Truck-mounted crane corbel

Abstract

The utility model discloses a lorry-mounted crane corbel which comprises a main rod frame, a bearing limiting assembly and a buffer type protection assembly. The bearing limiting assembly is slidably assembled on one side of the main rod frame and comprises a telescopic rod, a connecting rod frame is hinged to the end, located outside the main rod frame, of the telescopic rod, bearing rods are slidably assembled on the two sides, away from the telescopic rod, of the connecting rod frame, and control oil cylinders are fixedly assembled on the two sides of the main rod frame. The buffering type protection assembly comprises a pair of assembly frames, buffering cylinders are hinged to the upper portions of the pair of assembly frames, supporting rods are slidably assembled in the buffering cylinders, fixing supports are hinged to the ends, located outside the buffering cylinders, of the supporting rods, and protection baffles are fixedly connected to the sides, away from the supporting rods, of the fixing supports. According to the lorry-mounted crane corbel disclosed by the utility model, the buffer type protection assembly is arranged, so that the lorry-mounted crane corbel has the functions of bearing limiting and oil cylinder protection, and the use stability and reliability of the lorry-mounted crane corbel are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted crane arms, and in particular relates to a vehicle-mounted crane arm. Background Art

[0002] Truck mounted crane, also known as "truck mounted crane transport vehicle", is a type of equipment that achieves the lifting, rotation and hoisting of goods through a hydraulic lifting and telescopic system. It is usually composed of a truck mounted crane and a chassis. It is widely used in municipal construction, coal mining projects, landscaping and other cargo lifting and transportation fields.

[0003] The truck crane arm is a type of mechanical component installed at the rear of the truck crane transport vehicle, mainly used to support and assist in the transportation of vehicles and other objects. Currently, the common truck crane arm is mainly composed of a support arm frame, a control cylinder and other accessories. The support arm frame is moved and controlled by controlling the extension and retraction of the cylinder telescopic rod, so that the support arm frame can support and transport vehicles or other objects.

[0004] Most of the truck-mounted crane arms in the prior art do not have the functions of supporting and limiting and protecting the oil cylinder, and cannot support and limit the tires or other objects of the vehicle being supported and transported. As a result, during use, the tires or other objects of the vehicle being supported and transported may collide with the control oil cylinder installed on the support arm frame, thereby causing damage to the control oil cylinder and the control oil circuit, resulting in poor stability and reliability in the use of the truck-mounted crane arm.

[0005] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a kind of vehicle-mounted crane arm.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0007] The utility model aims to provide a vehicle-mounted crane arm, which can improve the use stability and reliability of the vehicle-mounted crane arm.

[0008] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a vehicle-mounted lifting arm, including: a main rod frame, a supporting and limiting component, and a buffer-type protection component.

[0009] The supporting and limiting assembly is slidably assembled on one side of the main rod frame, and the supporting and limiting assembly includes a retractable rod, which is slidably assembled in the main rod frame. One end of the retractable rod located outside the main rod frame is hinged with a connecting rod frame, and both sides of the connecting rod frame away from the retractable rod are slidably assembled with supporting rods, and both sides of the main rod frame are fixedly assembled with control cylinders.

[0010] The buffer-type protection component is fixedly assembled on a side of the main rod frame close to the connecting rod frame, and the buffer-type protection component includes a pair of assembly frames, and the pair of assembly frames are fixedly connected to the side walls of the main rod frame, and the tops of the pair of assembly frames are hinged with buffer cylinders, and support rods are slidably assembled in the buffer cylinders. One end of the support rod located outside the buffer cylinder is hinged with a fixed support, and a protective baffle is fixedly connected to the side of the fixed support away from the support rod, and the protective baffle is arranged in cooperation with the control cylinder.

[0011] In one or more embodiments of the utility model, a mounting bracket is fixedly mounted on a side of the main rod frame away from the connecting rod frame, and the main rod frame is connected to the vehicle underframe by means of mounting and limiting the mounting bracket.

