Crawler belt tensioning detection device of crawler dozer

Abstract

The utility model discloses a crawler belt tensioning detection device of a crawler dozer, which comprises an auxiliary supporting chain wheel, the auxiliary supporting chain wheel is arranged between two main supporting chain wheels, the auxiliary supporting chain wheel and the main supporting chain wheels are arranged on a dozer base, the top ends of the auxiliary supporting chain wheel and the main supporting chain wheels abut against a crawler belt, and a support is arranged on the dozer base. The support is pivoted with one end of the connecting rod, the other end of the connecting rod is rotatably connected with the auxiliary supporting chain wheel, a contact wheel is arranged at the bottom of the connecting rod, a contact switch is arranged below the contact wheel, and the contact wheel is matched with the contact switch. According to the utility model, the contact wheel is matched with the contact switch, when the tension of the crawler belt is too large, the connecting rod drives the contact wheel to roll on the cambered surface of the support and triggers the third contact switch, so that the third contact switch feeds back a signal that the tension is too large to the control system; and the contact wheel moves upwards, triggers the first contact switch and feeds back a signal that the tension of the crawler belt is too small, so that the tensioning condition of the crawler belt is automatically detected.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a crawler track tensioning detection device for a crawler bulldozer. Background Art

[0002] Crawler bulldozers are widely used in construction, mining and road construction. The tension of their tracks directly affects the stability and life of the machine. Too loose tracks will cause the tracks to fall off and slip, reducing operating efficiency, while too tight tracks will accelerate wear and shorten the service life of the tracks and related components. Traditionally, the inspection of track tension status relies on manual visual inspection or empirical judgment, which is highly subjective and inaccurate. Therefore, it is particularly important to develop a device that can automatically detect the tension of the tracks. Utility Model Content

[0003] The utility model aims to provide a crawler track tension detection device for a crawler bulldozer, which has the advantage of being able to automatically detect the tension of the crawler track and solves the problems in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A crawler bulldozer track tensioning detection device comprises an auxiliary sprocket, wherein the auxiliary sprocket is arranged between two main sprockets, the auxiliary sprocket and the main sprocket are installed on the bulldozer base, the top ends of the auxiliary sprocket and the main sprocket are in contact with the crawler track, a bracket is provided on the bulldozer base, the bracket is pivotally connected to one end of a connecting rod, the other end of the connecting rod is rotatably connected to the auxiliary sprocket, a contact wheel is provided at the bottom of the connecting rod, a contact switch is provided below the contact wheel, and the contact wheel cooperates with the contact switch.

[0006] Preferably, there are two connecting rods and they are respectively located at the two ends of the auxiliary sprocket wheel. The connecting rods are connected by a first support bar and a second support bar. An elastic support rod is provided at the bottom end of the first support bar. The two ends of the elastic support rod are respectively pivotally connected to the first support bar and the bulldozer base.

[0007] Preferably, a mounting rod is fixed to the bottom surface of the second support bar, and the bottom end of the mounting rod is rotatably connected to the contact wheel.

[0008] Preferably, a support is provided on the bulldozer base, the support is located on one side of the elastic support rod and below the auxiliary sprocket wheel, the side of the support facing the contact wheel is an arc surface, the movement trajectory of the contact wheel coincides with the arc surface and contacts the arc surface, and a contact switch is provided on the arc surface.

[0009] Preferably, the contact switch includes a first contact switch, a second contact switch and a third contact switch, and the first contact switch, the second contact switch and the third contact switch are arranged in sequence from top to bottom.

