Lifting appliance suitable for excavator bucket rod

Abstract

The utility model discloses a lifting appliance suitable for an excavator bucket rod, and relates to the technical field of lifting. The device comprises a supporting frame, the top of the supporting frame is fixedly connected with a motor, the output end of the motor is fixedly connected with a composite belt wheel through a rotating shaft, the outer surface of the composite belt wheel is in transmission connection with a first belt, and a first belt wheel is arranged on the right side of the composite belt wheel. By arranging the clamping plate assembly, specifically, when the fixing plates on the two sides make contact with the bucket rod, the arc-shaped blocks in the fixing plates make contact with the bucket rod, the arc-shaped blocks rotate according to the shape of the outer surface of the bucket rod, and the surfaces of the arc-shaped blocks can slide along the shape of the bucket rod till the arc-shaped blocks are completely attached to the bucket rod; according to the bucket rod clamping device, tight contact between the fixing plate and the bucket rod is ensured, so that the clamping stability and safety are improved, bucket rods of different shapes and sizes can be clamped, the clamping plates do not need to be replaced or adjusted, and the universality and adaptability of hoisting operation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting, in particular to a hoisting device suitable for an excavator bucket arm. Background Art

[0002] The boom is an arm-like structure connected to the bucket on the excavator and used to control the bucket to perform excavation, loading and other actions. The technical term is called the boom, commonly known as the forearm. The main function of the boom is to cooperate with the boom and bucket to realize the excavator's excavation, loading, leveling and other operations. Through the extension and retraction of the boom cylinder, the boom can rotate around the hinge point at the upper end of the boom, thereby changing the position and posture of the bucket. When installing or repairing the excavation boom, a lifting machine is required due to its excessive weight.

[0003] Usually, in order to adapt to different excavation ranges and operating sizes, most excavator manufacturers configure booms of different lengths and specifications on the same model. When lifting booms of different specifications, fixed lifting equipment cannot meet the lifting requirements of booms of different specifications, so lifting equipment of different shapes is required. Replacing the lifting equipment makes the lifting and maintenance of the boom low in efficiency. Therefore, we propose a lifting equipment suitable for excavator booms. Utility Model Content

[0004] The utility model aims to provide a lifting device suitable for the boom of an excavator, which ensures close contact between a fixed plate and the boom by arranging a clamping plate assembly, thereby improving the stability and safety of clamping, and can clamp booms of different shapes and sizes without replacing or adjusting the clamping plate, thereby improving the versatility and adaptability of lifting operations, and solving the problem that when booms of different specifications are lifted, a fixed lifting device cannot meet the lifting requirements of booms of different specifications, thereby requiring the use of lifting devices of different shapes, and the replacement of the lifting device leads to low efficiency in lifting and repairing the boom.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a sling suitable for an excavator boom, comprising a support frame, a motor is fixedly connected to the top of the support frame, a composite pulley is fixedly connected to the output end of the motor through a rotating shaft, a belt one is connected to the outer surface of the composite pulley through transmission, a pulley one is arranged on the right side of the composite pulley, the composite pulley is connected to the outer surface of the pulley one through transmission, a belt two is connected to the outer surface of the composite pulley through transmission, a pulley two is arranged on the left side of the composite pulley, the composite pulley is connected to the outer surface of the pulley two through transmission, the elasticity of the belt transmission helps to prevent vibration and impact caused by unstable machine operation, and the composite pulley drives two pulleys to rotate through two belts to achieve a synchronous effect;

[0007] The clamping plate assembly, the clamping plate assembly includes a fixing plate, a plurality of placing grooves are opened inside the fixing plate, round rods are fixedly connected to the inner walls of the plurality of placing grooves, arc-shaped blocks are rotatably connected to the outer surfaces of the plurality of round rods, and the surface of the arc-shaped block will slide along the shape of the dipper stick until it is completely fitted thereto, ensuring close contact between the fixing plate and the dipper stick, thereby improving the clamping stability and safety. The surface of the arc-shaped block is provided with stripes to increase the friction with the dipper stick.

