Expansion spring convenient to install and used for bulldozer

Abstract

The utility model relates to the technical field of bulldozers, in particular to a bulldozer tension spring convenient to install, which comprises an upper connecting plate, a guide wheel is rotatably installed on the upper connecting plate through a support, a supporting rod is vertically and fixedly installed on the upper surface of the upper connecting plate, and a moving groove is formed in the upper end of the supporting rod. A supporting rod is slidably mounted in the moving groove, a mounting plate is fixedly mounted at the upper end of the supporting rod, a vertical rod is fixedly mounted on the upper connecting plate, a connecting rod is vertically and fixedly mounted on the mounting plate, and a locking assembly is arranged between the vertical rod and the connecting rod. Under the mutual cooperation of the supporting rod, the supporting rod, the mounting plate, the vertical rod, the connecting rod and the locking assembly, the mounting plate is driven to vertically move upwards, the vertical rod is separated from one end of the connecting rod, when a rail chain is mounted, the rail chain can penetrate through a gap between the vertical rod and the connecting rod, so that the rail chain is mounted on a guide wheel, the mounting process is simple and convenient, and the mounting efficiency is improved. Therefore, time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bulldozers, in particular to a tension spring for a bulldozer which is convenient to install. Background Art

[0002] A bulldozer is a common engineering vehicle, which can be divided into some crawler bulldozers and wheeled bulldozers. Among them, the crawler bulldozer has many advantages such as greater traction, smaller ground contact pressure, and stronger climbing ability compared with the wheeled bulldozer, and is widely used. A tension spring needs to be used inside the crawler bulldozer during use.

[0003] Chinese Patent No. CN219888587U discloses a tension spring for a bulldozer to prevent track chain derailment, including a lower connecting plate and an upper connecting plate, and the upper connecting plate is arranged at the top end of the lower connecting plate. After installing the tension spring assembly of this tension spring for a bulldozer to prevent track chain derailment and placing the track chain into the inside of the top end of the guide wheel, the mounting bracket can be fixedly installed on the connecting plate by using the connecting bolts arranged on both sides inside at the top end of the upper connecting plate, and then the driving rod can be rotated at the top end of the mounting bracket... The internal components are simply arranged, and the problem solved is that it is not convenient to prevent the track chain from derailing when the tension spring is used.

[0004] In the above patent document, a mounting bracket is connected to the upper end of the upper connecting plate by bolts. However, when installing the track chain on the guide wheel, the mounting bracket needs to be disassembled and then installed before the track chain can be installed between the mounting bracket and the upper connecting plate, and its installation process is very complicated, time-consuming and laborious. Content of the Utility Model

[0005] The purpose of the utility model is to solve the following disadvantages in the prior art: when installing the track chain on the guide wheel, the mounting bracket needs to be disassembled and then installed before the track chain can be installed between the mounting bracket and the upper connecting plate, and its installation process is very complicated, time-consuming and laborious, and a tension spring for a bulldozer which is convenient to install is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A tension spring for a bulldozer which is convenient to install, including an upper connecting plate, a bracket is fixedly installed on the upper surface of the upper connecting plate, a guide wheel is rotatably installed on the bracket, and a tension spring assembly is installed on the lower surface of the upper connecting plate;

[0008] A support rod is vertically fixedly installed on the upper surface of the upper connecting plate, a moving groove is opened at the upper end of the support rod, a support rod is vertically slidably installed in the moving groove through a sliding assembly, a mounting plate is fixedly installed at the upper end of the support rod, and an anti-derailment assembly for preventing the track chain from falling off is arranged on the mounting plate;

[0009] A vertical rod is fixedly installed on the upper connecting plate, a connecting rod is vertically and fixedly installed on the mounting plate, and a locking assembly is arranged between the vertical rod and the connecting rod.

[0010] Preferably, the sliding assembly includes a strip-shaped hole formed in the side surface of the support rod and a slider fixedly installed on the support rod, and the slider is slidably installed in the strip-shaped hole.

