A sliding block device for crane telescopic arm

Abstract

The utility model discloses a slider device for a telescopic arm of a crane, and relates to the technical field of cranes. The utility model comprises a telescopic arm 1, wherein a telescopic arm 2 is arranged inside the telescopic arm 1, sliders are arranged on four sides of the inner wall of the telescopic arm 1, and the parts contained in the four sliders are the same, and adjustment components are arranged on four sides of the outer side of the telescopic arm 1, and the parts contained in the four adjustment components are the same. The utility model sets an adjustment component, specifically, a staff member uses a hexagonal wrench to drive the threaded rod to rotate through the hexagonal block, then the lifting column will drive the vertical rod to move together through the limit rod, and then the four-corner plug blocks will drive the slider to move, so that the position of the slider can be adjusted, and the four positions can be adjusted separately in the same way to control the accuracy and tightness between the telescopic arm 2 and the telescopic arm 1. When a large amount of wear occurs after long-term use, the distance between the sliders can be adjusted again to make the slider contact with the telescopic arm 2, thereby improving the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and particularly relates to a slider device for a telescopic arm of a crane. Background Art

[0002] Crane refers to a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called overhead crane, overhead crane, and crane. The slider is an important part of the crane arm.

[0003] The slider on the existing crane telescopic arm is usually fixed, which does not have the adjustment function and cannot adjust the tightness of the telescopic arm. Due to the wear of the slider to varying degrees over a long period of use, the telescopic arm is prone to loosening, affecting the use of the crane and posing a safety hazard. Therefore, we propose a slider device for a crane telescopic arm. Utility Model Content

[0004] The purpose of the utility model is to provide a slider device for a telescopic arm of a crane. By setting an adjustment component, the positions of four sliders can be adjusted separately, so that the accuracy and tightness between telescopic arm two and telescopic arm one can be controlled. When the slider is worn out after a long time of use, the distance between the sliders can be adjusted again to make the slider contact with telescopic arm two, thereby improving the service life. The problem of the slider not having an adjustment function and the telescopic arm being easily loosened when worn solves the problem, which affects the use of the crane and poses a safety hazard.

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

[0006] The utility model is a slider device for a telescopic arm of a crane, comprising a telescopic arm 1, a telescopic arm 2 is arranged inside the telescopic arm 1, sliders are arranged on four sides of the inner wall of the telescopic arm 1, and the parts contained in the four sliders are the same, and adjustment components are arranged on four sides of the outer side of the telescopic arm 1, and the parts contained in the four adjustment components are the same;

[0007] The adjusting component includes a fixing cylinder, an outer surface of which is fixedly connected to the telescopic arm one, a circular slide groove is arranged inside the fixing cylinder, a lifting column is slidably connected to the inner wall of the circular slide groove, a threaded groove is arranged on the top of the lifting column, a threaded rod is threadedly connected to the inner wall of the threaded groove, and the positions of the four sliders can be adjusted separately by setting the adjusting component, so as to control the accuracy and tightness between the telescopic arm two and the telescopic arm one. When the sliders are greatly worn out due to long-term use, the distance between the sliders can be adjusted again to make the sliders contact with the telescopic arm two, thereby improving the service life.

[0008] Furthermore, a limiting groove is provided at the center of the top of the slider, and two slots are provided on the top of the slider. The two slots are symmetrically arranged with the limiting groove as the symmetry center. Two insertion holes are provided on the front of the slider. The slots and the insertion holes are interconnected. The slider is plugged into the lifting column and the limiting block through the limiting groove, and the slots are plugged into the four corner insertion blocks.

[0009] Furthermore, bolts are provided inside the two sockets, limiting sliding grooves are provided on the left and right sides of the fixing cylinder, limiting rods are fixedly connected to the left and right sides of the lifting column, and vertical rods are fixedly connected to the bottoms of the two limiting rods. The bolts are inserted into the sockets and then threadedly connected to the four corner blocks through the threaded holes to fix the slider to the four corner blocks, and the sliders are installed on the four positions in the same way.

