A boom clearance compensation device

Abstract

The present invention discloses a boom gap compensation device, which comprises an adjustment block, a push block and a slider arranged at the tail of the inner boom and located in the gap between the inner boom and the outer boom; the push block is movably arranged on the outer wall of the top of the inner boom, the adjustment block is arranged on the inner side of the push block, and the slider is arranged on the outer side of the push block; when the adjustment block approaches the outer wall of the top of the inner boom, the adjustment block pushes the push block to move outward on the outer wall of the top of the inner boom, so that the push block pushes the slider to contact the inner wall of the top of the outer boom. The device is easy to operate, and after the slider is worn, it is not necessary to disassemble the slider and replace it with a new one every time, which saves costs.

Description

Technical Field

[0001] The invention relates to the field of telescopic booms, in particular to a boom gap compensation device. Background Art

[0002] The existing telescopic boom includes an inner boom and an outer boom. The inner boom is inserted into the outer boom and can be extended and retracted inside the outer boom. Since there is a gap between the outer wall of the inner boom and the inner wall of the outer boom, the tail of the inner boom will tilt upward during operation. Especially when a heavier operating mechanism is provided at the front end of the inner boom, the rear end of the inner boom is more likely to tilt inside the outer boom, which will cause the top outer wall of the tail of the inner boom to contact the top inner wall of the outer boom, thereby causing wear and tear, resulting in damage to the equipment and affecting the telescopic effect of the boom. In order to solve this problem, the methods currently adopted are as follows: Figure 1 As shown, a mounting groove is provided on the top outer wall of the tail of the inner arm, and then a slider is arranged in the mounting groove; the hardness of the slider is less than that of the inner and outer arms, so when the tail of the inner arm is tilted, the slider is in contact with the inner wall of the top of the outer wall frame to avoid the inner and outer arms directly contacting and wearing each other. During the working process, the slider will wear out. When the slider is worn, the gap between the slider and the inner wall of the outer arm increases, and the slider needs to be replaced. In the existing replacement process, the inner and outer arms are often removed, and then the worn slider is removed, and then a new slider is installed. This process is cumbersome to operate and has high equipment maintenance costs. Summary of the invention

[0003] The purpose of the present invention is to provide an arm clearance compensation device in view of the above-mentioned problems. The device is easy to operate and does not need to be disassembled and replaced with a new one every time the slider is worn, thus saving costs.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A boom gap compensation device comprises an adjustment block, a push block and a slide block arranged at the tail of the inner boom and located in the gap between the inner boom and the outer boom;

[0006] The pushing block is movably arranged on the outer wall of the top of the inner arm frame, the adjusting block is arranged on the inner side of the pushing block, and the sliding block is arranged on the outer side of the pushing block; when the adjusting block is close to the outer wall of the top of the inner arm frame, the adjusting block pushes the pushing block to move outward on the outer wall of the top of the inner arm frame, so that the pushing block pushes the sliding block to contact the inner wall of the top of the outer arm frame.

[0007] Due to the above structure, when the slider is worn, the gap between the slider and the inner wall of the outer arm increases. It is not necessary to disassemble the slider. The slider can be directly pushed to move by adjusting the position of the adjustment block to compensate for the gap between the slider and the inner wall of the outer arm, so that the slider is always in contact with the inner wall of the outer arm. This method is simple to operate, avoids the disassembly and installation of the slider, and has high operating efficiency. At the same time, the same slider can be used multiple times until it is completely worn. Unlike the prior art, it is not necessary to replace the slider every time it is worn, which saves costs.

[0008] Furthermore, the adjusting block is connected to the outer wall of the top of the inner arm frame through an adjusting bolt; tightening the adjusting bolt causes the adjusting block to approach the outer wall of the top of the inner arm frame, so that the adjusting block pushes the pushing block to move outward.

[0009] Due to the above structure, the gap between the slider and the inner wall of the outer arm frame can be easily adjusted by adjusting the bolt, so that the slider is always in contact with the inner wall of the outer arm frame, ensuring the normal operation of the arm frame.

