A crane with a clamp

Abstract

This utility model relates to a crane with clamps, comprising a boom, with a first support rod and a second support rod respectively disposed below the boom. A shaft is installed at the end of the first support rod, and both ends of the shaft are equipped with casters. A cross plate is installed at the end of the second support rod, and both ends of the cross plate are equipped with braked casters. Two hinged clamping arms are suspended at the end of the boom, with the second support rod positioned on the side of the first support rod away from the clamping arms. A clamping block is disposed at the lower end of each clamping arm. A limiting sleeve is fitted onto the outer surface of the boom, and a limiting block is installed on the outer surface of the limiting sleeve. A limiting rod is inserted inside the limiting block, and the lower end of the limiting rod is hinged to one of the clamping arms. By utilizing the braked casters for ground support and taking advantage of their ability to turn freely, the crane can be easily propelled to turn, thereby reducing physical exertion, minimizing wear on the casters, and extending their service life.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a crane with clamps. Background Technology

[0002] A crane is a device used to lift and move objects. Depending on the application, different types of cranes are used. Currently, small cranes are used for short-distance transport of heavy block materials such as stone. The main body of a crane consists of three parts: a boom, support wheels, and clamps. During operation, the clamps at one end of the boom clamp the block material, and the worker grips the other end of the boom. Using the support wheels as support points, the worker uses the lever principle to lift and move the block material.

[0003] However, the support wheels in the aforementioned device are directional wheels. While they offer good stability during movement, they generate significant friction when turning, requiring more effort and accelerating wear on the support wheels, thus reducing their lifespan. Furthermore, the clamps have poor stability, causing materials to sway during handling. Workers need to continuously grip the boom and apply force to suppress the swaying, increasing physical exertion. Utility Model Content

[0004] The purpose of this invention is to provide a crane with clamps to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows.

[0006] A crane with clamps includes a boom, with a first support rod and a second support rod respectively disposed below the boom. A shaft is installed at the end of the first support rod, and both ends of the shaft are equipped with casters. A cross plate is installed at the end of the second support rod, and both ends of the cross plate are equipped with braked casters. Two hinged clamping arms are suspended at the end of the boom, with the second support rod positioned on the side of the first support rod away from the clamping arms. A clamping block is provided at the lower end of each clamping arm. A limiting sleeve is fitted onto the outer surface of the boom, and a limiting block is installed on the outer surface of the limiting sleeve. A limiting rod is inserted inside the limiting block, and the lower end of the limiting rod is hinged to one of the clamping arms.

[0007] Therefore, by using braked swivel casters for ground support and leveraging their ability to turn freely, the crane can be easily propelled to turn, reducing physical exertion, minimizing wear on the casters, and extending their service life. The use of limit sleeves, limit blocks, and limit rods significantly reduces swaying during transport, further minimizing worker fatigue and enhancing safety by reducing the likelihood of collisions between the hoisted materials and other objects.

[0008] Furthermore, V-shaped plates are hinged to the lower ends of both clamping arms. There are four clamping blocks, each installed in pairs at both ends of the V-shaped plates. This provides four-point clamping of the material, significantly improving clamping stability.

[0009] Furthermore, a telescopic sleeve is fitted onto the end of the boom furthest from the clamping arm, and a first bolt is installed on the telescopic sleeve. This allows the overall length to be adjusted according to the weight of the stone and the transport distance.

[0010] Furthermore, a first mounting sleeve is fitted onto the outer surface of the boom, and both the first and second support rods are installed at the bottom of the first mounting sleeve. A second bolt is installed on the first mounting sleeve. The position of the fulcrum can be adjusted according to the size and weight of the material.

[0011] Furthermore, a second mounting sleeve is fitted onto the outer surface of the boom, and a hook is installed at the bottom of the second mounting sleeve. A wire rope is connected to the upper ends of both clamping arms. A third bolt is installed on the second mounting sleeve. The position of the clamping blocks can be adjusted according to the size and weight of the material.

[0012] Furthermore, a tension spring is connected to the upper side of the V-shaped plate, and the end of the tension spring is connected to the clamping arm. The tension spring applies a certain tension to the V-shaped plate, making the clamping block face the material as much as possible for easy clamping.

[0013] Furthermore, rubber pads are provided on the outer surfaces of both the clamping block and the telescopic sleeve, and the outer surfaces of the rubber pads are textured with anti-slip patterns. This is used to improve the clamping effect on materials, reduce hand slippage, and improve hand grip comfort.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0015] 1. This utility model, through the setting of movable wheels and universal wheels with brakes, uses movable wheels as support when moving forward, and can use universal wheels with brakes to support the ground when turning. Taking advantage of the ability of universal wheels with brakes to turn at will, the crane can be easily pushed to turn, thereby reducing physical exertion, reducing wear on movable wheels, and increasing service life.