[0012] In one or more embodiments of the utility model, a telescopic oil cylinder is hinged in the main rod frame, and the piston rod of the telescopic oil cylinder is hinged to one end of the retractable rod located in the main rod frame. The telescopic state of the retractable rod is controlled by controlling the movement of the piston rod of the telescopic oil cylinder.

[0013] In one or more embodiments of the utility model, the ends of the pair of support rods away from the connecting rod frame are fixedly connected to auxiliary support members. The auxiliary support members are provided to improve the support stability of the support rods. At the same time, the auxiliary support members can be used to assist in supporting and limiting the tires of the vehicle to be supported or other objects. The side of the pair of support rods away from the main rod frame is fixedly connected to a wedge-shaped guide block. The tires of the vehicle to be supported or other objects are supported and guided by the wedge-shaped guide block.

[0014] In one or more embodiments of the utility model, the piston rods of a pair of control oil cylinders are hinged with a fixing frame, and the fixing frame is fixedly connected to the side wall of the main rod frame. The fixing frame connects and fixes the piston rod of the control oil cylinder and the main rod frame, so that the main rod frame can be controlled by the control oil cylinder for auxiliary limit and angle adjustment.

[0015] In one or more embodiments of the utility model, a pair of reinforcing ribs are fixedly connected between the assembly frame and the main rod frame, and the two ends of the reinforcing ribs are respectively connected to the assembly frame and the main rod frame. The reinforcing ribs strengthen the strength of the assembly frame, thereby improving the stability of the assembly frame.

[0016] In one or more embodiments of the utility model, a support is hinged at the bottom of the buffer cylinder, and the support is fixedly assembled above the assembly frame. The support serves as an assembly limit for the buffer cylinder and the assembly frame. A piston block is fixedly connected to one end of the support rod located in the buffer cylinder, and the piston block cooperates with the buffer cylinder to form a compression buffer air cavity. The support rod is buffered and limited by the movement of the piston block.

[0017] In one or more embodiments of the utility model, one end of the piston block located in the buffer cylinder is fixedly connected to a connecting spring, and the connecting spring is arranged in the compression buffer air cavity. The piston block is supported and limited by the contraction and reset of the connecting spring. An air guide cavity is cut at one end of the buffer cylinder close to the assembly frame. The air guide cavity serves to connect the conical air guide hole and the exhaust hole, so that the compression buffer air cavity is connected to the outside world.

[0018] In one or more embodiments of the utility model, a conical air guide hole is drilled at the bottom of the compression buffer air cavity, and the two ends of the conical air guide hole are respectively connected to the compression buffer air cavity and the air guide cavity, and the diameter of the conical air guide hole close to the air guide cavity is smaller than the diameter of the other end. This is convenient for making the air in the compression buffer air cavity flow slowly when it is discharged along the conical air guide hole, so that the piston block is buffered and limited by air pressure in a way of hindering the exhaust.

[0019] In one or more embodiments of the utility model, an exhaust hole is drilled at the bottom of the buffer cylinder, and the exhaust hole is connected to the air guide cavity. The air in the air guide cavity is discharged through the exhaust hole. An involvement plate is fixedly connected between the pair of protective baffles. The involvement plate supports and limits the pair of support rods, so that the pair of support rods can move synchronously under the action of the involvement plate.

[0020] Compared with the prior art, the utility model discloses a vehicle-mounted crane arm, which, by providing a buffer-type protection component, enables the vehicle-mounted crane arm to have the functions of supporting limit and oil cylinder protection, thereby improving the use stability and reliability of the vehicle-mounted crane arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A three-dimensional diagram of a vehicle-mounted crane arm in one embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional view from another angle of a vehicle-mounted crane arm in one embodiment of the utility model;

[0024] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0025] Figure 4It is a partial structural stereogram of a vehicle-mounted crane arm in one embodiment of the utility model;

[0026] Figure 5 It is a partial structural cross-sectional view of a vehicle-mounted crane arm in one embodiment of the utility model;

[0027] Figure 6 for Figure 5 Schematic diagram of the structure at B in the middle;

[0028] Figure 7 The utility model is a schematic diagram of an assembly state of a vehicle-mounted lifting arm in one embodiment.