[0008] Further, a threaded rod is threadedly connected to the inner wall of the second pulley. The number of the threaded rods is two. The outer surface of the threaded rod on the right side is threadedly connected to the inner wall of the first pulley. The outer surfaces of the two threaded rods slidably penetrate through the inner wall of the support frame and extend to the outside. Limiting plates are fixedly connected to the extending ends of the two threaded rods. By providing the limiting plates, the threaded rods are prevented from disengaging from the inner wall of the pulley.

[0009] Further, clamping assemblies are arranged at the bottoms of the two threaded rods. The clamping assembly includes a fixing frame slidably connected to the outer surface of the threaded rod. Two rotating rods are rotatably connected to the outer surface of the fixing frame. Connecting rods are rotatably connected to the inner walls of the two rotating rods. The two connecting rods are rotatably connected to a connecting block at the ends far away from the rotating rods. When the rotating rods apply a clamping force to an object, the fixing frame can disperse and transmit these forces, making the clamping more firm and reliable.

[0010] Further, one side of the connecting block close to the threaded rod is fixedly connected to the bottom of the threaded rod. The sides of the two rotating rods close to each other are fixedly connected to the outer surface of the fixing plate. By driving the two rotating rods on both sides to approach each other through the connecting rods on both sides, the two rotating rods drive the fixing plates to approach each other while approaching each other. The two fixing plates approach the dipper stick of the excavator at the same time and clamp and fix the dipper stick. During the hoisting process, the dipper stick is not likely to fall off due to shaking or external force, thereby ensuring the safety of the hoisting operation.

[0011] Further, the outer surface of the fixing frame is fixedly connected to the inner wall of the support frame. Two limiting grooves are opened in the inner wall of the support frame. Limiting rings are rotatably connected to the inner walls of the two limiting grooves on both sides. The inner space of the limiting groove is large and the outlet is small, which can be used to install components such as bearings and seals to ensure that the limiting ring can be stably fixed at a specified position.

[0012] Further, one side of the limiting ring on the left side far away from the limiting groove is fixedly connected to the second pulley, and one side of the limiting ring on the right side far away from the limiting groove is fixedly connected to the first pulley. The limiting ring is connected to the pulley, which can keep the pulley in a fixed position during rotation and will not shift, resulting in abnormal transmission.

[0013] The utility model has the following beneficial effects:

[0014] 1. By setting the clamping plate assembly in the utility model, specifically when the fixed plates on both sides contact the bucket arm, the arc-shaped blocks inside the fixed plates contact the bucket arm. The arc-shaped blocks rotate according to the shape of the outer surface of the bucket arm, and the surface of the arc-shaped blocks slides along the shape of the bucket arm until it fits completely, ensuring the close contact between the fixed plate and the bucket arm. Thus, the clamping stability and safety are improved, and the bucket arms of different shapes and sizes can be clamped without replacing or adjusting the clamping plates, improving the versatility and adaptability of the hoisting operation.

[0015] 2. By setting the clamping assembly in the utility model, specifically when the connecting block moves upward, it drives the rotating rods on both sides to approach each other through the connecting rods on both sides. While the two rotating rods approach each other, they drive the fixed plates to approach each other. The two fixed plates simultaneously approach the bucket arm of the excavator and clamp and fix the bucket arm. Both ends of the bucket arm are fixed at the same time. The design of the fixed plates on both sides enables the spreader to clamp the bucket arm more stably. During the hoisting process, the bucket arm is not easily detached due to shaking or external forces, thus ensuring the safety of the lifting operation.

[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the composite pulley structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 It is an enlarged schematic diagram of the structure of A in the utility model;

[0021] Figure 4 It is a schematic diagram of the clamping assembly structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the rotating rod structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the clamping plate assembly structure of the utility model.

[0024] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Support frame; 101. Motor; 102. Compound pulley; 103. Belt 1; 104. Pulley 1; 105. Belt 2; 106. Pulley 2; 107. Limit ring; 2. Clamping plate assembly; 201. Fixed plate; 202. Placing groove; 203. Round rod; 204. Arc-shaped block; 301. Threaded rod; 302. Limit plate; 4. Clamping assembly; 401. Fixed frame; 402. Rotating rod; 403. Connecting block; 404. Connecting rod. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-6 As shown in the figure, the present invention is a sling applicable to the boom of an excavator, including a support frame 1. The top of the support frame 1 is fixedly connected with a motor 101. The output end of the motor 101 is fixedly connected with a compound pulley 102 through a rotating shaft. The outer surface of the compound pulley 102 is drivingly connected with a Belt 103. A Pulley 104 is arranged on the right side of the compound pulley 102. The compound pulley 102 is drivingly connected with the outer surface of the Pulley 104 through the Belt 103. The outer surface of the compound pulley 102 is drivingly connected with a Belt 105. A Pulley 106 is arranged on the left side of the compound pulley 102. The compound pulley 102 is drivingly connected with the Pulley 106 through the Belt 105;