[0011] Preferably, a threaded hole is formed in the mounting plate, and the anti-detachment assembly includes a threaded rod threadedly inserted into the threaded hole, a fixing plate rotatably installed at the lower end of the threaded rod, a roller rotatably installed on the lower surface of the fixing plate, and an adjusting block fixedly installed at the upper end of the threaded rod. The roller is located directly above the guide wheel.

[0012] Preferably, limiting holes are symmetrically formed in the mounting plate, limiting rods are vertically and slidably inserted into the two limiting holes, and one ends of the two limiting rods are fixedly connected to the fixing plate.

[0013] Preferably, a connection groove is formed at the upper end of the vertical rod, the lower end of the connecting rod is inserted into the connection groove, an L-shaped groove is formed in the side surface of the connecting rod, and the locking assembly includes a support block fixedly installed on the side surface of the vertical rod, a moving rod horizontally slidably installed on the support block, and a locking block fixedly installed at one end of the moving rod. The moving rod and the locking block are both inserted into the L-shaped groove.

[0014] Preferably, a top plate is vertically and slidably installed in the connection groove, a telescopic spring is fixedly installed on the lower surface of the top plate, and the lower end of the telescopic spring is fixedly connected to the inner wall of the connection groove.

[0015] In the present utility model, the beneficial effects are as follows:

[0016] With the mutual cooperation of the support rod, the support rod, the mounting plate, the vertical rod, the connecting rod and the locking assembly, the mounting plate is driven to move vertically upward, so that one end of the vertical rod is separated from the connecting rod. When installing the track chain, the track chain can be passed through the gap between the vertical rod and the connecting rod, thereby installing the track chain on the guide wheel. The installation process is simple and convenient, and there is no need to disassemble the connecting bolts, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a tension spring for a bulldozer that is convenient to install proposed by the present utility model;

[0018] Figure 2 is a three-dimensional structural schematic diagram of the locking assembly in the locked state;

[0019] Figure 3 is a three-dimensional structural schematic diagram of the locking assembly in the opened state;

[0020] Figure 4 Schematic three-dimensional structure diagram of the mounting plate and the anti-disengagement component;

[0021] Figure 5 is Figure 1 Enlarged view of the structure at position A in

[0022] Figure 6 is Figure 2 Enlarged view of the structure at position B in

[0023] In the figure: 1 upper connecting plate, 2 bracket, 3 guide wheel, 4 support rod, 5 support bar, 6 mounting plate, 7 vertical rod, 8 connecting rod, 9 strip-shaped hole, 10 slider, 11 threaded rod, 12 fixing plate, 13 roller, 14 limiting rod, 15 L-shaped groove, 16 support block, 17 moving rod, 18 locking block, 19 top plate, 20 telescopic spring. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Refer to Figures 1 - 6 , a tension spring for a bulldozer that is easy to install, including an upper connecting plate 1. A bracket 2 is fixedly installed on the upper surface of the upper connecting plate 1. A guide wheel 3 is rotatably installed on the bracket 2. A tension spring assembly is installed on the lower surface of the upper connecting plate 1.

[0026] The guide wheel 3 is rotatably installed on the upper connecting plate 1 through the bracket 2. The tension spring assembly is mainly composed of a lower connecting plate, a sliding rod, and a tension spring body. It is disclosed in the Chinese patent with the publication number CN219888587U and the theme name of a tension spring for a bulldozer to prevent track chain derailment, and will not be introduced in detail here.

[0027] A support rod 4 is vertically and fixedly installed on the upper surface of the upper connecting plate 1. A moving groove is opened at the upper end of the support rod 4. A support bar 5 is vertically and slidably installed in the moving groove through a sliding assembly. The sliding assembly includes a strip-shaped hole 9 opened on the side of the support rod 4 and a slider 10 fixedly installed on the support bar 5. The slider 10 is slidably installed in the strip-shaped hole 9. An anti-disengagement component for preventing the track chain from falling off is provided on the mounting plate 6 fixedly installed at the upper end of the support bar 5.

