Detachable crane telescopic arm

Abstract

The utility model relates to the technical field of crane telescopic booms, in particular to a detachable crane telescopic boom which comprises a telescopic boom body, a lubricating structure is arranged on the surface of the telescopic boom body, the lubricating structure comprises two fixing frames, the surfaces of the two fixing frames are fixedly connected with the telescopic boom body, and the telescopic boom body is fixedly connected with the telescopic boom body. The surfaces of the two fixing frames are both slidably sleeved with rectangular plates, square boxes are fixedly installed on the surfaces of the two rectangular plates, lubricating holes are formed in the surfaces of the square boxes, limiting rods are slidably inserted into the square boxes, clamping plates are fixedly installed on the surfaces of the limiting rods, and blocking balls are fixedly installed on the surfaces of the clamping plates. The arc surface of the limiting rod is sleeved with a spring. According to the utility model, the defect that in the prior art, when the telescopic boom of the crane is disassembled and assembled, a worker is difficult to disassemble and assemble the telescopic boom of the crane due to large friction force in the telescopic boom of the crane is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic boom of cranes, in particular to a detachable telescopic boom of a crane. Background Art

[0002] The telescopic boom of a crane is an important part of the crane, mainly used for lifting and moving heavy objects in the vertical and horizontal directions. The design and function of the telescopic boom directly affect the operating performance and flexibility of the crane. With the development of society, there are more and more types of telescopic booms of cranes.

[0003] Regarding the above and existing related technologies, the inventor believes that there are often the following defects: when disassembling and assembling the telescopic boom of a crane, due to the large friction force between the inside of the telescopic boom of the crane, it is difficult for the staff to disassemble and assemble the telescopic boom of the crane, reducing the work efficiency.

[0004] Therefore, the utility model provides a detachable telescopic boom of a crane. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defect that when disassembling and assembling the telescopic boom of a crane in the prior art, due to the large friction force between the inside of the telescopic boom of the crane, it is difficult for the staff to disassemble and assemble the telescopic boom of the crane, and a detachable telescopic boom of a crane is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a detachable telescopic boom of a crane, including a telescopic boom body, a lubrication structure is arranged on the surface of the telescopic boom body, the lubrication structure includes two fixing frames, the surfaces of the two fixing frames are fixedly connected with the telescopic boom body, rectangular plates are slidably sleeved on the surfaces of the two fixing frames, a square box is fixedly installed on the surfaces of the two rectangular plates, a lubrication hole is opened on the surface of the square box, a limiting rod is slidably inserted into the square box, a clamping plate is fixedly installed on the surface of the limiting rod, a blocking ball is fixedly installed on the surface of the clamping plate, a spring is sleeved on the arc surface of the limiting rod, and the two ends of the spring are fixedly connected with the clamping plate and the square box respectively.

[0007] The effect achieved by the above components is that by setting the lubrication structure, the telescopic boom can be lubricated when disassembling and assembling the telescopic boom, reducing the friction force between the telescopic booms, so as to facilitate the staff to disassemble and assemble the telescopic boom and improve the work efficiency.

[0008] Preferably, an installation frame is fixedly installed at one end of the limiting rod away from the clamping plate.

[0009] The effect achieved by the above components is that the limiting rod can be moved by means of the installation frame.

[0010] Preferably, a protective sleeve is sleeved on the surface of the spring, and both ends of the protective sleeve are fixedly connected to the square box and the clamping plate respectively.

[0011] The effect achieved by the above components is that the protective sleeve can protect the spring.

[0012] Preferably, elastic sleeves are slidably sleeved on the surfaces of the two fixing frames, sleeves are fixedly installed on the surfaces of the elastic sleeves, and the surfaces of the sleeves are fixedly connected to the rectangular plate.

[0013] The effect achieved by the above components is that the elastic sleeves and the sleeves can increase the friction between the rectangular plate and the fixing frames.

[0014] Preferably, a sealing sleeve is fixedly installed on the inner wall of the lubricating hole.

[0015] The effect achieved by the above components is that the sealing sleeve can reduce the gap between the blocking ball and the lubricating hole.