[0010] Furthermore, the pushing block includes a left pushing block and a right pushing block, and the sliding block includes a left sliding block and a right sliding block; the adjusting block is located on the inner side of the left pushing block and the right pushing block, the left sliding block is located on the outer side of the left pushing block, and the right sliding block is located on the outer side of the right pushing block; tightening the adjusting bolt, the adjusting block approaches the outer wall of the top of the inner arm frame, and the adjusting block pushes the left pushing block and the right pushing block to move outward on the outer wall of the top of the inner arm frame at the same time, so that the left pushing block and the right pushing block respectively push the left sliding block and the right sliding block to contact the inner wall of the top of the outer arm frame.

[0011] Due to the above structure, the left push block and the right push block move symmetrically, and the sliders are symmetrically arranged on both sides, which can ensure the uniformity and symmetry of the gap between the slider and the inner wall of the outer arm frame, thereby ensuring the stability of the equipment during operation.

[0012] Furthermore, the outward moving direction of the pushing block is perpendicular to the length direction of the inner arm.

[0013] Furthermore, the inner surface and the outer surface of the pushing block are both inclined, so that the pushing block presents a structure that is small at the top and large at the bottom;

[0014] The side surface of the adjusting block is tilted so that the adjusting block presents a structure of being larger at the top and smaller at the bottom;

[0015] The side surface of the adjusting block contacts the inner surface of the pushing block, and when the adjusting block approaches the outer wall of the inner arm support, the side surface of the adjusting block and the inner surface of the pushing block can move relative to each other;

[0016] The slider is arranged at an angle, and the bottom surface of the slider contacts the outer surface of the pushing block. When the pushing block moves outward, the outer surface of the pushing block and the bottom surface of the slider can move relative to each other, and the pushing block pushes the slider so that the top surface of the slider contacts the inner wall of the top of the outer arm.

[0017] Due to the above structure, the movement direction of each component is controlled by the cooperation of each inclined surface, so that the slider can move obliquely upward, simplifying the structure. It does not need complex transmission mechanisms such as gears and screws to make each component move in different directions.

[0018] Furthermore, a guide limit block is provided on the outer wall of the top of the inner arm support, and the guide limit block is provided on the outer side of the push block;

[0019] The guide limit block comprises an inclined guide surface, and the lower surface of the sliding block contacts the guide surface and can move relative to the guide surface;

[0020] When the push block moves outward, the lower surface of the slider moves along the guide surface, causing the slider to move toward the top of the outer arm frame, so that the top surface of the slider contacts the inner wall of the top of the outer arm frame;

[0021] When the pushing block moves outward to the limit position, the outer side of the pushing block abuts against the guide limit block.

[0022] Due to the above structure and the existence of the guide limit block, the slider can be conveniently guided to a specified position, while also limiting the maximum displacement of the push block, thereby ensuring stable and reliable operation.

[0023] Furthermore, a limiting notch is provided at the bottom of the pushing block, and the limiting notch is located on the outside of the pushing block. When the pushing block moves outward to the limit position, the guide limiting block is embedded in the limiting notch.

[0024] Due to the above structure, the guide limit block is embedded in the limit notch, which can make the entire device more compact in a narrow gap space and at the same time improve the working stability of the device.

[0025] Furthermore, a guide groove is provided on the outer wall of the inner arm, and the extension direction of the guide groove is perpendicular to the length direction of the inner arm; the pushing block is placed in the guide groove, and the pushing block moves outward along the guide groove; or a baffle is provided on the outer wall of the inner arm, and the baffle is located in front and behind the pushing block, and the extension direction of the baffle is perpendicular to the length direction of the inner arm; the pushing block moves outward along the baffle.

[0026] Due to the existence of the guide groove or the baffle, the stability and accuracy of the movement of the push block can be guaranteed, and the stability of the gap adjustment can be further guaranteed.

[0027] Furthermore, an adjustment opening is provided on the outer arm frame, and when the inner arm frame is completely retracted into the outer arm frame, the adjustment screw is located at the adjustment opening.