[0010] Furthermore, the bottom of the two vertical rods are fixedly connected with four-corner plugs, and threaded holes are opened inside the two four-corner plugs. The bottom of the lifting column is fixedly connected with a limit block. By setting the four-corner plugs, when the slider needs to be disassembled, first rotate the hexagonal block to drive the slider away from the telescopic arm 2, and then remove the bolts to release the fixation of the slider and the four-corner plugs. Then, the slider can be pulled outward to be disassembled. The slider can be quickly replaced and will not affect sliders in other positions. The operation is more convenient and facilitates subsequent maintenance.

[0011] Furthermore, the top of the slider is plugged into the lifting column and the limiting block through a limit groove, the top of the slider is plugged into the two four-corner plug blocks through two slots, the bolt is threadedly connected to the four-corner plug blocks through threaded holes, the bottom of the lifting column passes through the fixed cylinder and extends to the outside, the lifting column is slidably connected to the fixed cylinder, the lifting column drives the slider to rise and fall, thereby adjusting the position of the slider, and the slider is fixed to the four-corner plug blocks to improve the overall rigidity and stability.

[0012] Furthermore, the outer surface of the limit rod contacts the inner wall of the limit slide groove opened in the fixed tube, the bottom of the vertical rod penetrates the telescopic arm 1 and extends to the inside, the vertical rod is slidably connected to the telescopic arm 1, the top of the threaded rod is fixedly connected with a hexagonal block, and the outer surface of the threaded rod is fixedly connected with two limit rings, the bottom of the limit ring located above contacts the top of the fixed tube, and the top of the limit ring located below contacts the top of the inner wall of the cavity opened in the fixed tube. The staff uses a hexagonal wrench to drive the hexagonal block to rotate, and the hexagonal block drives the threaded rod to rotate. Since the limit ring is fixed on the surface of the threaded rod, the threaded rod is limited on the fixed tube and can only rotate.

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

[0014] 1. The utility model sets an adjustment component. Specifically, the staff uses a hexagonal wrench to drive the threaded rod to rotate through the hexagonal block. The lifting column drives the vertical rod to move together through the limit rod, and the four-corner plug blocks drive the slider to move. The position of the slider can be adjusted. By adjusting the four positions separately in the same way, the accuracy and tightness between the telescopic arm two and the telescopic arm one can be controlled. When large wear occurs due to long-term use, the distance between the slider can be adjusted again to make the slider contact with the telescopic arm two, thereby improving the service life.

[0015] 2. The utility model is provided with four-corner plugs. Specifically, when the slider needs to be disassembled, the hexagonal block is first rotated to drive the slider away from the telescopic arm 2, and then the bolt is removed to release the fixation of the slider and the four-corner plugs. Subsequently, the slider can be pulled outward to be disassembled. The slider can be quickly replaced and will not affect sliders in other positions. The operation is more convenient and facilitates subsequent maintenance.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[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 right side cross-sectional structure of the fixing cylinder of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the fixed cylinder of the utility model;

[0021] Figure 4 This is a schematic diagram of the top structure of the slider of the utility model;

[0022] Figure 5 The figure is a schematic diagram of the overall structure of the utility model lifting column.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Telescopic arm 1; 11. Telescopic arm 2; 12. Slider; 121. Limiting groove; 122. Bolt; 123. Slot; 124. Socket; 13. Adjustment assembly; 131. Fixing cylinder; 132. Lifting column; 321. Limiting rod; 322. Vertical rod; 323. Four-corner plug; 324. Threaded hole; 325. Limiting block; 133. Threaded rod; 134. Hexagon socket block; 135. Limiting ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 As shown, the utility model is a slider device for a telescopic arm of a crane, comprising a telescopic arm 1, a telescopic arm 2 11 is arranged inside the telescopic arm 1, sliders 12 are arranged on four sides of the inner wall of the telescopic arm 1, and the four sliders 12 contain the same parts, and adjustment components 13 are arranged on four sides of the outer side of the telescopic arm 1, and the four adjustment components 13 contain the same parts;