[0028] One end of the support bar 5 is slidably inserted into the moving groove and can move up and down in the moving groove. When the support bar 5 moves, it can drive the slider 10 to move up and down in the strip-shaped hole 9. Under the action of the slider 10 and the strip-shaped hole 9, one end of the support bar 5 can be prevented from disengaging from the moving groove.

[0029] A vertical rod 7 is fixedly installed on the upper connecting plate 1, and a connecting rod 8 is vertically and fixedly installed on the mounting plate 6. A locking assembly is provided between the vertical rod 7 and the connecting rod 8. A connecting groove is formed at the upper end of the vertical rod 7, and the lower end of the connecting rod 8 is inserted into the connecting groove. An L-shaped groove 15 is formed on the side surface of the connecting rod 8. The locking assembly includes a support block 16 fixedly installed on the side surface of the vertical rod 7, a moving rod 17 horizontally slidably installed on the support block 16, and a locking block 18 fixedly installed at one end of the moving rod 17. Both the moving rod 17 and the locking block 18 are inserted into the L-shaped groove 15. A top plate 19 is vertically slidably installed in the connecting groove, and a telescopic spring 20 is fixedly installed on the lower surface of the top plate 19. The lower end of the telescopic spring 20 is fixedly connected to the inner wall of the connecting groove.

[0030] When connecting and moving the vertical rod 7 and the connecting rod 8, insert one end of the connecting rod 8 into the connecting groove and contact the top plate 19 in the connecting groove, so that the telescopic spring 20 is compressed. Under the action of the elastic force of the telescopic spring 20, the connecting rod 8 has a tendency to move vertically upward. Then insert one end of the moving rod 17 into the L-shaped groove 15 and insert the locking block 18 into the L-shaped groove 15. Under the action of the moving rod 17 and the locking block 18, the vertical rod 7 and the connecting rod 8 are locked together.

[0031] When installing the track chain, press the connecting rod 8 to drive the connecting rod 8 to move a short distance into the connecting groove. At the same time, the moving rod 17 and the locking block 18 will move vertically upward in the L-shaped groove 15. The moving rod 17 contacts the upper inner wall of the L-shaped groove 15. Then horizontally move the moving rod 17 to drive the locking block 18 to move out of the L-shaped groove 15 together, releasing the connection between the vertical rod 7 and the connecting rod 8. Then drive the mounting plate 6 to move vertically upward, drive the support rod 5 to move upward on the support rod 4, and the vertical rod 7 is separated from the connecting rod 8, creating a gap between them. At this time, the track chain can be passed through the gap between the vertical rod 7 and the connecting rod 8 and installed on the guide wheel 3. Then lock the vertical rod 7 and the connecting rod 8 together through the locking assembly. The installation process is simple and convenient, without the need to disassemble the connecting bolts, saving time and effort.

[0032] Threaded holes are formed in the mounting plate 6. The anti-disengagement assembly includes a threaded rod 11 threadedly inserted into the threaded holes, a fixing plate 12 rotatably installed at the lower end of the threaded rod 11, a roller 13 rotatably installed on the lower surface of the fixing plate 12, and an adjusting block fixedly installed at the upper end of the threaded rod 11. The roller 13 is located directly above the guide wheel 3.

[0033] After installing the track chain on the guide wheel 3, rotate the adjusting block to drive the threaded rod 11 to rotate. Under the action of the threaded hole, the threaded rod 11 drives the fixing plate 12 to move in the direction of the guide wheel 3 vertically until the roller 13 contacts the track chain, thereby limiting the track chain between the roller 13 and the guide wheel 3, which can effectively prevent the track chain from derailing during operation.

