Tensioning device for crawler belt installation

Abstract

The utility model discloses a tensioning device for crawler belt installation, which belongs to the technical field of engineering machinery and comprises a first pulling plate and a second pulling plate which are parallel and opposite to each other, the inner sides of the first pulling plate and the second pulling plate are respectively contacted with the outer sides of two adjacent crawler belts, and the first pulling plate is connected with the second pulling plate through a screw rod. The two ends of the lead screw penetrate through the first pulling plate and the second pulling plate respectively, a stopping part is arranged at one end of the lead screw and makes contact with the outer side of the first pulling plate, a threaded part is arranged at the other end of the lead screw and locked through a nut, and the nut makes contact with the outer side of the second pulling plate. The track shoe can be horizontally tensioned when a track is assembled, so that a track pin can smoothly penetrate into the track shoe, the number of the track shoe blocks of a track assembly is reasonable, and the problem of looseness of the track assembly in the using process is effectively solved.

Description

Technical Field

[0001] The utility model relates to a tensioning device for track installation, belonging to the technical field of construction machinery widely used in crawler cranes. Background Art

[0002] Crawler cranes are widely used in the field of construction machinery. The tightness of the crawler assembly affects the walking service life, and ensuring the reasonable tightness of the crawler assembly can reduce the wear of the four wheels. The existing assembly method of the crawler assembly is to lift both sides of the crawler to be connected by a lifting belt. The on-site assembly workers first insert the crawler pin into the pin hole of one side of the crawler plate, and it can only be smoothly inserted through the cooperation of multiple assembly workers. The assembly of the above crawler assembly must be in the case where the beam is relatively loose. Although it can be assembled smoothly, due to the wear of the pin hole of the rear crawler plate, the clearance between the hole and the shaft will increase, resulting in the crawler assembly being loose and unable to be tensioned during the subsequent vehicle operation, affecting the service life of the four wheels and one belt. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a tensioning device for track installation, which can horizontally tension the crawler plate during crawler assembly, enable the crawler pin to be smoothly inserted, ensure the reasonable number of crawler plates in the crawler assembly, and effectively solve the problem of the crawler assembly being loose during use.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] A tensioning device for track installation includes a first pull plate and a second pull plate which are arranged in parallel and opposite to each other. The inner sides of the first pull plate and the second pull plate are respectively in contact with the outer sides of two adjacent crawlers. The first pull plate and the second pull plate are connected by a lead screw. The two ends of the lead screw respectively pass through the first pull plate and the second pull plate. A stop portion is arranged at one end of the lead screw, and the stop portion is in contact with the outer side of the first pull plate. A threaded portion is arranged at the other end of the lead screw and is locked by a nut. The nut is in contact with the outer side of the second pull plate.

[0006] There are two sets of the tensioning devices, which are symmetrically distributed on both sides of the crawler.

[0007] The number of the lead screws is two, which are respectively located above and below the crawler.

[0008] The first pull plate and the second pull plate have the same shape and size.

[0009] The shapes of the first pull plate and the second pull plate are rectangular.

[0010] The two lead screws are located in the same plane in the up and down direction.

[0011] The shape of the stop portion is circular.

[0012] The lead screw is integrally formed with the stop portion.

[0013] Advantages of the present utility model: The present utility model provides a tensioning device for track installation. The inner sides of the first pull plate and the second pull plate are respectively in contact with the outer sides of two adjacent tracks. The first pull plate and the second pull plate are connected by a lead screw. The first pull plate and the second pull plate are pulled inward by the lead screw to horizontally tension the track plate during track assembly. The assembly efficiency of the track assembly can be greatly improved by a simple tensioning device, the rationality of the number of track plates can be ensured, the production cost can be reduced. In addition, it can prevent the track assembly from becoming loose due to wear during the later use of the vehicle. Finally, the tensioning device is highly operable, has a simple and reliable structure, and is convenient for disassembly and assembly. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a tensioning device for track installation of the present utility model in cooperation with a track;

[0015] Figure 2 is this Figure 1 schematic structural diagram from another perspective;

[0016] Figure 3 is a schematic structural diagram of the tensioning device for track installation of the present utility model alone;

[0017] The reference numerals in the drawings are as follows: 1 - first pull plate; 2 - second pull plate; 3 - lead screw; 4 - stop portion; 5 - nut; 6 - track. Detailed Embodiments

[0018] The present utility model will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and should not be used to limit the protection scope of the present utility model.