[0029] Description of main reference numerals:

[0030] 1-main rod frame, 101-assembly support, 2-support limit assembly, 201-retraction rod, 202-connecting rod frame, 203-support rod, 204-control cylinder, 205-telescopic cylinder, 206-auxiliary support, 207-wedge guide block, 208-fixed frame, 3-buffered protection assembly, 301-assembly frame, 302-buffer cylinder, 303-support rod, 304-fixed support, 305-protection baffle, 306-reinforcement rib, 307-support, 308-piston block, 309-connecting spring, 310-air guide cavity, 311-involvement plate. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, a vehicle-mounted lifting arm in one embodiment of the utility model comprises: a main rod frame 1, a supporting and limiting component 2, and a buffering protection component 3.

[0033] like Figure 1 As shown, a mounting bracket 101 is fixedly mounted on one side of the main rod frame 1 away from the connecting rod frame 202. The main rod frame 1 is connected to the vehicle underframe by mounting and limiting the mounting bracket 101.

[0034] like Figure 1As shown, the support and limit assembly 2 is slidably assembled on one side of the main rod frame 1, and the support and limit assembly 2 includes a retractable rod 201, which is slidably assembled in the main rod frame 1. The retractable rod 201 serves to connect the connecting rod frame 202 and the main rod frame 1, and the movement of the connecting rod frame 202 and the support rod 203 is controlled by controlling the telescopic state of the retractable rod 201.

[0035] like Figure 4 As shown, a telescopic oil cylinder 205 is hinged in the main rod frame 1, and the piston rod of the telescopic oil cylinder 205 is hinged to one end of the contraction rod 201 located in the main rod frame 1. The telescopic state of the contraction rod 201 is controlled by controlling the movement of the piston rod of the telescopic oil cylinder 205.

[0036] like Figure 4 As shown, one end of the retractable rod 201 outside the main rod frame 1 is hinged with a connecting rod frame 202. The connecting rod frame 202 plays the role of assembly limit and telescopic guide for the supporting rod 203.

[0037] like Figure 4 As shown, both sides of the connecting rod frame 202 away from the contraction rod 201 are slidably equipped with supporting rods 203. The supporting rods 203 are used to support and limit the tires of the vehicle or other objects to be supported.

[0038] like Figures 1 to 3 As shown, control cylinders 204 are fixedly mounted on both sides of the main rod frame 1. The movement of the main rod frame 1 is controlled by controlling the movement of the piston rod of the control cylinder 204.

[0039] like Figures 2 to 3 As shown, the piston rods of a pair of control oil cylinders 204 are both hinged with a fixing frame 208, and the fixing frame 208 is fixedly connected to the side wall of the main rod frame 1. The fixing frame 208 connects and fixes the piston rods of the control oil cylinders 204 and the main rod frame 1, so that the main rod frame 1 can be controlled by the control oil cylinders 204 for auxiliary limit and angle adjustment.

[0040] like Figure 1 As shown, one end of a pair of supporting rods 203 away from the connecting rod frame 202 is fixedly connected to an auxiliary supporting member 206. The auxiliary supporting member 206 improves the supporting stability of the supporting rods 203. At the same time, the auxiliary supporting member 206 can be used to assist in supporting and limiting the tires of the vehicle or other objects to be supported.

[0041] like Figure 1 As shown, a pair of supporting rods 203 are fixedly connected with a wedge-shaped guide block 207 on one side away from the main rod frame 1. The wedge-shaped guide block 207 is used to support and guide the tire of the vehicle or other objects to be supported.

[0042] like Figures 5 and 6As shown, the buffer protection assembly 3 is fixedly assembled on one side of the main rod frame 1 close to the connecting rod frame 202, and the buffer protection assembly 3 includes a pair of assembly frames 301, and the pair of assembly frames 301 are fixedly connected to the side wall of the main rod frame 1. The assembly frames 301 play a role in assembling and fixing the support 307.

