Self-propelled crane track adjusting device

Abstract

The utility model discloses a kind of self-propelled crane track adjusting devices, comprising: transmission assembly, including support seat, the support seat is symmetrically provided with two groups, two groups the support seat between being provided with base, the top and bottom of the support seat rotatably install auxiliary wheel;Adjusting group frame, including slide, the slide and support seat end inner wall cooperation sliding connection, the inner wall of the slide is connected with the first axle rotation adjusting wheel, the slide is telescopic with the inner wall of support seat telescopic adjustment position;Track, the track is engaged with auxiliary wheel, adjusting wheel, it is related to track adjusting device technical field, through the power transmission structure of beehive gear and lead screw, screw sleeve, the guiding effect of cooperation guide rib and sliding slot, the accurate, convenient adjustment of track tension is realized, adjustment process is stable, avoid the adjustment failure caused by slide deviation, simultaneously without disassembling component, operation efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of track adjustment devices, specifically a track adjustment device for a self-propelled crane. Background Technology

[0002] The tension adjustment of the track adjustment structure of existing self-propelled cranes mostly relies on simple bolt structures. The adjustment requires disassembling parts, which is cumbersome and lacks a stable sliding guide structure. This causes the slide to easily shift during the adjustment process, making it impossible to accurately control the track tension. This can easily lead to problems such as track loosening and derailment or excessive wear. Utility Model Content

[0003] The purpose of this utility model is to provide a self-propelled crane track adjustment device to solve the problems mentioned in the background art, such as the need to disassemble parts during adjustment, cumbersome operation, lack of stable sliding guide structure, easy displacement of the slide block during adjustment, and inability to accurately control the track tension.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A self-propelled crane track adjustment device includes: The transmission assembly includes a support base, two sets of which are symmetrically arranged on the left and right sides, and a base is provided between the two sets of support bases. Auxiliary wheels are rotatably mounted on the top and bottom of the support base. The adjustment frame includes a slide block, which is slidably connected to the inner wall of the end of the support base. The inner wall of the slide block is rotatably connected to an adjustment wheel via a first axle. The position of the slide block is adjusted by telescopic components that extend and retract with the inner wall of the support base. Tracks, which are engaged with auxiliary wheels and adjusting wheels.

[0005] In a preferred embodiment of this utility model, the telescopic component includes a threaded sleeve, which is rotatably mounted on the outer rear end wall of the slide block.

[0006] In a preferred embodiment of this utility model, the inner wall of the threaded sleeve is threadedly connected to an adjusting screw, and the rear end of the adjusting screw is rotatably connected to the inner wall of the support seat through a bearing.

[0007] In a preferred embodiment of this utility model, the inner wall of the slide is provided with an adjustment groove, the top and bottom inner walls of the adjustment groove are symmetrically provided with sliding grooves, and the top and bottom outer walls of the slide are symmetrically provided with guide ridges.

[0008] In a preferred embodiment of this utility model, the guide rib is slidably connected to the inner wall of the slide groove, the adjusting groove is fixedly installed with a bearing seat near the inner wall of the outer side of the track, and the inner wall of the bearing seat is rotatably connected to the drive shaft through the bearing.

[0009] In a preferred embodiment of this utility model, the outer wall of the inner end of the transmission shaft is connected to the outer wall of the adjusting screw by bevel gear meshing, and the outer wall of the front end of the transmission shaft is provided with an internal hexagonal groove.

[0010] In a preferred embodiment of this utility model, the inner wall of the internal hexagonal slot is fitted with an internal hexagonal wrench for driving the rotation of the transmission shaft to adjust the engagement length between the drive shaft and the threaded sleeve.