[0028] Due to the above structure, when the gap between the slider and the inner wall of the outer arm frame needs to be adjusted, it is only necessary to insert a screwdriver into the adjustment port and tighten the adjustment bolt without disassembling the entire inner and outer arm frames, which is convenient to operate.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] The new gap compensation device is easy to operate. When adjusting the gap between the slider and the inner wall of the outer arm, it is not necessary to disassemble the arm or replace the slider, so that one slider can be used repeatedly, avoiding frequent replacement of the slider and saving costs. At the same time, since the gap between the slider and the inner wall of the outer arm is adjustable, it can be used to control the deflection and elevation value during the debugging of the whole arm, so that the pre-camber can be set to resist the deformation of the arm during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a prior art structure diagram;

[0032] Figure 2 It is a structural diagram of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] A boom gap compensation device, comprising an adjustment block 6, a push block 7 and a slide block 3 arranged at the tail of an inner boom 1 and located in the gap between the inner boom 1 and the outer boom 2;

[0036] The pushing block 7 is movably arranged on the top outer wall of the inner arm frame 1, the adjusting block 6 is arranged on the inner side of the pushing block 7, and the sliding block 3 is arranged on the outer side of the pushing block 7; when the adjusting block 6 is close to the top outer wall of the inner arm frame 1, the adjusting block 6 pushes the pushing block 7 to move outward on the top outer wall of the inner arm frame 1, so that the pushing block 7 pushes the sliding block 3 to contact the top inner wall of the outer arm frame 2.

[0037] The adjusting block 6 is connected to the top outer wall of the inner arm frame 1 through the adjusting bolt 5; tightening the adjusting bolt 5 makes the adjusting block 6 approach the top outer wall of the inner arm frame 1, so that the adjusting block 6 pushes the pushing block 7 to move outward.

[0038] The pushing block 7 includes a left pushing block 7 and a right pushing block 7, and the sliding block 3 includes a left sliding block 3 and a right sliding block 3; the adjusting block 6 is located on the inner side of the left pushing block 7 and the right pushing block 7, the left sliding block 3 is located on the outer side of the left pushing block 7, and the right sliding block 3 is located on the outer side of the right pushing block 7; tighten the adjusting bolt 5, the adjusting block 6 approaches the outer wall of the top of the inner arm frame 1, and the adjusting block 6 pushes the left pushing block 7 and the right pushing block 7 to move outward on the outer wall of the top of the inner arm frame 1 at the same time, so that the left pushing block 7 and the right pushing block 7 respectively push the left sliding block 3 and the right sliding block 3 to contact the inner wall of the top of the outer arm frame 2.

[0039] like Figure 2 As shown, the left pushing block 7 and the right pushing block 7 are arranged on opposite sides of the adjusting block 6, and the left sliding block 3 and the right sliding block 3 are also arranged on opposite sides of each other, and are respectively arranged on the outside of the left pushing block 7 and the right pushing block 7; when the adjusting block 6 moves downward, that is, approaches the outer wall of the top of the inner arm frame 1, the left pushing block 7 and the right pushing block 7, and the left sliding block 3 and the right sliding block 3 move outward on opposite sides.

[0040] The outward moving direction of the pushing block 7 is perpendicular to the length direction of the inner arm frame 1 .

[0041] The inner and outer surfaces of the push block 7 are both inclined, so that the push block 7 presents a structure that is small at the top and large at the bottom; Figure 2 As shown, the pushing block 7 is in a "triangular" or "trapezoidal" structure;

[0042] The side of the adjusting block 6 is tilted so that the adjusting block 6 has a structure that is larger at the top and smaller at the bottom; Figure 2 As shown, the adjustment block 6 has an "inverted trapezoidal" structure;

[0043] The side surface of the adjusting block 6 is in contact with the inner surface of the pushing block 7. When the adjusting block 6 approaches the outer wall of the inner arm 1, the side surface of the adjusting block 6 and the inner surface of the pushing block 7 can move relative to each other.

