Automatic tensioning structure and carrying equipment

Abstract

The utility model provides an automatic tensioning structure and carrying equipment, the automatic tensioning structure comprises a mounting seat and a tensioning block arranged on the mounting seat, the tensioning block comprises at least part of an arc part and at least part of a horizontal part, the arc part abuts against a transmission belt, and the horizontal part is parallel to the ground; an elastic reset piece is arranged between the tensioning block and the mounting base and used for enabling the arc part and the transmission belt to be in an abutting state all the time. According to the automatic tensioning structure, at least part of the arc section and at least part of the horizontal section are arranged on the tensioning block, so that in the up-down moving process of the tensioning block, the space occupation of the tensioning block is reduced, and the space utilization rate is increased.

Description

Technical Field

[0001] The present application relates to the technical field of warehousing equipment, and in particular to an automatic tensioning structure and a handling device. Background Art

[0002] During the walking process of a four-way shuttle board walking device, walking direction change is required. During the direction change process, the wheel drive shaft needs to switch actions up and down at any time, and the output shaft of the reducer cannot work in the same plane as the wheel drive shaft, resulting in the chain arranged on the drive shaft being prone to loosening and affecting normal operation.

[0003] In the prior art, in order to achieve tensioning of the chain, rollers for pressing the chain are arranged on the chain, and the chain is tensioned by pressing the chain with the rollers.

[0004] However, the rollers are relatively large, occupying a large amount of internal space of the walking device and affecting the internal structure layout of the device. Summary of the Invention

[0005] In view of the above defects, the present application provides an automatic tensioning structure and a handling device, which can achieve automatic tensioning of the transmission belt and reduce space occupation.

[0006] In a first aspect of the present application, an automatic tensioning structure is provided, including a mounting seat and a tensioning block arranged on the mounting seat. The tensioning block includes at least a partial arc portion and at least a partial horizontal portion. The arc portion abuts against the transmission belt, and the horizontal portion is parallel to the ground; an elastic reset member is arranged between the tensioning block and the mounting seat for keeping the arc portion in an abutting state with the transmission belt all the time.

[0007] Preferably, a convex portion is arranged on the surface of the arc portion along the bending radian, and the transmission belt abuts against the convex portion for limiting the transmission belt.

[0008] Preferably, convex baffles are further arranged on both sides of the arc portion. The convex portion is located between the convex baffles on both sides, and the transmission belt is located between the convex baffles on both sides and abuts against the convex portion.

[0009] Preferably, a sliding groove is vertically arranged on the mounting seat and a sliding block matched with the sliding groove. The tensioning block is fixed on the sliding block, and the elastic reset member is arranged between the sliding block and the mounting seat.

[0010] Preferably, a connecting seat is further included. The connecting seat is arranged above the elastic reset member and abuts against the elastic reset member. The connecting seat is vertically and fixedly arranged with the sliding block, the sliding block is arranged parallel to the elastic reset member, and the sliding block slides up and down along the sliding groove under the elastic force of the elastic reset member.

[0011] Preferably, it further includes an elastic guide post, the elastic reset sleeve is sleeved on the elastic guide post, and the elastic guide post is vertically arranged through the connecting seat.

[0012] Preferably, it further includes a support plate, the support plate is arranged above the tensioning block and is arranged in parallel with the mounting seat, and a height limiting member is vertically arranged on the support plate for limiting the rising height of the tensioning block.

[0013] The second aspect of the present application provides a handling device, including: a chassis, a traveling driving device arranged on the chassis, a lifting and reversing structure, and an automatic tensioning structure. The output shaft of the traveling driving device is connected to the lifting and reversing structure, the automatic tensioning structure is arranged on the chassis and abuts against the lifting and reversing structure; the lifting and reversing structure is in transmission connection with a traveling assembly arranged on the periphery of the handling device.

[0014] Preferably, the lifting and reversing structure includes a driving sprocket and a driven sprocket. The driving sprocket is in transmission connection with the output shaft of the traveling driving device. The driving sprocket and the driven sprocket are connected by a wound transmission belt. The driven sprocket is sleeved on a transmission shaft. Driven by the traveling driving device, the transmission shaft rotates. Traveling assemblies are arranged at both ends of the transmission shaft, and the automatic tensioning structure abuts against the transmission belt.

[0015] Preferably, the lifting and reversing structure further includes a lifting driving device. The transmission shaft moves up and down under the drive of the lifting driving device to realize the reversing travel of the handling device.