[0028] The clamping plate assembly 2 includes a fixed plate 201. A plurality of placing grooves 202 are formed inside the fixed plate 201. Round rods 203 are fixedly connected to the inner walls of the plurality of placing grooves 202. Arc-shaped blocks 204 are rotatably connected to the outer surfaces of the plurality of round rods 203. By providing the clamping plate assembly 2, specifically, when the fixed plates 201 on both sides come into contact with the boom, the arc-shaped blocks 204 inside the fixed plates 201 come into contact with the boom. The arc-shaped blocks 204 rotate according to the shape of the outer surface of the boom, and the surface of the arc-shaped blocks 204 slides along the shape of the boom until it completely fits, ensuring the close contact between the fixed plate 201 and the boom, thereby improving the clamping stability and safety, being able to clamp booms of different shapes and sizes without replacing or adjusting the clamping plates, and improving the versatility and adaptability of the hoisting operation.

[0029] The inner wall of the second pulley 106 is threadedly connected with threaded rods 301. The number of the threaded rods 301 is two. The outer surface of the right threaded rod 301 is threadedly connected with the inner wall of the first pulley 104. The outer surfaces of the two threaded rods 301 both slidably penetrate through the inner wall of the support frame 1 and extend to the outside. The extended ends of the two threaded rods 301 are both fixedly connected with limiting plates 302.

[0030] Clamping assemblies 4 are arranged at the bottoms of the two threaded rods 301. Each clamping assembly 4 includes a fixed frame 401 slidably connected to the outer surface of the threaded rod 301.

[0031] Two rotating rods 402 are rotatably connected to the outer surface of the fixed frame 401. Connecting rods 404 are rotatably connected to the inner walls of the two rotating rods 402. One ends of the two connecting rods 404 away from the rotating rods 402 are rotatably connected with a connecting block 403.

[0032] One side of the connecting block 403 close to the threaded rod 301 is fixedly connected with the bottom of the threaded rod 301. One sides of the two rotating rods 402 close to each other are fixedly connected with the outer surface of the fixed plate 201. By arranging the clamping assembly 4, specifically, during the upward movement of the connecting block 403, the two rotating rods 402 on both sides are driven to approach each other through the connecting rods 404 on both sides. While the two rotating rods 402 approach each other, the two fixed plates 201 are driven to approach each other. The two fixed plates 201 simultaneously approach the bucket rod of the excavator and clamp and fix the bucket rod. Both ends of the bucket rod are fixed at the same time. The design of the two fixed plates 201 enables the lifting device to clamp the bucket rod more stably. During the lifting process, the bucket rod is not easily detached due to shaking or external forces, thus ensuring the safety of the lifting operation.

[0033] The outer surface of the fixed frame 401 is fixedly connected with the inner wall of the support frame 1. Two limiting grooves are formed in the inner wall of the support frame 1. Limiting rings 107 are rotatably connected to the inner walls of the two limiting grooves on both sides.

[0034] One side of the left limiting ring 107 away from the limiting groove is fixedly connected with the second pulley 106. One side of the right limiting ring 107 away from the limiting groove is fixedly connected with the first pulley 104.

[0035] A specific application of this embodiment is as follows: During the use of the device, the crane hoists the entire lifting tool through two lifting rings arranged at the top of the support frame 1. The motor 101 is started, and the output shaft drives the compound pulley 102 to rotate clockwise. While the compound pulley 102 rotates, it drives the pulley 104 and the pulley 106 to rotate through the belt 103 and the belt 205 respectively. As the pulley 104 and the pulley 106 rotate synchronously with the compound pulley 102, the threaded rod 301 inside the pulley 106 and the pulley 104 moves upward. While the threaded rod 301 moves upward, it drives the connecting block 403 to move upward. During the upward movement of the connecting block 403, the two rotating rods 402 on both sides are driven to approach each other through the connecting rods 404 on both sides. While the two rotating rods 402 approach each other, they drive the fixing plates 201 to approach each other. The two fixing plates 201 simultaneously approach the boom of the excavator and clamp and fix the boom. Both ends of the boom are fixed simultaneously. The design of the two fixing plates 201 enables the lifting tool to clamp the boom more stably. During the hoisting process, the boom is not easily detached due to shaking or external forces, thus ensuring the safety of the hoisting operation.