[0016] Preferably, limiting holes are formed in the surfaces of the two fixing frames, a rotating plate is rotatably connected to the inner wall of each limiting hole, a clamping pad is fixedly installed on the inner wall of each limiting hole, the clamping pad is an elastic pad, and the surface of the clamping pad abuts against the rotating plate.

[0017] The effect achieved by the above components is that after the rotating plate is rotated, the rotating plate can block the rectangular plate, so that the rectangular plate cannot slide out of the surface of the fixing frame.

[0018] Preferably, a shielding structure is provided on the surface of the square box. The shielding structure includes three balance frames, the surfaces of the three balance frames are fixedly connected to the square box, two limiting plates are provided on the surface of the square box, a fixing cylinder is fixedly installed on the surface of each limiting plate, the inner wall of the fixing cylinder is slidably connected to the balance frame, and elastic cloth is fixedly installed on the outer surfaces of the two fixing cylinders.

[0019] The effect achieved by the above components is that by providing the shielding structure, the upper part of the square box can be shielded, so that sundries are not likely to fall into the square box.

[0020] Preferably, magnets are fixedly sleeved on the surfaces of the three balance frames, and the two fixing cylinders are both iron cylinders.

[0021] The effect achieved by the above components is that the magnets can use magnetic force to adsorb the fixing cylinders, so that the fixing cylinders are fixed on the balance frames.

[0022] In summary:

[0023] 1. In the present utility model, when it is necessary to disassemble and assemble the telescopic arm, the mounting frame is pulled upward. While the mounting frame slides, it drives the limit rod to slide. While the limit rod slides, it drives the clamping plate to slide. While the clamping plate slides, it drives the plugging ball to slide. After the plugging ball slides a certain distance, the plugging ball no longer plugs the lubricating hole. At this time, the lubricating oil can flow along the lubricating hole to the telescopic arm. At this time, the friction between the telescopic arms can be reduced. By setting the lubricating structure, the telescopic arm can be lubricated when disassembling and assembling the telescopic arm, reducing the friction between the telescopic arms, thereby facilitating the staff to disassemble and assemble the telescopic arm and improving the work efficiency.

[0024] 2. In the present utility model, after using the lubricating structure, the two fixing cylinders are respectively sleeved on the two balance frames at the upper end of the square box. At this time, the magnet can use magnetic force to adsorb the fixing cylinder, so that the fixing cylinder is fixed on the balance frame. And at this time, the elastic cloth blocks the port of the square box, making it difficult for sundries to fall into the square box. By setting the shielding structure, the upper part of the square box can be shielded, making it difficult for sundries to fall into the square box. Brief Description of the Drawings

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0026] Figure 2 is of the present utility model Figure 1 partial structural schematic diagram;

[0027] Figure 3 is of the present utility model Figure 2 side view structural schematic diagram;

[0028] Figure 4 is of the present utility model Figure 3 disassembly structural schematic diagram;

[0029] Figure 5 is of the present utility model Figure 4 enlarged view at A;

[0030] Figure 6 is of the present utility model Figure 4 enlarged view at B.

[0031] Legend Explanation: 1. Telescopic arm body; 2. Lubricating structure; 201. Fixed frame; 202. Rectangular plate; 203. Mounting frame; 204. Limit rod; 205. Sleeve; 206. Elastic sleeve; 207. Protective sleeve; 208. Clamping plate; 209. Lubricating hole; 210. Rotating plate; 211. Sealing sleeve; 212. Plugging ball; 213. Square box; 214. Limit hole; 215. Card pad; 216. Spring; 3. Shielding structure; 31. Balance frame; 32. Magnet; 33. Fixing cylinder; 34. Limit plate; 35. Elastic cloth. Detailed Description of the Embodiment

[0032] Referring to Figure 1 as shown, the present utility model provides a technical solution: a detachable telescopic boom of a crane, including a telescopic boom body 1 and a square box 213. A lubrication structure 2 is provided on the surface of the telescopic boom body 1. By setting the lubrication structure 2, the telescopic boom can be lubricated when disassembling and assembling the telescopic boom, reducing the friction between the telescopic booms, thus facilitating the staff to disassemble and assemble the telescopic boom and improving work efficiency. A shielding structure 3 is provided on the surface of the square box 213. By setting the shielding structure 3, the upper part of the square box 213 can be shielded, so that sundries are not likely to fall into the square box 213.