[0016] Beneficial effects: The automatic tensioning structure provided by the present application can reduce the space occupied by the tensioning block and improve the space utilization rate during the up and down movement of the tensioning block by providing at least a partial arc section and at least a partial horizontal section on the tensioning block. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram (first state) of an automatic tensioning structure provided by the present application;

[0018] Figure 2 is a schematic structural diagram (second state) of an automatic tensioning structure provided by the present application;

[0019] Figure 3 is a schematic structural diagram of a handling device provided by the present application;

[0020] Figure 4 is Figure 3 a partial enlarged view of part A in

[0021] Figure 5It is a schematic structural diagram of the automatic tensioning structure provided by this application in cooperation with the transmission belt 10;

[0022] Figure 6 It is a front view schematic diagram of the automatic tensioning structure provided by this application in cooperation with the transmission belt 10;

[0023] Figure 7 It is a rear view schematic diagram of the automatic tensioning structure provided by this application in cooperation with the transmission belt 10. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some, but not all, of the embodiments of this application. Usually, the components of the embodiments of this application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0025] See Figures 1-7 , a first aspect of this application discloses an automatic tensioning structure, including a mounting seat 1 and a tensioning block 2 provided on the mounting seat 1. The tensioning block 2 includes at least a partial arc portion 21 and at least a partial horizontal portion 22. The arc portion 21 abuts against the transmission belt 10, and the horizontal portion 22 is parallel to the ground; an elastic reset member 3 is provided between the tensioning block 2 and the mounting seat 1 for keeping the arc portion 21 in a state of always abutting against the transmission belt 10.

[0026] As a common transmission device for connecting two rotating structures, the specific structure of the transmission belt 10 may include structures such as chains and belts. These structures have the same characteristic, that is, there will be a natural sag during the transmission process, and the sag arc is a smooth curved edge. Therefore, when tensioning the transmission belt 10, this characteristic is utilized, that is, a pressure of a smooth curved surface is applied to the surface of the transmission belt 10 to tension the transmission belt 10 in a certain direction.

[0027] In the present application, by setting the tensioning block 2 to include at least a partial arc portion 21 and at least a partial horizontal portion 22, the space occupied by the tensioning block 2 can be reduced. The arc portion 21 abuts against the transmission belt 10 to achieve tensioning of the transmission belt 10. The horizontal section is arranged on the other side opposite to the arc section. Since the horizontal section is parallel to the ground direction and has a smooth surface, it will not affect the surrounding space during the up and down movement of the tensioning block 2. Moreover, by setting the arc section and the horizontal section, the volume of the tensioning block 2 can be reduced, further reducing the space occupancy.

[0028] A convex portion 23 is arranged on the arc portion 21 along the bending radian of the surface, and the transmission belt 10 abuts against the convex portion 23 for limiting the transmission belt 10.

[0029] When the transmission belt 10 adopts a chain structure, due to the grooves existing in the structure of the chain itself, in order to position the chain, the convex portion 23 is arranged on the arc portion 21. During installation, the convex portion 23 is engaged into the groove of the chain to position the chain. If the transmission belt 10 adopts a belt mechanism, since the belt has a certain flexibility, when the convex portion 23 abuts against the belt, the belt will deform, thereby positioning the belt.

[0030] Convex baffles are further arranged on both sides of the arc portion 21. The convex portion 23 is located between the convex baffles on both sides, and the transmission belt 10 is located between the convex baffles on both sides and abuts against the convex portion 23.

[0031] Furthermore, in order to prevent the transmission belt 10 from disengaging from the tensioning block 2, convex baffles are arranged on both sides of the arc portion 21. During installation, the transmission belt 10 is located between the convex baffles on both sides to limit the transmission belt 10.

[0032] A sliding groove 7 is vertically arranged on the mounting seat 1 and a slider 4 is matched with the sliding groove 7. The tensioning block 2 is fixed on the slider 4, and the elastic resetting member 3 is arranged between the slider 4 and the mounting seat 1.

[0033] See Figures 3-7 , both ends of the transmission belt 10 used in the tensioning structure disclosed in the present application are respectively wound around the driving sprocket 17 and the driven sprocket 15. Among them, the driven sprocket 15 is sleeved on the transmission shaft 16, and the transmission shaft 16 can move up and down to achieve commutation. During the up and down movement of the driven sprocket, the tensioning block 2 moves up and down to cooperate with the position change of the transmission belt 10. In order to ensure the abutment between the position of the tensioning block 2 and the transmission belt 10, an elastic resetting member 3 is arranged in the embodiment of the present application. By means of the elastic force, while the position of the tensioning block 2 is changed, it can always be in an abutting state with the transmission belt 10. The elastic resetting member 3 in the present application can be a spring or a rubber elastic gasket, etc.

[0034] The embodiment of the present application also includes a connecting seat 5, which is arranged above the elastic return member 3 and abuts against the elastic return member 3. The connecting seat 5 is vertically fixed to the slider 4, and the slider 4 is parallel to the elastic return member 3. The slider 4 slides up and down along the sliding groove 7 under the elastic force of the elastic return member 3.

[0035] By arranging the connecting seat 5 above the elastic reset member 3 , the pressure received can be evenly transferred to the elastic reset member 3 through the connecting seat 5 , so as to better control the movement of the tensioning block 2 .