[0027] The adjusting assembly 13 comprises a fixing cylinder 131, the outer surface of which is fixedly connected to the telescopic arm 1, a circular slide groove is arranged inside the fixing cylinder 131, a lifting column 132 is slidably connected to the inner wall of the circular slide groove, a threaded groove is arranged on the top of the lifting column 132, a threaded rod 133 is threadedly connected to the inner wall of the threaded groove, and the adjusting assembly 13 is arranged, specifically, the staff uses a hexagonal wrench to drive the threaded rod 133 to rotate through the hexagonal block 134, then the lifting column 132 will drive the vertical rod 322 to move together through the limit rod 321, and then the four-corner plug block 323 drives the slider 12 to move, so that the position of the slider 12 can be adjusted, and the four positions can be adjusted separately in the same way to control the accuracy and tightness between the telescopic arm 2 11 and the telescopic arm 1, and when large wear occurs due to long-term use, the distance of the slider 12 can be adjusted again to make the slider 12 contact with the telescopic arm 2 11, thereby improving the service life.

[0028] A limiting groove 121 is provided at the center of the top of the slider 12. Two slots 123 are provided at the top of the slider 12. The two slots 123 are symmetrically arranged with the limiting groove 121 as the symmetry center. Two insertion holes 124 are provided on the front of the slider 12. The slots 123 and the insertion holes 124 are interconnected.

[0029] Bolts 122 are provided inside the two sockets 124 , limiting grooves are provided on the left and right sides of the fixing tube 131 , limiting rods 321 are fixedly connected on the left and right sides of the lifting column 132 , and vertical rods 322 are fixedly connected at the bottom of the two limiting rods 321 .

[0030] The bottom of the two vertical rods 322 are fixedly connected with four-corner plug blocks 323, and threaded holes 324 are opened inside the two four-corner plug blocks 323. The bottom of the lifting column 132 is fixedly connected with a limit block 325. By setting the four-corner plug blocks 323, when it is necessary to disassemble the slider 12, first rotate the hexagonal block 134 to drive the slider 12 away from the telescopic arm 11, and then remove the bolt 122 to release the fixation of the slider 12 and the four-corner plug blocks 323. Then, the slider 12 can be pulled outward for disassembly, and the slider 12 can be quickly replaced without affecting the sliders 12 in other positions. The operation is more convenient and facilitates subsequent maintenance.

[0031] The top of the slider 12 is plugged into the lifting column 132 and the limiting block 325 through the limiting groove 121, the top of the slider 12 is plugged into the two four-corner plug blocks 323 through the two slots 123, the bolt 122 is threadedly connected to the four-corner plug blocks 323 through the threaded hole 324, the bottom of the lifting column 132 passes through the fixed tube 131 and extends to the outside, and the lifting column 132 is slidably connected to the fixed tube 131.

[0032] The outer surface of the limiting rod 321 contacts the inner wall of the limiting groove opened in the fixed tube 131, the bottom of the vertical rod 322 passes through the telescopic arm 1 and extends to the inside, the vertical rod 322 is slidably connected to the telescopic arm 1, the top of the threaded rod 133 is fixedly connected with a hexagonal block 134, and the outer surface of the threaded rod 133 is fixedly connected with two limiting rings 135, the bottom of the limiting ring 135 located at the top contacts the top of the fixed tube 131, and the top of the limiting ring 135 located at the bottom contacts the top of the inner wall of the cavity opened inside the fixed tube 131.

[0033] A specific application of this embodiment is:

