CN210235140U - Track tensioning mechanism and tracked vehicle - Google Patents
Track tensioning mechanism and tracked vehicle Download PDFInfo
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- CN210235140U CN210235140U CN201921000192.0U CN201921000192U CN210235140U CN 210235140 U CN210235140 U CN 210235140U CN 201921000192 U CN201921000192 U CN 201921000192U CN 210235140 U CN210235140 U CN 210235140U
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Abstract
The utility model provides a track tensioning mechanism and a track vehicle, which comprises a hydraulic cylinder, a slide block arranged on a track wheel bracket in a sliding way and a tensioning wheel contacted with a track; a piston rod of the hydraulic cylinder is fixedly connected with the sliding block; and a buffer device for buffering is arranged on the sliding block, and the buffer device is connected with the tensioning wheel. This track straining device, the operation is swift convenient and the practicality is strong.
Description
Technical Field
The utility model relates to a track technical field especially relates to a track straining device and tracked vehicle.
Background
The crawler belt has the advantages of low ground pressure, good trafficability, strong climbing capability and the like, and is widely applied to engineering vehicles, such as excavators, cranes and road rollers. The vehicles provided with the tracks may also be collectively referred to as tracked vehicles.
The crawler belt plays an important role in improving the vehicle trafficability, etc., as a component of the crawler vehicle. When the crawler-type vehicle walks, the tensioning degree of the crawler is very important, and the crawler can have a good working state only by enabling the crawler to be in a proper tensioning degree.
At present, the tightness of the crawler belt is adjusted by manual operation, and the operation is time-consuming and labor-consuming.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a track straining device and tracked vehicle for there is the problem that wastes time and energy in the operation of adjusting the track elasticity among the solution prior art.
In order to solve the above problem, the utility model provides a: a track tensioning mechanism comprises a hydraulic cylinder, a sliding block and a tensioning wheel, wherein the sliding block is arranged on a track wheel bracket in a sliding mode, and the tensioning wheel is in contact with a track;
a piston rod of the hydraulic cylinder is fixedly connected with the sliding block;
and a buffer device for buffering is arranged on the sliding block, and the buffer device is connected with the tensioning wheel.
As a further improvement of the above technical solution, a linear chute is arranged on the crawler wheel support, and the slider is arranged in the linear chute;
the linear sliding groove is parallel to or collinear with a piston rod of the hydraulic cylinder.
As a further improvement of the above technical solution, a first stopper and a second stopper are disposed in the linear chute to limit a range of motion of the slider, wherein the slider is disposed between the first stopper and the second stopper.
As a further improvement of the technical scheme, the sliding block is provided with a roller wheel, and the roller wheel is in rolling connection with the inner wall of the linear sliding groove.
As a further improvement of the technical scheme, the crawler wheel support is provided with an installation frame, and the linear sliding groove is formed in the installation frame.
As a further improvement of the above technical solution, the mounting bracket is detachably connected to the track wheel bracket.
As a further improvement of the above technical solution, the buffer device comprises a grease tensioning device.
As a further improvement of the above technical solution, the damping means includes a compression spring.
As a further improvement of the technical scheme, the hydraulic control system for driving the hydraulic cylinder is further included.
The utility model discloses still provide: a track laying vehicle comprising a track tensioning mechanism as claimed in any one of the preceding claims.
The utility model has the advantages that: the utility model provides a track tensioning mechanism, which comprises a hydraulic cylinder, a slide block arranged on a track wheel bracket in a sliding way and a tensioning wheel contacted with a track; a piston rod of the hydraulic cylinder is fixedly connected with the sliding block; the sliding block is provided with a buffer device for buffering, and the buffer device is connected with the tensioning wheel.
And starting the hydraulic cylinder, driving the lower slide block to move under the drive of a piston rod of the hydraulic cylinder, and adjusting the position of the tension wheel so as to control the tension degree of the track. Wherein, the track can produce certain impact to the take-up pulley when the track is moving, can play the effect of buffering through buffer, avoids track, take-up pulley and pneumatic cylinder to receive too big impact to can effectively improve track and track straining device's life.