[0019] Embodiment 1

[0020] As Figures 1 to 3 shown, the present utility model discloses a tensioning device for track installation, including a first pull plate 1 and a second pull plate 2 which are arranged in parallel and opposite to each other. The inner sides of the first pull plate 1 and the second pull plate 2 are respectively in contact with the outer sides of two adjacent tracks 6. The first pull plate 1 and the second pull plate 2 cooperate with each other to move relatively to horizontally tension the track. The first pull plate 1 and the second pull plate 2 are connected by a lead screw 3, and the distance between the first pull plate 1 and the second pull plate 2 is adjusted by the lead screw 3. Both ends of the lead screw 3 respectively pass through the first pull plate 1 and the second pull plate 2. One end of the lead screw 3 is provided with a stop portion 4 which is in contact with the outer side of the first pull plate 1. The other end of the lead screw 3 is provided with a threaded portion and is locked by a nut 5. The nut 5 is in contact with the outer side of the second pull plate 2 to lock the second pull plate 2.

[0021] The working process of the utility model is as follows: When working, the pull plates are placed on both sides of the crawler plate. The lead screws above and below the pull plates are tightened to horizontally tighten the crawler and then insert the crawler pins. The utility model pulls the first pull plate and the second pull plate to move inwards through the lead screws, horizontally tightens the crawler plate during crawler assembly. The assembly efficiency of the crawler assembly can be greatly improved through a simple tightening device, the rationality of the number of crawler plates can be ensured, the production cost can be reduced, and in addition, the crawler assembly will not become loose due to wear during the later use of the vehicle.

[0022] Embodiment 2

[0023] As Figures 1 to 3 shown, the utility model discloses a tightening device for crawler installation. There are two groups of tightening devices, symmetrically distributed on both sides of the crawler 6. It includes a first pull plate 1 and a second pull plate 2 which are arranged parallel and opposite to each other. The inner sides of the first pull plate 1 and the second pull plate 2 are respectively in contact with the outer sides of two adjacent crawlers 6. The first pull plate 1 and the second pull plate 2 are the same in shape and size, and are rectangular. The first pull plate 1 and the second pull plate 2 cooperate to move relatively to horizontally tighten the crawler. The first pull plate 1 and the second pull plate 2 are connected by a lead screw 3, and the distance between the first pull plate 1 and the second pull plate 2 is adjusted through the lead screw 3. The number of lead screws 3 is two, which are respectively located above and below the crawler 6 and are in the same plane in the up-down direction. Both ends of the lead screw 3 pass through the first pull plate 1 and the second pull plate 2 respectively. A stop portion 4 is provided at one end of the lead screw 3, and the lead screw 3 and the stop portion 4 are integrally formed. The shape of the stop portion 4 is circular. The stop portion 4 is in contact with the outer side of the first pull plate 1. A threaded portion is provided at the other end of the lead screw 3 and is locked by a nut 5. The nut 5 is in contact with the outer side of the second pull plate 2 to lock the second pull plate 2.

[0024] The above are only the preferred embodiments of the utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A tensioning device for track installation, characterized in that: The invention comprises a first pull plate (1) and a second pull plate (2) which are arranged in parallel and opposite to each other, wherein the inner sides of the first pull plate (1) and the second pull plate (2) are respectively in contact with the outer sides of two adjacent crawlers (6), and the first pull plate (1) and the second pull plate (2) are connected via a screw rod (3), and the two ends of the screw rod (3) pass through the first pull plate (1) and the second pull plate (2) respectively, and one end of the screw rod (3) is provided with a stopper (4), and the stopper (4) is in contact with the outer side of the first pull plate (1), and the other end of the screw rod (3) is provided with a threaded portion and is locked by a nut (5), and the nut (5) is in contact with the outer side of the second pull plate (2).

2. The track installation tensioning device according to claim 1, characterized in that: The tensioning devices are in two groups and are symmetrically distributed on both sides of the crawler track (6).

3. The track installation tensioning device according to claim 1, characterized in that: There are two screw rods (3), which are respectively located above and below the crawler belt (6).

4. The track installation tensioning device according to claim 1, characterized in that: The first pull plate (1) and the second pull plate (2) have the same shape and size.

5. The track installation tensioning device according to claim 1, characterized in that: The first pull plate (1) and the second pull plate (2) are rectangular in shape.

6. The track installation tensioning device according to claim 3, characterized in that: The two screw rods (3) are located in the same plane in the up and down directions.

7. The track installation tensioning device according to claim 1, characterized in that: The stopper (4) is circular in shape.

8. The track installation tensioning device according to claim 1, characterized in that: The screw rod (3) and the stopper (4) are integrally formed.

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