[0011] In a preferred embodiment of this utility model, auxiliary wheel frames are fixedly installed at the top and bottom of the support base. The inner wall of the auxiliary wheel frame is rotatably connected to the auxiliary wheel through a second axle. The inner wall of the track is provided with teeth, which are meshed and connected with the auxiliary wheel and the adjusting wheel. The outer wall of the track is provided with anti-slip teeth.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0013] 1. Through the power transmission structure composed of bevel gears, lead screws, and threaded sleeves, combined with the guiding effect of guide ribs and slide grooves, the track tension can be adjusted accurately and conveniently. The adjustment process is stable, avoiding adjustment failure caused by slide offset. At the same time, there is no need to disassemble parts, resulting in high operation efficiency. 2. The auxiliary wheel frame fixes the auxiliary wheel to improve meshing stability, the inner wall teeth of the track enhance the transmission and anti-slip performance of the wheel body, and the outer wall anti-slip teeth improve the friction with the ground. The combination of multiple structures improves the crane's driving stability under complex road conditions and reduces the risk of track derailment or slippage. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the main structure of a self-propelled crane track adjustment device. Figure 2 This is an exploded structural diagram of a self-propelled crane track adjustment device. Figure 3 This is a schematic diagram of the adjustment component structure in a self-propelled crane track adjustment device; Figure 4 This is a schematic diagram of the adjustment component structure in a self-propelled crane track adjustment device.

[0015] In the diagram: support base 100, auxiliary wheel frame 110, auxiliary wheel 120, adjusting groove 130, sliding groove 140, track 200, tooth 210, anti-slip tooth 220, slide block 300, guide ridge 310, threaded sleeve 320, adjusting screw 330, bearing 340, bearing seat 350, drive shaft 360, internal hexagonal groove 361, bevel gear 370, first axle 380, adjusting wheel 390. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] Example 1: As Figures 1-4 ,include: The transmission assembly includes a support base 100, with two sets of support bases 100 arranged symmetrically on the left and right sides, and a base between the two sets of support bases 100. Auxiliary wheels 120 are rotatably mounted on the top and bottom of the support base 100. The adjustment frame includes a slide 300, which is slidably connected to the inner wall of the end of the support 100. The inner wall of the slide 300 is rotatably connected to the adjustment wheel 390 through the first axle 380. The position of the slide 300 is adjusted by telescopic adjustment of the inner wall of the support 100 through the telescopic component. Track 200 is engaged with auxiliary wheel 120 and adjusting wheel 390. Track 200 is used in self-propelled cranes.

[0018] The specific application scenario of this embodiment is as follows: two sets of support seats 100 are symmetrically distributed on both sides of the base to provide support for the overall structure; the auxiliary wheels 120 at the top and bottom of the support seats 100 can rotate freely and serve as auxiliary support components for the transmission of the track 200. The sliding block 300 of the adjusting frame slides against the inner wall of the support base 100. Through the telescopic movement of the telescopic component, the sliding block 300 moves along the inner wall of the support base 100. The inner wall of the sliding block 300 moves synchronously with the adjusting wheel 390 mounted on the first axle 380, thereby changing the relative distance between the adjusting wheel 390 and the auxiliary wheel 120, and adjusting the tension of the meshing track 200. When the track 200 is loose, the telescopic component pushes the sliding block 300 outward, and the adjusting wheel 390 tightens the track 200. When the track 200 is too tight, the telescopic component pulls the sliding block 300 inward, loosening the track 200. A protective plate (not shown in the figure) is installed on the outside of the adjusting groove 130 for dust prevention and protection.

[0019] Example 2: Figures 1-4The telescopic component includes a threaded sleeve 320, which is rotatably mounted on the outer rear end of the slide block 300. The inner wall of the threaded sleeve 320 is threadedly connected to an adjusting screw 330. The rear end of the adjusting screw 330 is rotatably connected to the inner wall of the support base 100 via a bearing 340. An adjusting groove 130 is provided on the inner wall of the slide block 300. Sliding grooves 140 are symmetrically provided on the top and bottom inner walls of the adjusting groove 130. Guide ribs 310 are symmetrically provided on the top and bottom outer walls of the slide block 300. The guide ribs 310 are slidably connected to the inner wall of the sliding groove 140. A bearing seat 350 is fixedly installed on the inner wall of the adjusting groove 130 near the outer side of the track 200. The inner wall of the bearing seat 350 is rotatably connected to the drive shaft 360 via a bearing.