[0034] When in use, the slider 12 is plugged into the lifting column 132 and the limiting block 325 through the limiting groove 121, and the slot 123 is plugged into the four-corner plug block 323 at the same time, and then the bolt 122 is inserted into the socket 124, and then the bolt 124 is threadedly connected with the four-corner plug block 323 through the threaded hole 324 to fix the slider 12 and the four-corner plug block 323. The slider 12 is installed at four positions in the same way. When the telescopic arm 2 11 is installed into the telescopic arm 1, the outer surface of the telescopic arm 2 11 will contact the surface of the slider 12. The staff uses a hexagonal wrench to drive the inner hexagon block 134 to rotate, and the inner hexagon block 134 drives the threaded rod 133 to rotate. Since the limiting ring 135 is fixed on the surface of the threaded rod 133, the threaded rod 133 is limited on the fixing tube 131 and can only rotate. Then the lifting column 132 will move up or down on the threaded rod 133, and the lifting column 132 will drive the vertical rod 322 to move together through the limit rod 321, and the vertical rod 322 will drive the slider 12 to move through the four-corner plug blocks 323, so that the position of the slider 12 can be adjusted. By adjusting the four positions in the same way, the accuracy and tightness between the telescopic arm 2 11 and the telescopic arm 1 1 can be controlled. When large wear occurs due to long-term use, the distance between the slider 12 can be adjusted again to make the slider 12 contact with the telescopic arm 2 11, thereby increasing the service life. When the slider 12 needs to be replaced, first rotate the hexagonal block 134 to drive the slider 12 away from the telescopic arm 2 11, and then remove the bolt 122 to release the fixation of the slider 12 and the four-corner plug blocks 323, and then pull the slider 12 outward to disassemble it. The slider 12 can be quickly replaced and will not affect the slider 12 in other positions. The operation is more convenient and facilitates subsequent maintenance.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A slider device for a telescopic arm of a crane, comprising a telescopic arm 1 (1), a telescopic arm 2 (11) being arranged inside the telescopic arm 1 (1), sliders (12) being arranged on four sides of the inner wall of the telescopic arm 1 (1), the parts contained in the four sliders (12) being the same, and characterized in that: The four outer sides of the telescopic arm (1) are all provided with adjustment components (13), and the parts contained in the four adjustment components (13) are the same; The adjustment assembly (13) comprises a fixed cylinder (131), the outer surface of which is fixedly connected to the telescopic arm (1), a circular slide groove is provided inside the fixed cylinder (131), a lifting column (132) is slidably connected to the inner wall of the circular slide groove, a threaded groove is provided at the top of the lifting column (132), and a threaded rod (133) is threadedly connected to the inner wall of the threaded groove.

2. A slider device for a crane telescopic arm according to claim 1, characterized in that: A limiting groove (121) is provided at the center of the top of the slider (12), two slots (123) are provided at the top of the slider (12), the two slots (123) are symmetrically arranged with the limiting groove (121) as the symmetry center, and two insertion holes (124) are provided on the front of the slider (12), and the slots (123) and the insertion holes (124) are interconnected.

3. A slider device for a crane telescopic arm according to claim 2, characterized in that: Bolts (122) are arranged inside the two insertion holes (124), limiting sliding grooves are provided on the left and right sides of the fixing cylinder (131), limiting rods (321) are fixedly connected to the left and right sides of the lifting column (132), and vertical rods (322) are fixedly connected to the bottoms of the two limiting rods (321).

4. A slider device for a crane telescopic arm according to claim 3, characterized in that: The bottoms of the two vertical rods (322) are fixedly connected with four-corner plug blocks (323), the insides of the two four-corner plug blocks (323) are provided with threaded holes (324), and the bottom of the lifting column (132) is fixedly connected with a limit block (325).

5. A slider device for a crane telescopic arm according to claim 4, characterized in that: The top of the slider (12) is plugged into the lifting column (132) and the limiting block (325) via a limiting groove (121), and the top of the slider (12) is plugged into two four-corner plug blocks (323) via two slots (123).

6. A slider device for a crane telescopic arm according to claim 4, characterized in that: The bolt (122) is threadedly connected to the four-corner plug block (323) through the threaded hole (324); the bottom of the lifting column (132) passes through the fixing tube (131) and extends to the outside; the lifting column (132) is slidably connected to the fixing tube (131).

7. A slider device for a crane telescopic arm according to claim 5, characterized in that: The outer surface of the limiting rod (321) contacts the inner wall of the limiting sliding groove provided in the fixing tube (131); the bottom of the vertical rod (322) penetrates the telescopic arm (1) and extends to the inside; the vertical rod (322) is slidably connected to the telescopic arm (1).

8. A slider device for a crane telescopic arm according to claim 4, characterized in that: The top of the threaded rod (133) is fixedly connected to a hexagonal block (134), and the outer surface of the threaded rod (133) is fixedly connected to two limiting rings (135), the bottom of the limiting ring (135) located at the top contacts the top of the fixed tube (131), and the top of the limiting ring (135) located at the bottom contacts the top of the inner wall of the cavity opened inside the fixed tube (131).

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