arm inner sleeve, one end of the hard arm inner sleeve is slidably connected inside the hard arm outer sleeve, and one end of the hard arm outer sleeve passes through the hard arm bracket.

[0012] Optionally, the horizontal cross-section of the rigid arm support is rectangular, the number of the main beam trolleys is four groups, and the four groups of main beam trolleys are respectively arranged at four groups of symmetrical corners of the rigid arm support.

[0013] Optionally, a protective cover is provided on the rigid arm support, and the electric hoist is located inside the protective cover.

[0014] Optionally, the clamp assembly comprises a clamp bracket, and a plurality of clamps are arranged on the clamp bracket.

[0015] Optionally, a slewing mechanism is provided below the electric hoist bracket, and the slewing mechanism is connected to the clamp bracket.

[0016] Optionally, a support rod is arranged between the two side plates, and the elastic component includes a connecting rod and a compression spring, one end of the connecting rod is connected to the one end of the telescopic tube, one end of the compression spring is connected to the other end of the connecting rod, and the other end of the compression spring is connected to the driving bracket.

[0017] Optionally, a guide rod passes through one end of the connecting rod, one end of the guide rod is connected to the side plate, the other end of the guide rod passes through the connecting rod and is exposed, a limiting plate is provided at the other end of the guide rod, the compression spring is sleeved on the guide rod, and the two ends of the compression spring are respectively connected to the limiting plate and the connecting rod.

[0018] The present invention provides a light crane telescopic hard arm clamp, which has the following beneficial effects:

[0019] The telescopic hard arm clamp of the light crane provides a rigid connection through a telescopic tube to increase the stability of the crane, and compensates for the gap between the driving wheel and the track through a connecting rod and a compression spring, so that the driving wheel maintains close contact with the track. At the same time, the deformation of the compressed spring is used to compensate for the vibration gap to avoid separation of the driving wheel from the track, thereby reducing the amplitude of product shaking during lifting, avoiding assembly difficulties caused by excessive shaking, or avoiding product bumps caused by difficult-to-control shaking of the lifted product.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0022] Figure 1 A front view of a telescopic hard arm clamp for a light crane according to an embodiment of the present invention is shown.

[0023] Figure 2 A structural diagram of a load-bearing beam of a telescopic hard arm clamp of a light crane according to an embodiment of the present invention is shown.

[0024] Description of reference numerals:

[0025] 1. Clamp; 2. Clamp bracket; 3. Rotating assembly; 4. Inner sleeve of hard arm; 5. Outer sleeve of hard arm; 6. Hard arm bracket; 7. Main beam trolley; 8. Electric hoist; 9. Compression spring; 10. Three-in-one motor reducer; 11. Rubber-coated driving wheel; 12. Side plate; 13. Driving shaft; 14. Driving bracket. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] Figure 1 A front view of a telescopic hard arm clamp for a light crane according to an embodiment of the present invention is shown; Figure 2 A structural diagram of a load-bearing beam of a telescopic hard arm clamp of a light crane according to an embodiment of the present invention is shown.

[0028] like Figure 1-2 As shown, the light crane telescopic hard arm clamp includes:

[0029] A telescopic tube, one end of which is connected to the main beam trolley 7, and the other end of which is provided with a clamp assembly;

[0030] An electric hoist 8, the electric hoist 8 is located above one end of the telescopic tube, a chain of the electric hoist 8 passes through the telescopic tube and is connected to the clamp assembly, and can pull the clamp assembly and retract the telescopic tube;

[0031] A driving bracket 14, one end of which is rotatably connected to one end of the telescopic tube, and the other end of the driving bracket 14 is provided with a driving wheel and a driving motor;

[0032] The elastic component is arranged on the driving bracket 14, and the elastic component can apply a force to the driving bracket 14 to make the driving wheel move toward a side close to the main beam.