[0020] The specific application scenario of this embodiment is as follows: The threaded sleeve 320 of the telescopic component is rotatably installed on the outer wall of the rear end of the slide block 300, and its inner wall is threadedly engaged with the adjusting screw 330; the rear end of the adjusting screw 330 is rotatably connected to the inner wall of the support seat 100 through the bearing 340, ensuring that the adjusting screw 330 is fixed in position when it rotates; the adjusting groove 130 on the inner wall of the slide block 300 provides space for component installation; the sliding grooves 140 at the top and bottom of the adjusting groove 130 are slidably engaged with the guide ribs 310 at the top and bottom of the slide block 300, providing guidance for the movement of the slide block 300 and preventing the slide block 300 from deviating; the bearing seat 350 near the inner wall of the outer side of the track 200 in the adjusting groove 130 is used to fix the drive shaft 360; the bearing ensures that the drive shaft 360 can rotate stably, preparing for subsequent power transmission; during adjustment, the adjusting screw 330 is rotated, and the threaded sleeve 320 drives the slide block 300 to move along the engagement direction of the sliding groove 140 and the guide rib 310 under the action of the thread, realizing precise control of the position of the adjusting wheel 390.

[0021] Example 3: Figure 2-4 The outer wall of the inner end of the drive shaft 360 is connected to the outer wall of the adjusting screw 330 by meshing with a bevel gear 370. The outer wall of the front end of the drive shaft 360 is provided with an internal hexagonal groove 361. An internal hexagonal wrench is installed in the inner wall of the internal hexagonal groove 361 to drive the rotation of the drive shaft 360 to adjust the engagement length between it and the threaded sleeve 320.

[0022] The specific application scenario of this embodiment is as follows: the bevel gear 370 on the outer wall of the inner end of the drive shaft 360 meshes with the bevel gear 370 on the outer wall of the adjusting screw 330 to form a power transmission structure; the internal hexagonal groove 361 on the outer wall of the front end of the drive shaft 360 can cooperate with an internal hexagonal wrench. When it is necessary to adjust the tension of the track 200, the internal hexagonal wrench is inserted into the internal hexagonal groove 361 and rotated. The drive shaft 360 drives the bevel gear 370 to rotate, and the meshing bevel gear 370 further drives the adjusting screw 330 to rotate; when the adjusting screw 330 rotates, it undergoes relative threaded movement with the threaded sleeve 320, changing the meshing length between the threaded sleeve 320 and the adjusting screw 330, thereby pushing the slide 300 to move, realizing the position adjustment of the adjusting wheel 390, and finally completing the adjustment of the tension of the track 200.

[0023] Example 4: Figure 2 and Figure 3 The top and bottom of the support base 100 are fixedly installed with auxiliary wheel frame 110. The inner wall of the auxiliary wheel frame 110 is rotatably connected to the auxiliary wheel 120 through the second axle. The inner wall of the track 200 is provided with teeth 210. The teeth 210 are meshed with the auxiliary wheel 120 and the adjusting wheel 390 for transmission. The outer wall of the track 200 is provided with anti-slip teeth 220.

[0024] The specific application scenario of this embodiment is as follows: The auxiliary wheel frames 110 at the top and bottom of the support base 100 provide a fixed mounting base for the auxiliary wheel 120. The auxiliary wheel 120 is rotatably mounted on the inner wall of the auxiliary wheel frame 110 via the second axle, ensuring stable rotation of the auxiliary wheel 120 and preventing wobbling. The teeth 210 on the inner wall of the track 200 mesh with the teeth of the auxiliary wheel 120 and the adjusting wheel 390, enhancing transmission stability and preventing slippage between the track 200 and the wheel body. The anti-slip teeth 220 on the outer wall of the track 200 can increase the contact friction with the ground, preventing the track 200 from slipping when the crane is moving under complex road conditions such as soft or sloping surfaces, thus improving driving safety. During operation, the auxiliary wheel 120 and the adjusting wheel 390 rotate, driving the track 200 to move through the teeth 210. The anti-slip teeth 220 are in close contact with the ground, ensuring stable crane movement.