[0043] like Figures 2 to 3 As shown, a pair of assembly frames 301 and the main rod frame 1 are fixedly connected with reinforcing ribs 306, and the two ends of the reinforcing ribs 306 are respectively connected to the assembly frame 301 and the main rod frame 1. The reinforcing ribs 306 strengthen the strength of the assembly frame 301, thereby improving the stability of the assembly frame 301.

[0044] like Figures 5 and 6 As shown, a pair of assembly frames 301 are hinged with a buffer cylinder 302 on their upper sides. The buffer cylinder 302 plays the role of supporting and limiting the support rod 303 and guiding the extension. The support rod 303 is slidably mounted in the buffer cylinder 302. The support rod 303 plays the role of buffering, supporting and limiting the protection baffle 305.

[0045] like Figures 5 and 6 As shown, a support 307 is hinged at the bottom of the buffer cylinder 302, and the support 307 is fixedly assembled above the assembly frame 301. The support 307 plays a role of assembling and limiting the buffer cylinder 302 and the assembly frame 301.

[0046] like Figures 5 and 6 As shown, one end of the support rod 303 located in the buffer cylinder 302 is fixedly connected with a piston block 308, and the piston block 308 cooperates with the buffer cylinder 302 to form a compression buffer air cavity. The support rod 303 is buffered and limited by the movement of the piston block 308.

[0047] like Figures 5 and 6 As shown, one end of the piston block 308 located in the buffer cylinder 302 is fixedly connected to a connecting spring 309, which is arranged in the compression buffer air cavity. The contraction and reset of the connecting spring 309 play a role in supporting and limiting the piston block 308.

[0048] Specifically, an air guide cavity 310 is formed at one end of the buffer cylinder 302 close to the assembly frame 301. The air guide cavity 310 serves to connect the conical air guide hole and the exhaust hole, so that the compressed buffer air cavity is connected to the outside.

[0049] It is worth noting that a conical air guide hole is drilled at the bottom of the compression buffer air cavity, and the two ends of the conical air guide hole are respectively connected to the compression buffer air cavity and the air guide cavity 310, and the diameter of the conical air guide hole close to the air guide cavity 310 is smaller than the diameter of the other end. This is convenient for making the air in the compression buffer air cavity flow slowly when it is discharged along the conical air guide hole, so that the piston block 308 is buffered and limited by air pressure in a way of hindering exhaust.

[0050] The bottom of the buffer cylinder 302 is provided with an exhaust hole, which is connected to the air guide cavity 310. The air in the air guide cavity 310 is exhausted through the exhaust hole. An engagement plate 311 is fixedly connected between the pair of protective baffles 305. The engagement plate 311 supports and limits the pair of support rods 303, so that the pair of support rods 303 can move synchronously under the action of the engagement plate 311.

[0051] like Figures 5 and 6 As shown, one end of the support rod 303 outside the buffer cylinder 302 is hinged with a fixed support 304. The fixed support 304 serves to connect the support rod 303 and the protective baffle 305, and serves to limit the assembly of the protective baffle 305 through the support rod 303.

[0052] like Figures 5 and 6 As shown, a protective baffle 305 is fixedly connected to one side of the fixed support 304 away from the support rod 303, and the protective baffle 305 is arranged in cooperation with the control oil cylinder 204. The protective baffle 305 plays the role of limiting and anti-collision protection for the control oil cylinder 204.

[0053] When in use, the assembly support 101 is fixedly assembled under the frame of the truck crane vehicle, and at the same time, a pair of control cylinders 204 are assembled under the frame of the truck crane vehicle, thereby completing the assembly process of the truck crane support arm.

[0054] During use, the retractable rod 201 can be controlled to move by controlling the extension of the piston rod of the telescopic cylinder 205, and the inclination angle of the main rod frame 1 can be controlled by controlling the movement of the piston rods of a pair of control cylinders 204, so that the connecting rod frame 202 is in contact with the ground under the action of the control cylinder 204 and the telescopic cylinder 205, and the tires of the vehicle or other objects to be supported are supported and limited by the mutual cooperation of the connecting rod frame 202, the supporting rod 203, the auxiliary supporting member 206 and the wedge-shaped guide block 207.