[0034] The mounting plate 6 is symmetrically provided with limiting holes, and limiting rods 14 are vertically and slidably inserted into both of the two limiting holes. One ends of the two limiting rods 14 are fixedly connected to the fixing plate 12. When the threaded rod 11 drives the fixing plate 12 to move, the limiting rod 14 can prevent the threaded rod 11 from driving the fixing plate 12 to rotate.

[0035] In the present utility model, when installing the track chain, press the connecting rod 8 to release the locking of the locking assembly on the vertical rod 7 and the connecting rod 8, and then drive the mounting plate 6 to move vertically upward, driving the support rod 5 to move upward on the support rod 4. The vertical rod 7 is separated from the connecting rod 8, and a gap is generated therebetween. At this time, the track chain can be passed through the gap between the vertical rod 7 and the connecting rod 8 and installed on the guide wheel 3. Then, the vertical rod 7 and the connecting rod 8 are locked together through the locking assembly. The installation process is simple and convenient, without the need to disassemble the connecting bolts, saving time and effort.

[0036] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A tension spring for a bulldozer that is easy to install, including an upper connecting plate (1), characterized in that, A support (2) is fixedly installed on the upper surface of the upper connecting plate (1). A guide wheel (3) is rotatably installed on the support (2). A tension spring assembly is installed on the lower surface of the upper connecting plate (1). A support rod (4) is vertically and fixedly installed on the upper surface of the upper connecting plate (1). A moving groove is formed at the upper end of the support rod (4). A support rod (5) is vertically and slidably installed in the moving groove through a sliding assembly. An installation plate (6) is fixedly installed at the upper end of the support rod (5). An anti-detachment assembly for preventing the track chain from falling off is provided on the installation plate (6). A vertical rod (7) is fixedly installed on the upper connecting plate (1). A connecting rod (8) is vertically and fixedly installed on the installation plate (6). A locking assembly is provided between the vertical rod (7) and the connecting rod (8).

2. The tension spring for a bulldozer that is easy to install according to claim 1, wherein, The sliding assembly includes a strip-shaped hole (9) formed on the side surface of the support rod (4) and a slider (10) fixedly installed on the support rod (5). The slider (10) is slidably installed in the strip-shaped hole (9).

3. The tension spring for a bulldozer that is easy to install according to claim 1, wherein, A threaded hole is formed on the installation plate (6). The anti-detachment assembly includes a threaded rod (11) threadedly inserted into the threaded hole, a fixing plate (12) rotatably installed at the lower end of the threaded rod (11), a roller (13) rotatably installed on the lower surface of the fixing plate (12), and an adjusting block fixedly installed at the upper end of the threaded rod (11). The roller (13) is located directly above the guide wheel (3).

4. The tension spring for a bulldozer that is easy to install according to claim 3, wherein, Limiting holes are symmetrically formed on the installation plate (6). Limiting rods (14) are vertically and slidably inserted into the two limiting holes. One end of each of the two limiting rods (14) is fixedly connected to the fixing plate (12).

5. A tension spring for a bulldozer that is easy to install according to claim 1, characterized in that, A connecting groove is formed at the upper end of the vertical rod (7). The lower end of the connecting rod (8) is inserted into the connecting groove. An L-shaped groove (15) is formed on the side surface of the connecting rod (8). The locking assembly includes a support block (16) fixedly installed on the side surface of the vertical rod (7), a moving rod (17) horizontally slidably installed on the support block (16), and a locking block (18) fixedly installed at one end of the moving rod (17). The moving rod (17) and the locking block (18) are both inserted into the L-shaped groove (15).

6. The tension spring for a bulldozer that is easy to install according to claim 5, wherein, A top plate (19) is vertically and slidably installed in the connecting groove. A telescopic spring (20) is fixedly installed on the lower surface of the top plate (19). The lower end of the telescopic spring (20) is fixedly connected to the inner wall of the connecting groove.

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