This track straining device, the operation is swift convenient and the practicality is strong.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 shows a schematic view of a track tensioning mechanism;
FIG. 2 shows a schematic view of a butter tensioning device;
FIG. 3 shows a schematic view of a mounting bracket;
fig. 4 shows a schematic diagram of a hydraulic control system.
Description of the main element symbols:
100-hydraulic cylinder; 200-a slide block; 300-a tensioning wheel; 400-a buffer device; 410-a yellow oil cylinder; 420-a tension spring; 430-left baffle; 440-a right baffle; 450-a nut; 500-rigid wheel base; 600-a linear chute; 610-a first stop; 620-second stop; 630-a mounting frame; 700-a hydraulic control system; 710-a solenoid directional valve; 720-a main valve; 730-a one-way valve; 740-safety valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 1, in the present embodiment, a track tensioning mechanism is provided, which includes a hydraulic cylinder 100, a slider 200 slidably disposed on a track wheel frame, and a tensioning wheel 300 in contact with a track. Wherein, the athey wheel support is used for installing the athey wheel.
The piston rod of the hydraulic cylinder 100 is fixedly connected with the slide block 200.
The slider 200 is provided with a buffer 400 for buffering, and the buffer 400 is connected with the tension wheel 300.
In this embodiment, the damping device 400 is connected to the tension wheel 300 via a rigid wheel mount 500. One end of the rigid wheel seat 500 may be provided with a wheel axle for mounting the tension wheel 300, and the other end thereof may be fixedly connected with the buffer device 400.
The rigid wheel carrier 500 has high strength, and the rigid wheel carrier 500 is not easily deformed when an external force is applied thereto, thereby improving the stability and safety of the operation of the track-tightening mechanism.
The rigid wheel base 500 may be made of steel, cast iron, or the like.
The operating principle of the track tensioning mechanism is substantially as follows:
when the hydraulic cylinder 100 is started, the exposed part of the piston rod will extend or contract, and at this time, the sliding block 200 will move correspondingly under the driving of the piston rod, and thereby adjust the displacement of the tension wheel 300, thereby realizing the control of the tension degree of the track.
For ease of viewing, the outer most line in FIG. 1 represents the track.
Because the structural characteristics of track transmission itself and the road surface have the condition such as unevenness, crawler belt can produce certain impact to take-up pulley 300 in the crawler attachment is walking, and when take-up pulley 300 received the impact of crawler belt, buffer 400 can absorb some impact force, plays the effect of protection track and crawler tensioning mechanism from this.
Through setting up buffer 400, can protect subassembly such as track, take-up pulley 300 and pneumatic cylinder 100 effectively, reduce the impact and the influence of vibration to track and track straining device, improve track and track straining device's life.
In this embodiment, the buffer 400 may use a grease tensioner.
As shown in fig. 2, the grease tensioning device may include a grease cylinder 410, a tensioning spring 420, and the tensioning spring 420 is sleeved on the grease cylinder 410. The left side of the cylinder body of the yellow oil cylinder 410 is provided with a piston rod, and the right side of the cylinder body is provided with an oil injection nozzle communicated with the inner cavity of the cylinder body.
The left side of the cylinder body can be provided with a left baffle 430, the right side of the cylinder body can be slidably sleeved with a sleeve, and the sleeve can be provided with a right baffle 440. Wherein the tension spring 420 is located between the left and right shutters 430 and 440. The right side of the cylinder may be sleeved with a nut 450, the nut 450 being used to prevent the sleeve from slipping off the right side of the cylinder.
The piston rod of the yellow oil cylinder 410 can be fixedly connected with the rigid wheel seat 500, and the sleeve can be fixedly connected with the sliding block 200.