[0010] Preferably, the first contact switch, the second contact switch and the third contact switch are connected to a control system signal in the cab.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model arranges a contact wheel to cooperate with a contact switch. When the track tension is too large, the auxiliary sprocket wheel is pressed to rotate clockwise downward by a certain angle through a connecting rod. The connecting rod drives the contact wheel to roll on the arc surface of the support and triggers the third contact switch, so that it feeds back a signal of excessive tension to the control system. When the track tension is too small, the contact wheel moves upward and triggers the first contact switch. The first contact switch 14 feeds back a signal of excessive track tension to the control system, thereby realizing automatic detection of the track tension condition, saving time and manpower, and thus improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the axonometric drawing of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural plan view of the utility model;

[0015] Figure 3 This is a first state diagram of the contact wheel and contact switch of the utility model;

[0016] Figure 4 This is a second state diagram of the contact wheel and contact switch of the utility model.

[0017] In the figure: 1. Auxiliary supporting sprocket; 2. Main supporting sprocket; 3. Bulldozer base; 4. Track; 5. Bracket; 6. Connecting rod; 7. Contact wheel; 8. Contact switch; 9. First support bar; 10. Second support bar; 11. Elastic support rod; 12. Mounting rod; 13. Support; 14. First contact switch; 15. Second contact switch; 16. Third contact switch. DETAILED DESCRIPTION

[0018] 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 the embodiments. 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.

[0019] In order to solve the problem that the existing technology cannot automatically detect the tension of the bulldozer track, the following technical solution is given. Please refer to Figure 1-4 ;

[0020] A crawler bulldozer track tensioning detection device comprises an auxiliary sprocket 1, which is arranged between two main sprockets 2. The auxiliary sprocket 1 and the main sprocket 2 are installed on a bulldozer base 3. The top ends of the auxiliary sprocket 1 and the main sprocket 2 abut against a crawler track 4. A bracket 5 is provided on the bulldozer base 3. The bracket 5 is pivotally connected to one end of a connecting rod 6. The other end of the connecting rod 6 is rotatably connected to the auxiliary sprocket 1. A contact wheel 7 is provided at the bottom of the connecting rod 6. A contact switch 8 is provided below the contact wheel 7. The contact wheel 7 cooperates with the contact switch 8.

[0021] There are two connecting rods 6 and they are respectively located at the two ends of the auxiliary supporting sprocket wheel 1. The connecting rods 6 are connected by a first support bar 9 and a second support bar 10. An elastic support rod 11 is provided at the bottom end of the first support bar 9. The two ends of the elastic support rod 11 are respectively pivotally connected to the first support bar 9 and the bulldozer base 3; the elastic support rod 11 can use a spring rod or a cylinder. When the tension of the crawler track 4 is large, the crawler track 4 is tightened and presses the auxiliary supporting sprocket wheel 1 downward. The auxiliary supporting sprocket wheel 1 rotates downward through the connecting rod 6, causing the elastic support rod 11 to contract. When the tension of the crawler track 4 is small, the crawler track 4 is relatively loose. Under the action of the elastic support rod 11, the auxiliary supporting sprocket wheel 1 is lifted upward through the connecting rod 6, and the crawler track 4 is tightened to a certain extent.

[0022] A mounting rod 12 is fixed to the bottom surface of the second support bar 10, and the bottom end of the mounting rod 12 is rotatably connected to the contact wheel 7. A support 13 is provided on the bulldozer base 3, and the support 13 is located on one side of the elastic support rod 11 and below the auxiliary sprocket wheel 1. The side of the support 13 facing the contact wheel 7 is an arc surface, and the movement trajectory of the contact wheel 7 coincides with the arc surface and contacts the arc surface, and a contact switch 8 is provided on the arc surface. The contact switch 8 includes a first contact switch 14, a second contact switch 15 and a third contact switch 16, and the first contact switch 14, the second contact switch 15 and the third contact switch 16 are arranged in sequence from top to bottom. The first contact switch 14, the second contact switch 15 and the third contact switch 16 are connected to the control system signal in the cab. When the crawler track 4 is tightened, the auxiliary sprocket wheel 1 is pressed downward. When the connecting rod 6 rotates downward, it drives the mounting rod 12 to rotate clockwise by a certain angle through the second support bar 10. The mounting rod 12 drives the contact wheel 7 to move downward and roll on the arc surface of the support 13. When the crawler track 4 is tightened to a certain extent, the contact wheel 7 is pressed down and contacts the third contact switch 16. At this time, the third contact switch 16 is triggered and feeds back a signal that the tension of the crawler track 4 is too large to the control system; similarly, when the tension of the crawler track 4 is normal, the contact wheel 7 contacts the second contact switch 15, and the second contact switch 15 can always feed back a normal signal to the control system. When the tension of the crawler track 4 is too small, the contact wheel 7 moves upward and triggers the first contact switch 14. The first contact switch 14 feeds back a signal that the tension of the crawler track 4 is too small to the control system.

