CN212529853U

CN212529853U - Tensioning device

Info

Publication number: CN212529853U
Application number: CN202021255734.1U
Authority: CN
Inventors: 冯消冰; 李军旗; 魏然; 张�浩
Original assignee: Beijing Bo Tsing Technology Co Ltd
Current assignee: Beijing Bo Tsing Technology Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-02-12
Anticipated expiration: 2030-06-30

Abstract

The utility model relates to the technical field of robots, in particular to a tensioning device, which is used for tensioning a track sleeved on a driving wheel and a driven wheel and comprises a connecting plate, a connecting frame and a compression spring assembly, wherein both ends of the connecting plate along a first direction are provided with holding tanks; the rotating shafts of the driving wheel and the driven wheel are rotatably connected with connecting frames, and the two connecting frames are respectively arranged in the two accommodating grooves in a sliding manner; two compression spring subassemblies set up respectively in two holding tanks, and every compression spring subassembly's one end is connected with the diapire of holding tank, and the other end is connected with the link to the drive action wheel is kept away from each other with following the driving wheel. The utility model provides a overspeed device tensioner can realize the automatic tensioning of track, utilizes two sets of compression spring subassemblies to replace hydraulic system simultaneously, has avoided leading to the phenomenon that the track can not the tensioning to take place because of hydraulic system breaks down, and has reduced overspeed device tensioner's cost.

Description

Tensioning device

Technical Field

The utility model relates to the technical field of robot, especially, relate to a tensioning device.

Background

In the prior art, a plurality of track tensioning devices are used for a track type walking machine, and a lead screw track tensioning device and a hydraulic track tensioning device are commonly used. For the screw rod crawler tensioning device, after the crawler is tensioned at a certain position, the screw rod is locked through the nut, and the screw rod cannot be automatically adjusted in time after the crawler is loosened due to road condition change. For a hydraulic track tensioning device, the tensioning force of the hydraulic track tensioning device is not easy to control, and when a hydraulic system fails or hydraulic oil leaks, the tensioning force cannot ensure that a track is always in a tensioning state, so that the track is loosened, and further, the faults such as interference abrasion between the track and a track frame or track derailment and the like are generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tensioning device to realize the automatic tensioning of track, utilize two sets of compression spring subassemblies to replace hydraulic system simultaneously, avoided leading to the phenomenon that the track can not the tensioning to take place because of hydraulic system breaks down.

To achieve the purpose, the utility model adopts the following technical proposal:

a tensioning device for tensioning a track sleeved on a driving wheel and a driven wheel, wherein the driving wheel and the driven wheel are arranged at intervals along a first direction, and the tensioning device comprises:

the connecting plate is provided with accommodating grooves at two ends in the first direction;

the rotating shafts of the driving wheel and the driven wheel are rotatably connected with the connecting frames, and the two connecting frames are respectively arranged in the two accommodating grooves in a sliding manner;

the compression spring assembly, two the compression spring assembly sets up respectively in two the holding tank, every the one end of compression spring assembly with the diapire of holding tank is connected, the other end with the link is connected, in order to drive the action wheel with keep away from each other from the driving wheel.

Preferably, the holding tank is provided with an open top opposite to the bottom wall thereof, and the tensioning device further comprises:

the baffle, set up in the connecting plate is followed the terminal surface of first direction, and with the open-top sets up relatively, the link slides and wears to locate the baffle, the baffle can restrict the link breaks away from the holding tank.

Preferably, the baffle is detachably connected to the connecting plate by a fixing member.

Preferably, the side wall of the accommodating groove is provided with a guide groove extending along the first direction;

be provided with the flange on the link, the flange slide set up in the guide way to can the butt in it wears to establish the inboard of baffle, the inboard does the baffle is close to one side of holding tank.

Preferably, the guide groove is formed in both the upper side wall and the lower side wall of the accommodating groove.

Preferably, the compression spring assembly comprises:

one end of the guide pillar is connected with the bottom wall of the accommodating groove, and the other end of the guide pillar is connected with the connecting frame;

and the compression spring is sleeved outside the guide pillar, one end of the compression spring is abutted to the connecting frame, and the other end of the compression spring is abutted to the bottom wall of the accommodating groove.

Preferably, the guide post comprises an inner guide post and an outer guide post, one end of the inner guide post is slidably arranged in the outer guide post, the other end of the outer guide post is connected with the bottom wall of the accommodating groove, and the other end of the inner guide post is connected with the connecting frame.