[0033] Specifically, the specific settings and functions of its lubrication structure 2 and shielding structure 3 will be described below.

[0034] Referring to Figure 2 、 Figure 3 and Figure 6 as shown, in this embodiment: The lubrication structure 2 includes two fixing frames 201. The surfaces of both fixing frames 201 are fixedly connected to the telescopic boom body 1. Rectangular plates 202 are slidably sleeved on the surfaces of both fixing frames 201. A square box 213 is fixedly installed on the surfaces of both rectangular plates 202. A lubrication hole 209 is opened on the surface of the square box 213. A limiting rod 204 is slidably inserted into the interior of the square box 213. A clamping plate 208 is fixedly installed on the surface of the limiting rod 204. A blocking ball 212 is fixedly installed on the surface of the clamping plate 208. A spring 216 is sleeved on the arc surface of the limiting rod 204. The two ends of the spring 216 are respectively fixedly connected to the clamping plate 208 and the square box 213. An installation frame 203 is fixedly installed at one end of the limiting rod 204 away from the clamping plate 208. The limiting rod 204 can be moved by means of the installation frame 203. A protective sleeve 207 is sleeved on the surface of the spring 216. The two ends of the protective sleeve 207 are respectively fixedly connected to the square box 213 and the clamping plate 208. The protective sleeve 207 can protect the spring 216. Elastic sleeves 206 are slidably sleeved on the surfaces of both fixing frames 201. A sleeve 205 is fixedly installed on the surface of the elastic sleeve 206. The surface of the sleeve 205 is fixedly connected to the rectangular plate 202. The elastic sleeve 206 and the sleeve 205 can increase the friction between the rectangular plate 202 and the fixing frame 201. A sealing sleeve 211 is fixedly installed on the inner wall of the lubrication hole 209. The sealing sleeve 211 can reduce the gap between the blocking ball 212 and the lubrication hole 209. Limiting holes 214 are opened on the surfaces of both fixing frames 201. A rotating plate 210 is rotatably connected to the inner wall of the limiting hole 214. A clamping pad 215 is fixedly installed on the inner wall of the limiting hole 214. The clamping pad 215 is an elastic pad. The surface of the clamping pad 215 abuts against the rotating plate 210. After rotating the rotating plate 210, the rotating plate 210 can shield the rectangular plate 202, so that the rectangular plate 202 cannot slide out of the surface of the fixing frame 201.

[0035] Referring to Figure 4and Figure 5 As shown in Figure 5 , specifically, the shielding structure 3 includes three balance frames 31. The surfaces of the three balance frames 31 are fixedly connected to the square box 213. There are two limit plates 34 on the surface of the square box 213. A fixed cylinder 33 is fixedly installed on the surface of the limit plate 34. The inner wall of the fixed cylinder 33 is slidably connected to the balance frame 31. An elastic cloth 35 is fixedly installed on the outer surfaces of the two fixed cylinders 33. Magnets 32 are fixedly sleeved on the surfaces of the three balance frames 31. The two fixed cylinders 33 are both iron cylinders. The magnets 32 can use magnetic force to adsorb the fixed cylinders 33, so that the fixed cylinders 33 are fixed on the balance frames 31.

[0036] Working principle: When disassembling and assembling the telescopic arm, first pour lubricating oil into the square box 213, and then slide the rectangular plate 202. The rectangular plate 202 slides along the fixed frame 201 to the required position. At this time, the square box 213 is also at the required position. Then pull up the mounting frame 203. When the mounting frame 203 slides, it drives the limit rod 204 to slide. When the limit rod 204 slides, it drives the clamping plate 208 to slide. When the clamping plate 208 slides, it drives the blocking ball 212 to slide. After the blocking ball 212 slides a certain distance, the blocking ball 212 no longer blocks the lubricating hole 209. At this time, the lubricating oil can flow along the lubricating hole 209 to the telescopic arm. At this time, the friction between the telescopic arms can be reduced. By setting the lubricating structure 2, the telescopic arm can be lubricated when disassembling and assembling the telescopic arm, and the friction between the telescopic arms can be reduced, so as to facilitate the staff to disassemble and assemble the telescopic arm and improve work efficiency.