[0016] 2. This utility model, through the setting of limiting sleeve, limiting block and limiting rod, firstly limits the lateral displacement of the clamping arm, thereby preventing the hoisted material from swaying laterally. Secondly, by utilizing the friction between the limiting sleeve and the surface of the boom, and the friction between the limiting rod and the limiting block and the limiting sleeve, a certain damping effect can be generated, which can limit the amplitude of the hoisted material's swaying in the front and back directions, thereby greatly reducing the swaying amplitude during the handling process, further reducing the physical exertion of workers, and increasing safety by reducing the possibility of the hoisted material colliding with other objects. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the first mounting sleeve in this utility model; Figure 3 This is a schematic diagram of the structure of the second mounting sleeve in this utility model; Figure 4 This is a schematic diagram of the V-shaped plate in this utility model.

[0018] In the diagram: 1. Boom; 101. Telescopic sleeve; 102. First bolt; 103. First mounting sleeve; 104. Second bolt; 105. Second mounting sleeve; 106. Third bolt; 107. Hook; 2. First support rod; 201. Shaft; 202. Moving wheel; 3. Clamping arm; 301. Clamping block; 302. Limiting sleeve; 303. Limiting sleeve block; 304. Limiting rod; 305. V-shaped plate; 306. Wire rope; 307. Tension spring; 4. Second support rod; 401. Horizontal plate; 402. Universal wheel with brake. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-4 As shown, a crane with clamps includes a boom 1. A first support rod 2 and a second support rod 4 are respectively installed below the boom 1. A shaft 201 is installed at the end of the first support rod 2, and both ends of the shaft 201 are equipped with casters 202. A horizontal plate 401 is installed at the end of the second support rod 401, and both ends of the horizontal plate 401 are equipped with braked casters 402. Two hinged clamping arms 3 are suspended at the end of the boom 1, and the second support rod 4 is located on the side of the first support rod 2 away from the clamping arms 3. A clamping block 301 is provided at the lower end of each clamping arm 3. A limiting sleeve 302 is fitted onto the outer surface of the boom 1, and a limiting sleeve block 303 is installed on the outer surface of the limiting sleeve 302. A limiting rod 304 is inserted inside the limiting sleeve block 303, and the lower end of the limiting rod 304 is hinged to one of the clamping arms 3.

[0021] In use, the worker pushes the crane to move it, causing the two clamping arms 3 to clamp the clamping blocks 301 on both sides of the material. Then, the crane arm 1 is pressed down, and with the moving wheel 202 as the fulcrum, the clamping blocks 301 can be driven to lift the material under the action of the lever principle. Then, the moving wheel 202 is used as support to push the material to move, achieving the purpose of short-distance transportation. When turning is required, the crane arm 1 can be pressed down again, which will cause the braked universal wheel 402 to support the ground and lift the moving wheel 202 off the ground. At this time, the ability of the braked universal wheel 402 to turn at will can be used to easily push the crane to turn, thereby reducing physical exertion, reducing wear on the moving wheel 202, increasing its service life, and making movement more flexible.

[0022] By setting up the limiting sleeve 302, the limiting block 303, and the limiting rod 304, the lateral displacement of the clamping arm 3 is first limited, thereby preventing the hoisted material from swaying laterally. When the material moves back and forth, it will cause the limiting sleeve 302 to slide on the surface of the boom 1, and the limiting rod 304 to slide inside the limiting block 303. By utilizing the friction between the limiting sleeve 302 and the surface of the boom 1, and the friction between the limiting rod 304 and the limiting block 303 and the limiting sleeve 302, a certain damping effect can be generated, which can limit the amplitude of the hoisted material's swaying in the back and forth direction, thereby greatly reducing the swaying amplitude during the handling process, further reducing the physical exertion of workers, and increasing safety by reducing the possibility of the hoisted material colliding with other objects.

[0023] Preferably, V-shaped plates 305 are hinged to the lower ends of both clamping arms 3. There are four clamping blocks 301, which are installed in pairs at both ends of the V-shaped plates 305.

[0024] By setting four clamping blocks 301, the material can be clamped at four points, so that the material is subjected to uniform force, which greatly improves the stability of clamping and avoids tilting.

[0025] Preferably, a telescopic sleeve 101 is fitted onto the end of the boom 1 away from the clamping arm 3, and a first bolt 102 is installed on the telescopic sleeve 101.