Preferably, the compression spring assembly further comprises:

the mounting plate is detachably connected with the bottom wall of the accommodating groove, the guide pillar is connected with the bottom wall of the accommodating groove through the mounting plate, and the other end of the compression spring is abutted to the bottom wall of the accommodating groove through the mounting plate.

Preferably, the receiving groove penetrates through the connecting plate along a second direction, and the first direction is perpendicular to the second direction.

Preferably, the connecting plate is provided with lightening holes.

The utility model has the advantages that:

the restoring force of the two sets of compression spring assemblies acts on the driving wheel and the driven wheel through the connecting frame, so that the driving wheel and the driven wheel are driven to be away from each other, and tensioning of the crawler belt is achieved. The two groups of compression spring assemblies can replace the existing screw rod crawler tensioning device and the hydraulic crawler tensioning device, and automatic tensioning of the crawler is realized. Meanwhile, the phenomenon that the track cannot be tensioned due to the fact that a hydraulic system breaks down is avoided, and the cost of the tensioning device is reduced.

The two connecting frames are respectively connected with the driving wheel and the rotating shaft of the driven wheel in a rotating mode, so that the connecting frames cannot be driven to rotate by the rotation of the driving wheel and the driven wheel, and the two connecting frames keep away from each other. Two holding tanks have and hold compression spring assembly, prevent that compression spring assembly from receiving external interference, still can provide the direction for the slip of link simultaneously.

Drawings

Fig. 1 is a schematic structural view of a tensioning device provided in an embodiment of the present invention, installed behind a driving wheel and a driven wheel;

fig. 2 is a schematic structural diagram of a tensioning device provided by an embodiment of the present invention;

fig. 3 is a cross-sectional view of a portion of a tensioner provided by an embodiment of the present invention.

In the figure:

10. a driving wheel; 20. a driven wheel; 30. a crawler belt; 40. a tensioning device;

1. a connecting plate; 11. accommodating grooves; 111. a guide groove; 12. lightening holes;

2. a connecting frame; 21. blocking edges;

3. a compression spring assembly; 31. a compression spring; 32. mounting a plate; 33. an inner guide post; 34. an outer guide post;

4. and a baffle plate.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

The present invention is limited to certain orientation words, and when no opposite explanation is given, the used orientation words are "upper", "lower", "left", "right", "inner" and "outer", and these orientation words are adopted for easy understanding, and therefore do not constitute a limitation to the scope of the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; 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 in specific cases to those skilled in the art.

The embodiment provides a tensioning device 40 for realizing automatic tensioning of the crawler 30, and simultaneously, two sets of compression spring assemblies 3 are used for replacing a hydraulic system, so that the phenomenon that the crawler 30 cannot be tensioned due to the failure of the hydraulic system is avoided, and the cost of the tensioning device 40 is reduced.

As shown in fig. 1 and 2, the present embodiment provides a tensioning device 40 for tensioning the track 30 sleeved on the driving wheel 10 and the driven wheel 20, wherein the driving wheel 10 and the driven wheel 20 are spaced apart from each other in a first direction. The tensioner 40 comprises a link plate 1, a link frame 2 and a compression spring assembly 3. The connecting frames 2 are used for connecting the driving wheel 10 or the driven wheel 20, the connecting plate 1 is used for connecting the two connecting frames 2, the springs are used for keeping the two connecting frames 2 away from each other, the driving wheel 10 and the driven wheel 20 connected with the two connecting frames 2 are further pushed to be away from each other, and the crawler 30 is tensioned.

Specifically, holding tank 11 has all been seted up along the both ends of first direction to connecting plate 1, all rotates in the pivot of action wheel 10 and follow driving wheel 20 and is connected with link 2, and two link 2 slide respectively to set up in two holding tanks 11. Two compression spring assembly 3 set up respectively in two holding tanks 11, and the one end of every compression spring assembly 3 is connected with the diapire of holding tank 11, and the other end is connected with link 2 to drive action wheel 10 keeps away from each other with following driving wheel 20.

The compression spring assembly 3 and the connecting frame 2 are connected to two ends of the connecting plate 1, then the driving wheel 10 and the driven wheel 20 are arranged on the connecting frame 2 and press the compression spring assembly 3, the center distance between the driving wheel 10 and the driven wheel 20 is reduced by compressing the compression spring assembly 3, when the center distance between the driving wheel 10 and the driven wheel 20 is the minimum, the crawler 30 is arranged, after the crawler 30 is arranged, the center distance between the driving wheel 10 and the driven wheel 20 is increased through the effect of the compression spring assembly 3, and therefore the effect of tensioning the crawler 30 is achieved. When the distance between the driving wheel 10 and the driven wheel 20 is increased, the compression spring assembly 3 automatically extends again, so that the center distance between the driving wheel 10 and the driven wheel 20 is further increased, and the crawler 30 is in a tensioned state again.