When the crawler belt tensioning device is used, butter can be injected into the butter cylinder 410 through the butter injection nozzle through the butter gun, the piston rod of the butter cylinder 410 moves and pushes the tensioning wheel 300, and meanwhile, the compression spring sleeved on the butter cylinder 410 can enable the crawler belt to obtain a certain pre-tensioning force. When the track encounters impact in operation, the change of impact force can enable the spring to stretch and contract, and therefore the buffer effect is achieved.
Specifically, the user can control the amount of grease injected into the grease cylinder 410 according to the degree of tension of the track.
In the present embodiment, the adjustment of the track tightness is mainly achieved by the hydraulic cylinder 100, but the user can also achieve fine adjustment of the track tightness by the grease tightening device.
In order to ensure the moving track of the sliding block 200, a linear sliding groove 600 may be disposed on the track wheel bracket, and the sliding block 200 is disposed in the linear sliding groove 600. Wherein the linear slide 600 is parallel or collinear with the piston rod of the hydraulic cylinder 100. When the linear chute 600 is parallel to the piston rod of the hydraulic cylinder 100, an additional rigid rod is required to be arranged between the slide block 200 and the piston rod of the hydraulic cylinder 100 to complete the connection.
In the present embodiment, the linear sliding groove 600 is provided, so that the sliding block 200 can move along a preset track.
When adjusting the tightness of the track, there are limits to the tightness and looseness of the track, and too much tightness or too much tightness is disadvantageous to the running of the track.
As shown in fig. 3, a first stopper 610 and a second stopper 620 for limiting a moving range of the slider 200 may be disposed in the linear chute 600, wherein the slider 200 is disposed between the first stopper 610 and the second stopper 620. The purpose of controlling the moving range of the idler 300 is achieved by limiting the moving range of the slider 200, thereby avoiding the situation that the track is too loose or too tight when the tightness of the track is adjusted.
In this embodiment, the sliding block 200 may be in direct contact with the inner wall of the linear chute 600, and at this time, the sliding connection between the sliding block 200 and the branch chute is formed.
Further, a roller may be disposed on the sliding block 200, and the roller is in rolling connection with the inner wall of the linear chute 600. Specifically, a slide corresponding to the roller may be disposed in the linear chute 600, wherein the slide is parallel to the linear chute 600, and the movement track of the roller may be limited by the slide.
The linear chute 600 may be directly provided on the track wheel bracket. However, in order to reduce the processing difficulty and facilitate maintenance, the following settings may be performed:
a mounting bracket 630 may be disposed on the track wheel bracket, wherein the linear chute 600 is disposed on the mounting bracket 630. The mounting frame 630 and the crawler wheel support are connected in a detachable connection mode.
Specifically, the mounting bracket 630 and the track wheel bracket may be assembled by bolting. Accordingly, the first stopper 610 and the second stopper 620 may be mounted on the mounting frame 630 by bolts.
In this embodiment, the track tensioning mechanism may also include a hydraulic control system 700 for driving the hydraulic cylinder 100.
Fig. 4 is a schematic diagram of a hydraulic control system 700.
The hydraulic control system 700 comprises an electromagnetic directional valve 710, a main valve 720 and a one-way valve 730, wherein an oil port P of the electromagnetic directional valve 710 is communicated with the main valve 720 through an oil pipe, an oil port a of the electromagnetic directional valve is communicated with an oil inlet of the one-way valve 730 through an oil pipe, an oil outlet of the one-way valve 730 is communicated with a rodless cavity of the hydraulic cylinder 100 through an oil pipe, an oil port T of the electromagnetic directional valve 710 is communicated with an oil tank through an oil pipe, an oil port B of the electromagnetic directional valve 710 is communicated with a rod cavity of the hydraulic cylinder 100 through an oil pipe, and an oil inlet of the one-way valve 730 is also communicated with an oil port B of the.