[0055] At the same time, the supporting process of the supporting rod 203 can be limited and protected from collision by the protective baffle 305. When the protective baffle 305 is subjected to external force, the supporting rod 303 compresses the connecting spring 309 under the action of the external force. At this time, the air in the compressed buffer chamber is discharged along the conical air guide hole, the air guide cavity 310 and the exhaust hole under the action of the piston block 308. The air presents a state of fast exhaust and slow intake under the action of the conical air guide hole, thereby playing a buffering and limiting role for the supporting rod 303.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vehicle-mounted crane arm, characterized in that: include: Main pole frame; A support and limit assembly is slidably mounted on one side of the main rod frame, the support and limit assembly includes a retractable rod, the retractable rod is slidably mounted in the main rod frame, one end of the retractable rod located outside the main rod frame is hingedly connected to a connecting rod frame, both sides of the connecting rod frame away from the retractable rod are slidably mounted with support rods, and both sides of the main rod frame are fixedly mounted with control cylinders; A buffer-type protection component is fixedly installed on a side of the main rod frame close to the connecting rod frame. The buffer-type protection component includes a pair of assembly frames, each of which is fixedly connected to the side wall of the main rod frame. A buffer cylinder is hinged on the top of each of the assembly frames. A support rod is slidably installed in the buffer cylinder. One end of the support rod located outside the buffer cylinder is hinged with a fixed support. A protective baffle is fixedly connected to the side of the fixed support away from the support rod. The protective baffle is arranged in cooperation with the control cylinder.

2. The vehicle-mounted crane arm according to claim 1, characterized in that: A mounting support is fixedly mounted on one side of the main rod frame away from the connecting rod frame.

3. The vehicle-mounted crane arm according to claim 1, characterized in that: A telescopic oil cylinder is hinged in the main rod frame, and a piston rod of the telescopic oil cylinder is hinged to one end of a contraction rod located in the main rod frame.

4. The vehicle-mounted crane arm according to claim 1, characterized in that: One end of a pair of the supporting rods away from the connecting rod frame is fixedly connected to an auxiliary supporting member, and one side of a pair of the supporting rods away from the main rod frame is fixedly connected to a wedge-shaped guide block.

5. The vehicle-mounted crane arm according to claim 1, characterized in that: The piston rods of a pair of control oil cylinders are both hinged with a fixing frame, and the fixing frame is fixedly connected to the side wall of the main rod frame.

6. The vehicle-mounted crane arm according to claim 1, characterized in that: A pair of reinforcing ribs are fixedly connected between the assembly frame and the main rod frame, and two ends of the reinforcing ribs are respectively connected to the assembly frame and the main rod frame.

7. The vehicle-mounted crane arm according to claim 1, characterized in that: A support is hinged at the bottom of the buffer cylinder, and the support is fixedly assembled on the top of the assembly frame. One end of the support rod located in the buffer cylinder is fixedly connected to a piston block, and the piston block cooperates with the buffer cylinder to form a compression buffer air cavity.

8. The vehicle-mounted crane arm according to claim 7, characterized in that: One end of the piston block located in the buffer cylinder is fixedly connected with a connecting spring, and the connecting spring is arranged in the compression buffer air cavity. An air guide cavity is drilled at one end of the buffer cylinder close to the assembly frame.

9. The vehicle-mounted crane arm according to claim 8, characterized in that: A conical air guide hole is drilled at the bottom of the compression buffer air cavity, and the two ends of the conical air guide hole are respectively connected to the compression buffer air cavity and the air guide cavity. The diameter of the conical air guide hole close to the air guide cavity is smaller than the diameter of the other end.

10. The vehicle-mounted crane arm according to claim 9, characterized in that: An exhaust hole is drilled at the bottom of the buffer cylinder, and the exhaust hole is communicated with the air guide cavity. A connecting plate is fixedly connected between a pair of the protective baffles.

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