The restoring force of the two sets of compression spring assemblies 3 acts on the driving wheel 10 and the driven wheel 20 through the connecting frame 2, so that the driving wheel 10 and the driven wheel 20 are driven to be away from each other, and the tensioning of the crawler 30 is realized. The two groups of compression spring assemblies 3 can replace the existing screw rod crawler tensioning device and the existing hydraulic crawler tensioning device, and the automatic tensioning of the crawler 30 is realized.

The two connecting frames 2 are respectively and rotationally connected with the rotating shafts of the driving wheel 10 and the driven wheel 20, so that the driving wheel 10 and the driven wheel 20 can not drive the connecting frames 2 to rotate, and the two connecting frames 2 keep away from each other. The two receiving grooves 11 have a function of receiving the compression spring assembly 3, preventing the compression spring assembly 3 from being interfered with by the outside, and providing a guide for the sliding of the link frame 2.

As shown in fig. 2 and 3, the receiving groove 11 is opened with a top opening opposite to the bottom wall thereof, and the top opening is disposed to facilitate disposing the compression spring assembly 3 in the receiving groove 11. In order to prevent the connecting frame 2 from being separated from the receiving groove 11 by the restoring force of the compression spring 31, the tensioning device 40 further includes a blocking plate 4, and the blocking plate 4 is disposed on the end surface of the connecting plate 1 in the first direction and is opposite to the top opening. Baffle 4 is worn to locate by the link 2 slip, and baffle 4 can restrict link 2 and break away from holding tank 11.

The blocking plate 4 can limit the center distance between the driving wheel 10 and the driven wheel 20 from being excessively increased due to the action of the compression spring assembly 3, so that the track 30 is not excessively tensioned, thereby preventing the track 30 from being broken.

Specifically, baffle 4 offers the through-hole that runs through baffle 4 along the first direction, and the through-hole is worn to locate in the link 2 slides to make link 2 slide and wear to locate baffle 4.

The baffle 4 is detachably connected to the connecting plate 1 by a fixing member so that a user can repair or replace the compression spring assembly 3 after detaching the baffle 4. Preferably, the mounting is the screw, and the through-hole of baffle 4 is just right to setting up with the open-top of holding tank 11, and the upper and lower both sides of through-hole all are provided with the screw.

As shown in fig. 2 and 3, preferably, the side wall of the receiving groove 11 is formed with a guide groove 111 extending along the first direction. The connecting frame 2 is provided with a flange 21, the flange 21 is slidably disposed in the guide groove 111 and can abut against the inner side of the baffle 4 penetrated through the guide groove, and the inner side is the side of the baffle 4 close to the accommodating groove 11. Therefore, the rib 21 has both a guiding function and a function of restricting the coupling frame 2 from being detached from the receiving groove 11.

In addition, when the rib 21 is in the guide groove 111, the upper end or the lower end of the rib 21 abuts against the bottom of the guide groove 111, and the side surface of the rib 21 is limited between the two side walls of the guide groove 111, so that the thickness of the rib 21 can be set small, the connecting frame 2 can stably slide along the guide groove 111, the friction force between the baffle 4 with the small thickness and the guide groove 111 can be reduced, and the adjustment sensitivity can be improved.

Preferably, the upper side wall and the lower side wall of the accommodating groove 11 are both provided with a guide groove 111, and the upper end and the lower end of the rib 21 are both abutted against the bottom of the guide groove 111, so as to further improve the stability of the sliding of the connecting frame 2.

In order to observe the working state of the compression spring assembly 3 in the accommodating groove 11, the accommodating groove 11 penetrates through the connecting plate 1 along a second direction, and the first direction is perpendicular to the second direction. In the present embodiment, the second direction is simultaneously perpendicular to the up-down direction. In other embodiments, the second direction may be parallel to the up-down direction, two guide grooves 111 are spaced along the first direction, and the third direction is perpendicular to the first direction and the second direction.

As shown in fig. 3, preferably, the compression spring assembly 3 includes a guide post and a compression spring 31, one end of the guide post is connected with the bottom wall of the receiving groove 11, and the other end is connected with the connecting frame 2; the compression spring 31 is sleeved outside the guide post, one end of the compression spring 31 is abutted with the connecting frame 2, and the other end is abutted with the bottom wall of the accommodating groove 11. The compression spring 31 tends to keep the two connecting frames 2 away from each other, and the guide posts prevent the compression spring 31 from bending failure.