When the electromagnetic directional valve 710 is in the left position, the oil port P of the electromagnetic directional valve 710 is connected to the oil port a, and the oil port T is connected to the oil port B. The main valve 720 is opened, and under the power provided by the pump, the hydraulic oil flows in from the oil port P of the electromagnetic directional valve 710, passes through the oil port a and the check valve 730, and flows into the rodless cavity of the hydraulic cylinder 100; in the oil return path, the hydraulic oil flows out from the rod chamber of the hydraulic cylinder 100, passes through the oil ports B and T of the electromagnetic directional valve 710, and flows into the oil tank. At this time, the piston rod is extended, and the tension pulley 300 moves along with the slider 200, thereby increasing the tension of the crawler belt.
When the electromagnetic directional valve 710 is in the right position, the oil port P of the electromagnetic directional valve 710 is connected to the oil port B, and the oil port T is connected to the oil port a. The main valve 720 is opened, and under the power provided by the pump, the hydraulic oil flows in from the oil port P of the electromagnetic directional valve 710, flows into the rod cavity of the hydraulic cylinder 100 through the oil port B, and simultaneously, a part of the hydraulic oil flows in the check valve 730, so that the oil path of the check valve 730 is opened, and the hydraulic oil in the rod-free cavity flows out from the rod-free cavity, flows into the oil tank through the check valve 730, the oil port a, and the oil port T. At this time, the piston rod is contracted, and the tensioner 300 moves along with the slider 200, thereby reducing the tension of the track.
In this embodiment, the oil port T of the electromagnetic directional valve 710 is also communicated with the rodless chamber of the hydraulic cylinder 100 through an oil pipe provided with a relief valve 740.
The tensioning force provided by the track tensioning mechanism is reasonable, and particularly the magnitude of the tensioning force is related to the tightness degree of the track. Generally, within the range that the track can withstand: the larger the tension force is, the tighter the crawler belt is; the smaller the idler 300, the looser the track.
When the road conditions are different, the tightness of the crawler belt needs to be adjusted according to the conditions.
Specifically, when the crawler belt is used on a hard and flat road surface, the crawler belt is properly tightened through the crawler belt tensioning mechanism, so that the tensioning force of the crawler belt is improved, and the condition that the wearing of components such as the crawler belt and crawler wheels is aggravated due to vibration and jumping caused by the loosening of the crawler belt is avoided; when the crawler belt tensioning device meets a soft road surface, the crawler belt is properly loosened through the crawler belt tensioning device, so that the tensioning force of the crawler belt is reduced, and the conditions that the crawler belt is broken due to overlarge tensioning force and the like are avoided.
This track straining device, the operation is swift convenient and the practicality is strong. The user can realize the regulation of track elasticity through track straining device according to actual conditions.
In this embodiment, a track laying vehicle is also presented, comprising the track tensioning mechanism above. The tracked vehicles may include excavators, cranes, rollers, and the like, among others.
Example two
The present embodiment is different from the first embodiment in that the buffering device 400 employs a compression spring. One end of the compression spring may be fixedly connected to the slider 200, and the other end of the compression spring may be fixedly connected to the rigid wheel seat 500.
In this embodiment, through using compression spring to replace butter overspeed device tensioner, can effectively reduce cost.
Wherein, compression spring can be located straight line spout 600 partially or totally, can restrict compression spring's deformation direction through straight line spout 600 for compression spring can only be stretched or compressed along the axial, avoids compression spring to take place to buckle because of receiving the extrusion.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.
In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A track tensioning mechanism is characterized by comprising a hydraulic cylinder, a sliding block and a tensioning wheel, wherein the sliding block is arranged on a track wheel bracket in a sliding mode, and the tensioning wheel is in contact with a track;
a piston rod of the hydraulic cylinder is fixedly connected with the sliding block;
and a buffer device for buffering is arranged on the sliding block, and the buffer device is connected with the tensioning wheel.
2. The track tensioning mechanism of claim 1, wherein the track wheel carriage has a linear slot disposed therein, the slider block being disposed within the linear slot;
the linear sliding groove is parallel to or collinear with a piston rod of the hydraulic cylinder.