[0025] The working principle of this utility model is as follows: When using the self-propelled crane, if the tracks need to be adjusted before or during travel, an Allen wrench is inserted into the Allen groove 361 of the drive shaft 360 and rotated. The drive shaft 360 drives the adjusting screw 330 to rotate through the bevel gear 370. The adjusting screw 330 is threadedly engaged with the threaded sleeve 320 at the rear end of the slide block 300. Under the action of the thread, the threaded sleeve 320 drives the slide block 300 to move along the inner wall of the support base 100. At this time, the guide ribs 310 at the top and bottom of the slide block 300 slide along the sliding grooves 140 at the top and bottom of the adjusting groove 130, ensuring that the slide block 300 moves smoothly. The track tension is adjusted by the adjusting wheel 390 mounted on the first axle 380, which moves synchronously with the inner wall of the slide 300. During travel, the auxiliary wheel 120 and the adjusting wheel 390 rotate, driving the track 200 to move through the teeth 210 on the inner wall of the track 200. The anti-slip teeth 220 on the outer wall of the track 200 enhance the friction with the ground, ensuring the crane travels stably under complex road conditions. Throughout the process, the auxiliary wheel frame 110 ensures the stability of the auxiliary wheel 120, the guide structure ensures precise adjustment, and the power transmission structure ensures convenient adjustment, together achieving efficient adjustment and stable transmission of the track.

[0026] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A track adjustment device for a self-propelled crane, characterized in that, include: The transmission assembly includes a support base (100), which is symmetrically arranged in two sets on the left and right sides. A base is provided between the two sets of support bases (100), and auxiliary wheels (120) are rotatably installed on the top and bottom of the support base (100). The adjustment frame includes a slide (300), which is slidably connected to the inner wall of the end of the support (100). The inner wall of the slide (300) is rotatably connected to the adjustment wheel (390) through the first axle (380). The position of the slide (300) is adjusted by telescopic components to extend and retract with the inner wall of the support (100). Track (200), which is engaged with auxiliary wheel (120) and adjusting wheel (390).

2. The self-propelled crane track adjustment device according to claim 1, characterized in that, The telescopic component includes a threaded sleeve (320), which is rotatably mounted on the outer rear end wall of the slide (300).

3. The self-propelled crane track adjustment device according to claim 2, characterized in that, The inner wall of the threaded sleeve (320) is threadedly connected to the adjusting screw (330), and the rear end of the adjusting screw (330) is rotatably connected to the inner wall of the support seat (100) through the bearing (340).

4. The self-propelled crane track adjustment device according to claim 3, characterized in that, The inner wall of the slide (300) is provided with an adjustment groove (130), and the top and bottom inner walls of the adjustment groove (130) are symmetrically provided with sliding grooves (140), and the top and bottom outer walls of the slide (300) are symmetrically provided with guide ribs (310).

5. The self-propelled crane track adjustment device according to claim 4, characterized in that, The guide rib (310) is slidably connected to the inner wall of the slide groove (140), and the adjusting groove (130) is fixedly installed with the bearing seat (350) near the inner wall of the outer side of the track (200). The inner wall of the bearing seat (350) is rotatably connected to the drive shaft (360) through the bearing.

6. The self-propelled crane track adjustment device according to claim 5, characterized in that, The inner end of the drive shaft (360) is connected to the outer wall of the adjusting screw (330) by a bevel gear (370) through meshing. The outer wall of the front end of the drive shaft (360) is provided with an internal hexagonal groove (361).

7. A self-propelled crane track adjustment device according to claim 6, characterized in that, The inner wall of the internal hexagonal groove (361) is fitted with an internal hexagonal wrench for driving the rotation of the transmission shaft (360) to adjust the engagement length between it and the threaded sleeve (320).

8. The self-propelled crane track adjustment device according to claim 1, characterized in that, The support base (100) has auxiliary wheel frames (110) fixedly installed at its top and bottom. The inner wall of the auxiliary wheel frame (110) is rotatably connected to the auxiliary wheel (120) through the second axle. The inner wall of the track (200) is provided with teeth (210). The teeth (210) are meshed and connected with the auxiliary wheel (120) and the adjusting wheel (390). The outer wall of the track (200) is provided with anti-slip teeth (220).

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