[0037] After using the lubricating structure 2, the two fixed cylinders 33 are respectively sleeved on the two balance frames 31 at the upper end of the square box 213. At this time, the magnets 32 can use magnetic force to adsorb the fixed cylinders 33, so that the fixed cylinders 33 are fixed on the balance frames 31. And at this time, the elastic cloth 35 shields the port of the square box 213, so that sundries are not easy to fall into the square box 213. By setting the shielding structure 3, the upper part of the square box 213 can be shielded, so that sundries are not easy to fall into the square box 213.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

Claims

1. A detachable telescopic boom of a crane, comprising a telescopic boom body (1), characterized in that: The surface of the telescopic arm body (1) is provided with a lubrication structure (2). The lubrication structure (2) includes two fixing frames (201). The surfaces of the two fixing frames (201) are fixedly connected to the telescopic arm body (1). Rectangular plates (202) are slidably sleeved on the surfaces of the two fixing frames (201). A square box (213) is fixedly installed on the surfaces of the two rectangular plates (202). Lubrication holes (209) are formed in the surface of the square box (213). A limiting rod (204) is slidably inserted into the interior of the square box (213). A clamping plate (208) is fixedly installed on the surface of the limiting rod (204). A blocking ball (212) is fixedly installed on the surface of the clamping plate (208). A spring (216) is sleeved on the arc surface of the limiting rod (204). The two ends of the spring (216) are fixedly connected to the clamping plate (208) and the square box (213) respectively.

2. The detachable telescopic boom of a crane according to claim 1, wherein: An installation frame (203) is fixedly installed at one end of the limiting rod (204) away from the clamping plate (208).

3. A detachable telescopic boom of a crane according to claim 1, characterized in that: A protective sleeve (207) is sleeved on the surface of the spring (216). The two ends of the protective sleeve (207) are fixedly connected to the square box (213) and the clamping plate (208) respectively.

4. A detachable telescopic boom of a crane according to claim 1, wherein: Elastic sleeves (206) are slidably sleeved on the surfaces of the two fixing frames (201). A sleeve (205) is fixedly installed on the surface of the elastic sleeve (206). The surface of the sleeve (205) is fixedly connected to the rectangular plate (202).

5. A detachable telescopic boom of a crane according to claim 1, characterized in that: A sealing sleeve (211) is fixedly installed on the inner wall of the lubrication hole (209).

6. A detachable telescopic boom of a crane according to claim 1, characterized in that: Limiting holes (214) are formed in the surfaces of the two fixing frames (201). A rotating plate (210) is rotatably connected to the inner wall of the limiting hole (214). A clamping pad (215) is fixedly installed on the inner wall of the limiting hole (214). The clamping pad (215) is an elastic pad. The surface of the clamping pad (215) abuts against the rotating plate (210).

7. A detachable telescopic boom of a crane according to claim 1, characterized in that: A shielding structure (3) is provided on the surface of the square box (213). The shielding structure (3) includes three balance frames (31). The surfaces of the three balance frames (31) are fixedly connected to the square box (213). Two limiting plates (34) are provided on the surface of the square box (213). A fixed cylinder (33) is fixedly installed on the surface of the limiting plate (34). The inner wall of the fixed cylinder (33) is slidably connected to the balance frame (31). An elastic cloth (35) is fixedly installed on the outer surfaces of the two fixed cylinders (33).

8. The detachable telescopic boom of a crane according to claim 7, wherein: Magnets (32) are fixedly sleeved on the surfaces of the three balance frames (31). The two fixed cylinders (33) are both iron cylinders.

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