To enable the connecting frame 2 to slide along the guide groove 111, it is preferable that the guide post includes an inner guide post 33 and an outer guide post 34, one end of the inner guide post 33 is slidably disposed in the outer guide post 34, the other end of the outer guide post 34 is connected with the bottom wall of the receiving groove 11, and the other end of the inner guide post 33 is connected with the connecting frame 2. Preferably, the inner guide post 33 is integrally formed with the connecting frame 2.

In order to facilitate the installation of the guide post, the compression spring assembly 3 further comprises a mounting plate 32, the mounting plate 32 is detachably connected with the bottom wall of the accommodating groove 11, the guide post is connected with the bottom wall of the accommodating groove 11 through the mounting plate 32, and the other end of the compression spring 31 is abutted against the bottom wall of the accommodating groove 11 through the mounting plate 32.

Lightening holes 12 are formed in the connecting plate 1 to lighten the weight of the connecting plate 1 and reduce the energy consumption of the robot. Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the lightening holes 12 are kidney-shaped holes, but in other embodiments, the lightening holes 12 may also have other shapes, which is not limited herein.

Preferably, a tensioning device 40 is provided on both sides of the driving wheel 10 and the driven wheel 20 in the second direction to ensure that the track 30 is tensioned.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tensioning device for tensioning a track (30) sleeved on a driving wheel (10) and a driven wheel (20), wherein the driving wheel (10) and the driven wheel (20) are arranged at intervals along a first direction, the tensioning device is characterized by comprising:

the connecting plate (1) is provided with accommodating grooves (11) at two ends along the first direction;

the rotating shafts of the driving wheel (10) and the driven wheel (20) are rotatably connected with the connecting frames (2), and the two connecting frames (2) are respectively arranged in the two accommodating grooves (11) in a sliding manner;

compression spring subassembly (3), two compression spring subassembly (3) set up respectively in two holding tank (11), every the one end of compression spring subassembly (3) with the diapire of holding tank (11) is connected, the other end with link (2) are connected, in order to drive action wheel (10) with keep away from each other from driving wheel (20).

2. Tensioner according to claim 1, characterized in that said housing groove (11) opens with a top opening opposite to its bottom wall, said tensioner further comprising:

baffle (4), set up in connecting plate (1) are followed the terminal surface of first direction, and with the open-top sets up relatively, link (2) slide and wear to locate baffle (4), baffle (4) can restrict link (2) break away from holding tank (11).

3. Tensioner according to claim 2, characterized in that said flap (4) is removably connected to said web (1) by means of a fixing.

4. The tensioning device according to claim 2, characterized in that a guide groove (111) extending along the first direction is formed on a side wall of the accommodating groove (11);

be provided with flange (21) on link (2), flange (21) slide set up in guide way (111) to can the butt locate it wears to establish the inboard of baffle (4), the inboard is baffle (4) are close to one side of holding tank (11).

5. The tensioning device according to claim 4, characterized in that the guide groove (111) is opened in both the upper and lower side walls of the receiving groove (11).

6. A tensioner according to claim 1, characterized in that said compression spring assembly (3) comprises:

one end of the guide column is connected with the bottom wall of the accommodating groove (11), and the other end of the guide column is connected with the connecting frame (2);

and the compression spring (31) is sleeved outside the guide pillar, one end of the compression spring (31) is abutted against the connecting frame (2), and the other end of the compression spring is abutted against the bottom wall of the accommodating groove (11).

7. The tensioning device according to claim 6, characterized in that said guide post comprises an inner guide post (33) and an outer guide post (34), one end of said inner guide post (33) being slidingly arranged inside said outer guide post (34), the other end of said outer guide post (34) being connected to the bottom wall of said housing groove (11), the other end of said inner guide post (33) being connected to said connecting bracket (2).

8. The tensioning device according to claim 6, characterized in that the compression spring assembly (3) further comprises:

the mounting plate (32) is detachably connected with the bottom wall of the accommodating groove (11), the guide column is connected with the bottom wall of the accommodating groove (11) through the mounting plate (32), and the other end of the compression spring (31) is abutted to the bottom wall of the accommodating groove (11) through the mounting plate (32).

9. Tensioner according to claim 1, characterized in that said housing groove (11) extends through said connection plate (1) in a second direction, said first direction being perpendicular to said second direction.

10. A tensioner according to claim 1, characterised in that the web (1) is provided with lightening holes (12).