3. The track tensioning mechanism according to claim 2, wherein a first stop and a second stop are provided in the linear slide for limiting the range of motion of the slider, wherein the slider is disposed between the first stop and the second stop.
4. Track tensioning mechanism according to claim 2, characterized in that the slider is provided with rollers which are in rolling connection with the inner wall of the linear slide.
5. The track tensioning mechanism of claim 2, wherein the track wheel carriage has a mounting bracket disposed thereon, and the linear runner is disposed on the mounting bracket.
6. The track tensioning mechanism of claim 5, wherein the mounting bracket is removably connected to the track wheel bracket.
7. A track tensioning mechanism according to claim 1, wherein the damping means comprises a grease tensioning device.
8. The track tensioning mechanism of claim 1, wherein the damping device comprises a compression spring.
9. The track tensioning mechanism of claim 1, further comprising a hydraulic control system for driving the hydraulic cylinder.
10. A track laying vehicle comprising a track tensioning mechanism as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000192.0U CN210235140U (en) | 2019-06-28 | 2019-06-28 | Track tensioning mechanism and tracked vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921000192.0U CN210235140U (en) | 2019-06-28 | 2019-06-28 | Track tensioning mechanism and tracked vehicle |
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| CN210235140U true CN210235140U (en) | 2020-04-03 |
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| CN201921000192.0U Active CN210235140U (en) | 2019-06-28 | 2019-06-28 | Track tensioning mechanism and tracked vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516769A (en) * | 2020-05-12 | 2020-08-11 | 三一重机有限公司 | Crawler tensioning device and crawler type engineering machinery |
| CN113216836A (en) * | 2021-05-10 | 2021-08-06 | 张家口宣化华泰矿冶机械有限公司 | Crawler-type chassis module and anchor rod drill carriage |
| CN115056872A (en) * | 2022-07-28 | 2022-09-16 | 徐工集团工程机械股份有限公司道路机械分公司 | Crawler tensioning system, paver and method |
| CN115520717A (en) * | 2022-11-02 | 2022-12-27 | 江苏杜昌电力设备制造有限公司 | Cable conveying tractor and wireless remote control system thereof |
| CN116754420A (en) * | 2023-08-21 | 2023-09-15 | 江苏万胜科技股份有限公司 | Device and method for detecting multiple characteristics of vehicle crawler belt |
-
2019
- 2019-06-28 CN CN201921000192.0U patent/CN210235140U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516769A (en) * | 2020-05-12 | 2020-08-11 | 三一重机有限公司 | Crawler tensioning device and crawler type engineering machinery |
| CN111516769B (en) * | 2020-05-12 | 2023-11-17 | 三一重机有限公司 | Track tensioning device and track type engineering machinery |
| CN113216836A (en) * | 2021-05-10 | 2021-08-06 | 张家口宣化华泰矿冶机械有限公司 | Crawler-type chassis module and anchor rod drill carriage |
| CN113216836B (en) * | 2021-05-10 | 2022-07-22 | 张家口宣化华泰矿冶机械有限公司 | Crawler-type chassis module and anchor rod drill carriage |
| CN115056872A (en) * | 2022-07-28 | 2022-09-16 | 徐工集团工程机械股份有限公司道路机械分公司 | Crawler tensioning system, paver and method |
| CN115520717A (en) * | 2022-11-02 | 2022-12-27 | 江苏杜昌电力设备制造有限公司 | Cable conveying tractor and wireless remote control system thereof |
| CN115520717B (en) * | 2022-11-02 | 2023-10-27 | 江苏杜昌电力设备制造有限公司 | Cable conveying tractor and wireless remote control system thereof |
| CN116754420A (en) * | 2023-08-21 | 2023-09-15 | 江苏万胜科技股份有限公司 | Device and method for detecting multiple characteristics of vehicle crawler belt |
| CN116754420B (en) * | 2023-08-21 | 2024-03-19 | 江苏万胜科技股份有限公司 | Device and method for detecting multiple characteristics of vehicle crawler belt |
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