[0036] There are several placement grooves 202 inside the fixing plate 201. An arc-shaped block 204 is arranged inside the several placement grooves 202 and rotates on the surface of the round rod 203. When the fixing plates 201 on both sides contact the boom, the arc-shaped blocks 204 inside the fixing plates 201 contact the boom. The arc-shaped blocks 204 rotate according to the shape of the outer surface of the boom, and the surface of the arc-shaped blocks 204 slides along the shape of the boom until it completely fits, ensuring the close contact between the fixing plate 201 and the boom, thereby improving the clamping stability and safety. It can clamp booms of different shapes and sizes without replacing or adjusting the clamping plates, improving the versatility and adaptability of the hoisting operation.

[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with this embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A sling suitable for an excavator boom, comprising a support frame (1), a motor (101) being fixedly connected to the top of the support frame (1), an output end of the motor (101) being fixedly connected to a composite pulley (102) via a rotating shaft, an outer surface of the composite pulley (102) being transmission-connected to a belt one (103), a pulley one (104) being arranged on the right side of the composite pulley (102), the composite pulley (102) being transmission-connected to the outer surface of pulley one (104) via belt one (103), the outer surface of the composite pulley (102) being transmission-connected to a belt two (105), a pulley two (106) being arranged on the left side of the composite pulley (102), the composite pulley (102) being transmission-connected to a pulley two (106) via belt two (105), characterized in that ； The splint assembly (2), the splint assembly (2) includes a fixing plate (201), a plurality of placing grooves (202) are formed inside the fixing plate (201), circular rods (203) are fixedly connected to the inner walls of the plurality of placing grooves (202), and arc-shaped blocks (204) are rotatably connected to the outer surfaces of the plurality of circular rods (203).

2. The spreader applicable to the dipper arm of an excavator according to claim 1, characterized in that, A threaded rod (301) is threadedly connected to the inner wall of the second pulley (106). The number of the threaded rods (301) is two. The outer surface of the threaded rod (301) on the right side is threadedly connected to the inner wall of the first pulley (104). The outer surfaces of the two threaded rods (301) all slidably penetrate through the inner wall of the support frame (1) and extend to the outside. Limiting plates (302) are fixedly connected to the extending ends of the two threaded rods (301).

3. The spreader for the stick of an excavator according to claim 2, wherein, Clamping assemblies (4) are arranged at the bottoms of the two threaded rods (301). The clamping assembly (4) includes a fixing frame (401) slidably connected to the outer surface of the threaded rod (301).

4. The spreader for an excavator stick according to claim 3, characterized in that, Two rotating rods (402) are rotatably connected to the outer surface of the fixing frame (401). Connecting rods (404) are rotatably connected to the inner walls of the two rotating rods (402). The ends of the two connecting rods (404) far away from the rotating rods (402) are rotatably connected to a connecting block (403).

5. The spreader applicable to the dipper arm of an excavator according to claim 4, characterized in that, One side of the connecting block (403) close to the threaded rod (301) is fixedly connected to the bottom of the threaded rod (301). The sides of the two rotating rods (402) close to each other are fixedly connected to the outer surface of the fixing plate (201).

6. The spreader applicable to the dipper arm of an excavator according to claim 5, characterized in that, The outer surface of the fixing frame (401) is fixedly connected to the inner wall of the support frame (1). Two limiting grooves are formed in the inner wall of the support frame (1). Limiting rings (107) are rotatably connected to the inner walls of the limiting grooves on both sides.

7. The spreader for an excavator stick according to claim 6, wherein, One side of the limiting ring (107) on the left side far away from the limiting groove is fixedly connected to the second pulley (106). One side of the limiting ring (107) on the right side far away from the limiting groove is fixedly connected to the first pulley (104).

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