[0044] The slider 3 is tilted, and the bottom surface of the slider 3 contacts the outer surface of the push block 7. When the push block 7 moves outward, the outer surface of the push block 7 and the bottom surface of the slider 3 can move relative to each other, and the push block 7 pushes the slider 3, so that the top surface of the slider 3 contacts the inner wall of the top of the outer arm 2. Figure 2 As shown, the slider 3 moves obliquely upward and abuts against the top corner of the outer wall frame, that is, the top surface of the slider 3 contacts the inner wall portion of the top of the outer arm frame 2.

[0045] Due to the above structure, the "inverted trapezoidal" structure of the adjusting block 6 cooperates with the "triangular" or "trapezoidal" structure of the pushing block 7, so that the movement directions of the adjusting block 6 and the pushing block 7 are not in the same direction.

[0046] The "triangle" or "trapezoidal structure" of the push block 7 cooperates with the slider 3, so that the movement directions of the push block 7 and the slider 3 are not in the same direction; the movement directions of each component are changed through simple geometric relationships without the need to use complex transmission mechanisms such as gears and screws, making the structure of the present invention simpler.

[0047] A guide limit block is provided on the top outer wall of the inner arm frame 1, and the guide limit block is provided on the outer side of the push block 7;

[0048] The guide limit block comprises an inclined guide surface, and the lower surface of the slider 3 contacts the guide surface and can move relative to it;

[0049] When the push block 7 moves outward, the lower surface of the slider 3 moves along the guide surface, so that the slider 3 moves toward the top of the outer arm frame 2, so that the top surface of the slider 3 contacts the inner wall of the top of the outer arm frame 2;

[0050] When the push block 7 moves outward to the limit position, the outer side of the push block 7 abuts against the guide limit block. Figure 2 As shown, the guide limit blocks are arranged on the left and right sides of the inner wall frame. At the same time, due to the existence of the guide surface, the slider 3 can be better slid upward obliquely and then abut against the top inner wall between the outer walls.

[0051] A limiting notch is provided at the bottom of the pushing block 7, and the limiting notch is located on the outside of the pushing block 7. When the pushing block 7 moves outward to the limit position, the guide limiting block is embedded in the limiting notch.

[0052] like Figure 2 As shown, the limiting notch includes an inclined limiting surface, and is connected to the outer surface of the push block 7. When the guide limiting block is embedded in the limiting notch, the guide surface of the guide limiting block contacts and overlaps with the limiting surface.

[0053] A guide groove is provided on the outer wall of the inner arm frame 1, and the extension direction of the guide groove is perpendicular to the length direction of the inner arm frame 1; the pushing block 7 is placed in the guide groove, and the pushing block 7 moves outward along the guide groove; or a baffle is provided on the outer wall of the inner arm frame 1, and the baffle is located in front of and behind the pushing block 7, and the extension direction of the baffle is perpendicular to the length direction of the inner arm frame 1; the pushing block 7 moves outward along the baffle.

[0054] The outer arm frame 2 is provided with an adjustment opening 4, and when the inner arm frame 1 is completely retracted into the outer arm frame 2, the adjustment screw is located at the adjustment opening 4. A detachable cover can be provided at the adjustment opening 4, and when the slider 3 needs to be adjusted, the cover is removed, and a screwdriver is inserted into the adjustment opening 4 to tighten the adjustment bolt 5.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A boom gap compensation device, characterized in that: It comprises an adjusting block (6), a pushing block (7) and a sliding block (3) which are arranged at the tail of the inner arm frame (1) and located in the gap between the inner arm frame (1) and the outer arm frame (2); The pushing block (7) is movably arranged on the top outer wall of the inner arm frame (1), the adjusting block (6) is arranged on the inner side of the pushing block (7), and the sliding block (3) is arranged on the outer side of the pushing block (7); when the adjusting block (6) approaches the top outer wall of the inner arm frame (1), the adjusting block (6) pushes the pushing block (7) to move outward on the top outer wall of the inner arm frame (1), so that the pushing block (7) pushes the sliding block (3) to contact the top inner wall of the outer arm frame (2); The inner surface and the outer surface of the pushing block (7) are both arranged to be inclined, so that the pushing block (7) presents a structure that is small at the top and large at the bottom; The side surface of the adjusting block (6) is arranged to be inclined, so that the adjusting block (6) presents a structure that is larger at the top and smaller at the bottom; The side surface of the adjusting block (6) contacts the inner surface of the pushing block (7).