[0026] By setting the telescopic sleeve 101, the overall length of the boom 1 can be adjusted. The overall length can be adjusted according to the weight of the stone and the transportation distance, which improves the flexibility of use, reduces the space occupied, and facilitates storage.

[0027] Preferably, a first mounting sleeve 103 is fitted on the outer surface of the boom 1, and the first support rod 2 and the second support rod 4 are both installed at the bottom of the first mounting sleeve 103. A second bolt 104 is installed on the first mounting sleeve 103.

[0028] With the installation of the first mounting sleeve 103 and the second bolt 104, the position of the fulcrum can be adjusted according to the size and weight of the material, and the entire component can be removed and replaced, improving the flexibility of use.

[0029] Preferably, a second mounting sleeve 105 is fitted onto the outer surface of the boom 1, and a hook 107 is installed at the bottom of the second mounting sleeve 105. The upper ends of the two clamping arms 3 are connected together by a wire rope 306. A third bolt 106 is installed on the second mounting sleeve 105.

[0030] The hook 107 and wire rope 306 are used for lifting. The second mounting sleeve 105 and the third bolt 106 are used to adjust the position of the clamping block 301 according to the size and weight of the material. The entire component can be removed and replaced, improving the flexibility of use.

[0031] Preferably, a tension spring 307 is connected to the upper side of the V-shaped plate 305, and the end of the tension spring 307 is connected to the clamping arm 3.

[0032] A certain tension is applied to the V-shaped plate 305 by the tension spring 307, so that the clamping block 301 faces the material as much as possible, which facilitates clamping.

[0033] Preferably, the outer surfaces of both the clamping block 301 and the telescopic sleeve 101 are provided with rubber pads, and the outer surfaces of the rubber pads are provided with anti-slip textures.

[0034] The rubber pads and anti-slip textures increase the friction between the clamping block 301 and the telescopic sleeve 101, thereby improving the clamping effect on materials and reducing hand slippage and improving hand grip comfort.

[0035] Furthermore, the rubber material on the surface of the clamping block 301 is made of polyurethane rubber, which has high wear resistance and can resist the shear force generated by shaking during material handling, reducing the risk of rubber tearing and improving service life.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A crane with clamps, comprising a boom (1), characterized in that: The lower part of the boom (1) is provided with a first support rod (2) and a second support rod (4). The end of the first support rod (2) is equipped with a shaft (201), and both ends of the shaft (201) are provided with moving wheels (202). The end of the second support rod (4) is equipped with a horizontal plate (401), and both ends of the horizontal plate (401) are equipped with universal wheels (402) with brakes. The end of the boom (1) is equipped with two hinged clamp arms (3), and the second support rod (4) is located on the side of the first support rod (2) away from the clamp arms (3). The lower ends of the two clamp arms (3) are equipped with clamping blocks (301). The outer surface of the boom (1) is fitted with a limiting sleeve (302), the outer surface of the limiting sleeve (302) is fitted with a limiting block (303), the inside of the limiting block (303) is fitted with a limiting rod (304), and the lower end of the limiting rod (304) is hinged to one of the clamping arms (3).

2. The crane with clamps according to claim 1, characterized in that: The lower ends of both clamping arms (3) are hinged with V-shaped plates (305). The number of clamping blocks (301) is four, and they are installed in pairs at both ends of the V-shaped plate (305).

3. A crane with clamps according to claim 1, characterized in that: The boom (1) is fitted with a telescopic sleeve (101) at one end away from the clamping arm (3), and a first bolt (102) is installed on the telescopic sleeve (101).

4. A crane with clamps according to claim 1, characterized in that: The outer surface of the boom (1) is fitted with a first mounting sleeve (103), the first support rod (2) and the second support rod (4) are both installed at the bottom of the first mounting sleeve (103), and a second bolt (104) is installed on the first mounting sleeve (103).

5. A crane with clamps according to claim 1, characterized in that: The outer surface of the boom (1) is fitted with a second mounting sleeve (105), and a hook (107) is installed at the bottom of the second mounting sleeve (105). The upper ends of the two clamping arms (3) are connected together by a wire rope (306). A third bolt (106) is installed on the second mounting sleeve (105).

6. A crane with clamps according to claim 2, characterized in that: A tension spring (307) is connected to the upper side of the V-shaped plate (305), and the end of the tension spring (307) is connected to the clamping arm (3).

7. A crane with clamps according to claim 3, characterized in that: Both the clamping block (301) and the telescopic sleeve (101) are provided with rubber pads on their outer surfaces, and the outer surfaces of the rubber pads are provided with anti-slip textures.

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