[0033] Specifically, the telescopic tube sleeve is placed on the chain of the electric hoist 8 and rises and falls with the clamp assembly to provide rigid support for the clamp assembly during lifting and moving, reduce shaking during lifting and moving, enhance stability, and improve assembly accuracy. The driving wheel on the driving bracket 14 is kept in close contact with the track through the connecting rod and the compression spring 9, and the deformation of the compression spring 9 is used to compensate for the vibration gap to avoid separation of the driving wheel from the track.

[0034] In this embodiment, the driving wheel includes two rubber-coated driving wheels 11, and the driving bracket 14 includes two side plates 12 and a driving shaft 13. One end of the two side plates 12 is connected to the telescopic tube, and both ends of the driving shaft 13 pass through the other end of the two side plates 12 and are exposed. The two rubber-coated driving wheels 11 are respectively arranged at both ends of the driving shaft 13.

[0035] Specifically, the driving motor drives the two rubber-coated driving wheels 11 to rotate synchronously through the driving shaft 13, so that the synchronization of driving the rubber-coated driving wheels 11 is achieved from the perspective of mechanical structure, and the electrical control is added to make the operation synchronization better.

[0036] In this embodiment, the driving motor is a three-in-one reduction motor 10 , which is disposed on a driving shaft 13 and located between two side plates 12 .

[0037] In this embodiment, the telescopic tube includes a hard arm bracket 6, a hard arm outer sleeve 5 and a hard arm inner sleeve 4, one end of the hard arm inner sleeve 4 is slidably connected in the hard arm outer sleeve 5, and one end of the hard arm outer sleeve 5 passes through the hard arm bracket 6.

[0038] Specifically, the main beam trolley 7 is connected via the hard arm bracket 6, and the hard arm outer sleeve 5 and the hard arm inner sleeve 4 are plugged into each other for extension and retraction.

[0039] In this embodiment, the horizontal cross-section of the rigid arm support is rectangular, and there are four groups of main beam trolleys, which are respectively arranged at four symmetrical corners of the rigid arm support.

[0040] In this embodiment, a protective cover is provided on the rigid arm support, and the chain of the electric hoist is located inside the protective cover.

[0041] Specifically, the protective cover is an accordion protective cover, which protects the chain of the electric hoist.

[0042] In this embodiment, the clamp assembly includes a clamp bracket 2 , on which a plurality of clamps 1 are arranged.

[0043] Specifically, the clamp 1 is installed through the clamp bracket 2 .

[0044] In this embodiment, a slewing mechanism is provided below the bracket of the electric hoist 8, and the slewing mechanism is connected to the fixture bracket 2.

[0045] Specifically, a slewing mechanism 3 is provided on the chain of the electric hoist 8, one side of the slewing mechanism 3 is connected to the telescopic tube, and the other side of the slewing mechanism 3 is connected to the clamp bracket 2. The slewing mechanism 3 is used to conveniently rotate the clamp bracket 2, thereby adjusting the angle of the clamp 1.

[0046] Furthermore, the slewing mechanism includes a disc, the center of which is rotatably connected to a hook that matches the chain of the electric hoist 8 , one side of the disc is provided with a connector that matches the telescopic tube, and the other side is connected to the clamp bracket 2 .

[0047] In this embodiment, a support rod is arranged between the two side plates 12, and the elastic component includes a connecting rod and a compression spring 9, one end of the connecting rod is connected to one end of the telescopic tube, one end of the compression spring 9 is connected to the other end of the connecting rod, and the other end of the compression spring 9 is connected to the driving bracket 14.

[0048] Specifically, the support rods are used to prevent the two side plates 12 from deforming and change the gap.

[0049] In this embodiment, a guide rod passes through one end of the connecting rod, one end of the guide rod is connected to the side plate 12, the other end of the guide rod passes through the connecting rod and is exposed, a limiting plate is provided at the other end of the guide rod, and a compression spring sleeve 9 is provided on the guide rod, and both ends of the compression spring 9 are respectively connected to the limiting plate and the connecting rod.

[0050] Specifically, the guide rod is a threaded rod, the limiting piece is a nut, and the preload force of the compression spring 9 is adjusted by adjusting the position of the nut on the guide rod.