[0023] Working principle: when the tension of the crawler track 4 is large, the crawler track 4 is tightened and presses the auxiliary sprocket wheel 1 downward, and the auxiliary sprocket wheel 1 rotates downward through the connecting rod 6, causing the elastic support rod 11 to contract. At the same time, the connecting rod 6 rotates downward and drives the mounting rod 12 to rotate clockwise at a certain angle through the second support bar 10. The mounting rod 12 drives the contact wheel 7 to move downward and roll on the arc surface of the support 13. When the crawler track 4 is tightened to a certain extent, the contact wheel 7 is pressed down and contacts the third contact switch 16. At this time, the third contact switch 16 is triggered and feeds back a signal that the crawler track 4 tension is too large to the control system, and vice versa.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crawler bulldozer track tension detection device, comprising an auxiliary sprocket wheel (1), characterized in that: The auxiliary sprocket wheel (1) is arranged between the two main sprocket wheels (2). The auxiliary sprocket wheel (1) and the main sprocket wheel (2) are installed on the bulldozer base (3). The top ends of the auxiliary sprocket wheel (1) and the main sprocket wheel (2) are in contact with the crawler track (4). The bulldozer base (3) is provided with a bracket (5). The bracket (5) is pivotally connected to one end of a connecting rod (6). The other end of the connecting rod (6) is rotatably connected to the auxiliary sprocket wheel (1). A contact wheel (7) is provided at the bottom of the connecting rod (6). A contact switch (8) is provided below the contact wheel (7). The contact wheel (7) cooperates with the contact switch (8).

2. The crawler bulldozer track tensioning detection device according to claim 1, characterized in that: There are two connecting rods (6) respectively located at the two ends of the auxiliary sprocket wheel (1), and the connecting rods (6) are connected via a first support bar (9) and a second support bar (10). An elastic support rod (11) is provided at the bottom end of the first support bar (9), and the two ends of the elastic support rod (11) are respectively pivotally connected to the first support bar (9) and the bulldozer base (3).

3. The crawler bulldozer track tension detection device according to claim 2, characterized in that: A mounting rod (12) is fixed to the bottom surface of the second support bar (10), and the bottom end of the mounting rod (12) is rotatably connected to the contact wheel (7).

4. The crawler bulldozer track tensioning detection device according to claim 3, characterized in that: A support (13) is provided on the bulldozer base (3), the support (13) is located on one side of the elastic support rod (11) and below the auxiliary sprocket wheel (1), the side of the support (13) facing the contact wheel (7) is an arc surface, the movement trajectory of the contact wheel (7) overlaps with the arc surface and contacts the arc surface, and a contact switch (8) is provided on the arc surface.

5. The crawler bulldozer track tension detection device according to claim 4, characterized in that: The contact switch (8) comprises a first contact switch (14), a second contact switch (15) and a third contact switch (16), wherein the first contact switch (14), the second contact switch (15) and the third contact switch (16) are arranged in sequence from top to bottom.

6. The crawler bulldozer track tension detection device according to claim 5, characterized in that: The first contact switch (14), the second contact switch (15) and the third contact switch (16) are connected to control system signals in the cab.

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