2. The arm clearance compensation device according to claim 1, characterized in that: The adjusting block (6) is connected to the top outer wall of the inner arm frame (1) via an adjusting bolt (5); the adjusting bolt (5) is tightened to move the adjusting block (6) closer to the top outer wall of the inner arm frame (1), so that the adjusting block (6) pushes the pushing block (7) to move outward.

3. The arm clearance compensation device according to claim 2, characterized in that: The pushing block (7) comprises a left pushing block (7) and a right pushing block (7), and the sliding block (3) comprises a left sliding block (3) and a right sliding block (3); the adjusting block (6) is located on the inner side of the left pushing block (7) and the right pushing block (7), the left sliding block (3) is located on the outer side of the left pushing block (7), and the right sliding block (3) is located on the outer side of the right pushing block (7); when the adjusting bolt (5) is tightened, the adjusting block (6) approaches the outer wall of the top of the inner arm frame (1), and the adjusting block (6) pushes the left pushing block (7) and the right pushing block (7) to move outward on the outer wall of the top of the inner arm frame (1) at the same time, so that the left pushing block (7) and the right pushing block (7) respectively push the left sliding block (3) and the right sliding block (3) to contact the inner wall of the top of the outer arm frame (2).

4. The arm clearance compensation device according to claim 3, characterized in that: The outward moving direction of the pushing block (7) is perpendicular to the length direction of the inner arm frame (1).

5. The arm clearance compensation device according to claim 4, characterized in that: When the adjusting block (6) approaches the outer wall of the inner arm frame (1), the side surface of the adjusting block (6) and the inner surface of the pushing block (7) can move relative to each other; The slider (3) is arranged at an angle, and the bottom surface of the slider (3) contacts the outer surface of the push block (7). When the push block (7) moves outward, the outer surface of the push block (7) and the bottom surface of the slider (3) can move relative to each other, and the push block (7) pushes the slider (3) so that the top surface of the slider (3) contacts the inner wall of the top of the outer arm (2).

6. The arm clearance compensation device according to claim 5, characterized in that: A guide limit block is provided on the top outer wall of the inner arm frame (1), and the guide limit block is provided on the outer side of the push block (7); The guide limit block comprises a guide surface which is arranged obliquely, and the lower surface of the sliding block (3) is in contact with the guide surface and can move relative to it; When the push block (7) moves outward, the lower surface of the slider (3) moves along the guide surface, so that the slider (3) moves toward the top of the outer arm frame (2), so that the top surface of the slider (3) contacts the inner wall of the top of the outer arm frame (2); When the pushing block (7) moves outward to the extreme position, the outer side of the pushing block (7) abuts against the guide limit block.

7. The arm clearance compensation device according to claim 6, characterized in that: A limiting notch is provided at the bottom of the pushing block (7), the limiting notch being located outside the pushing block (7), and when the pushing block (7) moves outward to an extreme position, the guide limiting block is embedded in the limiting notch.

8. The arm clearance compensation device according to claim 1, characterized in that: A guide groove is provided on the outer wall of the inner arm frame (1), and the extension direction of the guide groove is perpendicular to the length direction of the inner arm frame (1); the push block (7) is placed in the guide groove, and the push block (7) moves outward along the guide groove; Or a baffle is provided on the outer wall of the inner arm frame (1), the baffle is located in front of and behind the push block (7), and the extension direction of the baffle is perpendicular to the length direction of the inner arm frame (1); the push block (7) moves outward along the baffle.

9. The boom gap compensation device according to claim 2, characterized in that: The outer arm frame (2) is provided with an adjustment opening (4), and when the inner arm frame (1) is completely retracted into the outer arm frame (2), the adjustment bolt (5) is located at the adjustment opening (4).

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