[0051] When the telescopic hard arm clamp of the light crane of this embodiment is used, taking the lifting of workpieces in the factory as an example, the clamp 1 clamps the workpiece, and then the electric hoist 8 drives the clamp bracket to rise, and the telescopic tube contracts. After reaching the safe height, the three-in-one reduction motor 10 drives the rubber-coated driving wheel 11 to rotate, thereby moving the workpiece. During the movement, the telescopic tube connects the telescopic bracket and the clamp bracket 2, and reduces sliding through rigid contact. At the same time, the deformation of the compression spring 9 is used to compensate for the vibration gap, so as to avoid the separation of the rubber-coated driving wheel 11 from the main beam (track), further reducing the shaking, avoiding assembly difficulties caused by excessive shaking, or avoiding product bumps caused by uncontrollable shaking of the hoisted products.

[0052] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. Light crane telescopic hard arm clamp, characterized in that: include: A telescopic tube, one end of which is connected to the main beam trolley, and the other end of which is provided with a clamp assembly; An electric hoist, the electric hoist is located above the one end of the telescopic tube, a chain of the electric hoist passes through the telescopic tube and is connected to the clamp assembly, and can pull the clamp assembly and retract the telescopic tube; A driving bracket, one end of which is rotatably connected to the one end of the telescopic tube, and the other end of which is provided with a driving wheel and a driving motor; an elastic component, wherein the elastic component is arranged on the driving bracket, and the elastic component can apply a force to the driving bracket to make the driving wheel move toward a side close to the main beam; The driving wheel comprises two rubber-coated driving wheels, the driving bracket comprises two side plates and a driving shaft, one end of the two side plates is connected to the telescopic tube, the two ends of the driving shaft pass through the other ends of the two side plates and are exposed, and the two rubber-coated driving wheels are respectively arranged at the two ends of the driving shaft; The clamp assembly comprises a clamp bracket, and a plurality of clamps are arranged on the clamp bracket; A slewing mechanism is provided below the electric hoist bracket, and the slewing mechanism is connected to the clamp bracket; The slewing mechanism comprises a disc, the center of which is rotatably connected with a hook matched with the chain of the electric hoist, one side of the disc is provided with a connector matched with the telescopic tube, and the other side is connected with the clamp bracket; A support rod is arranged between the two side plates, and the elastic component includes a connecting rod and a compression spring, one end of the connecting rod is connected to the one end of the telescopic tube, one end of the compression spring is connected to the other end of the connecting rod, and the other end of the compression spring is connected to the driving bracket.

2. The light crane telescopic hard arm clamp according to claim 1, characterized in that: The driving motor is a three-in-one reduction motor, which is arranged on the driving shaft and located between the two side plates.

3. The light crane telescopic hard arm clamp according to claim 1, characterized in that: The telescopic tube comprises a hard arm bracket, a hard arm outer sleeve and a hard arm inner sleeve, one end of the hard arm inner sleeve is slidably connected in the hard arm outer sleeve, and one end of the hard arm outer sleeve passes through the hard arm bracket.

4. The light crane telescopic hard arm clamp according to claim 3, characterized in that: The horizontal cross-section of the rigid arm support is rectangular, and the number of the main beam trolleys is four groups, and the four groups of the main beam trolleys are respectively arranged on four groups of symmetrical corners of the rigid arm support.

5. The light crane telescopic hard arm clamp according to claim 3, characterized in that: A protective cover is arranged on the rigid arm support, and the chain of the electric hoist is located inside the protective cover.

6. The light crane telescopic hard arm clamp according to claim 1, characterized in that: A guide rod passes through one end of the connecting rod, one end of the guide rod is connected to the side plate, the other end of the guide rod passes through the connecting rod and is exposed, a limiting plate is provided at the other end of the guide rod, the compression spring is sleeved on the guide rod, and both ends of the compression spring are respectively connected to the limiting plate and the connecting rod.

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