[0036] The embodiment of the present application further comprises an elastic guide column 6 , on which the elastic reset member 3 is sleeved, and the elastic guide column 6 passes through the connecting seat 5 and is vertically arranged.

[0037] The embodiment of the present application also includes a support plate 8, which is arranged above the tension block 2 and parallel to the mounting seat 1. A height limiting member 9 is vertically arranged on the support plate 8 for limiting the rising height of the tension block 2.

[0038] Since the position of the tension block 2 is adjusted by the elastic force of the elastic reset member 3 in the embodiment of the present application, in order to avoid a large position deviation of the tension block 2, a support plate 8 and a height limit member 9 are provided above the tension block 2 to limit the position deviation of the tension block 2 within a certain range.

[0039] See also Figure 3 , Figure 4 The second aspect of the present application also provides a handling device, including: a chassis 12, a travel drive device 13 arranged on the chassis 12, a lifting and reversing structure and an automatic tensioning structure, the output shaft of the travel drive device 13 is connected to the lifting and reversing structure, the automatic tensioning structure is arranged on the chassis 12 and abuts against the lifting and reversing structure; the lifting and reversing structure is transmission-connected to a travel component 18 arranged on the periphery of the handling device.

[0040] The lifting and reversing structure includes a driving sprocket 17 and a driven sprocket 15, the driving sprocket 17 is connected to the output shaft of the travel drive device 13, the driving sprocket 17 and the driven sprocket 15 are connected through a wound transmission belt 10, the driven sprocket 15 is sleeved on the transmission shaft 16, and drives the transmission shaft 16 to rotate under the drive of the travel drive device 13, and travel components 18 are provided at both ends of the transmission shaft 16, and the automatic tensioning structure is in contact with the transmission belt 10.

[0041] The lifting and reversing structure also includes a lifting drive device, and the transmission shaft 16 moves up and down under the drive of the lifting drive device to realize the reversing movement of the transporting equipment.

[0042] The output shaft of the traveling drive device 13 transmits power to the driving sprocket 17. The driving sprocket 17 rotates with the output shaft. Under the drive of the transmission belt 10, it further drives the driven sprocket 15 to rotate. The driven sprocket 15 is sleeved on the transmission shaft 16, realizing the rotation of the transmission shaft 16. Traveling wheels are arranged on both sides of the transmission shaft 16. Due to the drive of the transmission belt 10, the traveling wheels rotate, and finally the traveling of the handling device is realized.

[0043] In order to realize the direction change of the handling device, two mutually perpendicular transmission shafts 16 are provided. Traveling wheels are arranged at both ends of each transmission shaft 16, and it can travel in two directions. In order to realize the direction change, the transmission shaft 16 is connected to the lifting drive device, and one of the transmission shafts 16 is lifted. After lifting, only the traveling wheels in one direction rotate.

[0044] However, due to the lifting of the transmission shaft 16, the driven sprocket 15 is displaced, and the position of the transmission belt 10 between it and the driving sprocket 17 changes, so that the pressure exerted by the transmission belt 10 on the tensioning block 2 changes, and the position of the tensioning block 2 changes. However, under the action of the elastic resetting member 3, it remains in contact with the transmission belt 10.

[0045] Certainly, the present application can also have many other embodiments. Without departing from the spirit and essence of the present application, those skilled in the art can make various corresponding changes and deformations according to the present application. However, these corresponding changes and deformations should all fall within the protection scope of the claims attached to the present application.

Claims

1. An automatic tensioning structure, characterized in that: The invention comprises a mounting seat (1) and a tensioning block (2) arranged on the mounting seat (1), wherein the tensioning block (2) comprises at least a part of a circular arc portion (21) and at least a part of a horizontal portion (22), wherein the circular arc portion (21) abuts against a transmission belt (10), and the horizontal portion (22) is parallel to the ground; an elastic reset member (3) is arranged between the tensioning block (2) and the mounting seat (1) for keeping the circular arc portion (21) and the transmission belt (10) in abutment at all times.

2. The automatic tensioning structure according to claim 1, characterized in that: A raised portion (23) is provided along the curved arc of the surface of the circular arc portion (21), and the transmission belt (10) abuts against the raised portion (23) to limit the position of the transmission belt (10).

3. The automatic tensioning structure according to claim 2, characterized in that: Raised baffles are also provided on both sides of the arc portion (21); the raised portion (23) is located between the raised baffles on both sides; and the transmission belt (10) is located between the raised baffles on both sides and abuts against the raised portion (23).

4. The automatic tensioning structure according to claim 1, characterized in that: The mounting seat (1) is vertically provided with a sliding groove (7) and a sliding block (4) cooperating with the sliding groove (7); the tensioning block (2) is fixed on the sliding block (4); and the elastic reset member (3) is arranged between the sliding block (4) and the mounting seat (1).

5. The automatic tensioning structure according to claim 4, characterized in that: The device further comprises a connecting seat (5), wherein the connecting seat (5) is arranged above the elastic reset member (3) and abuts against the elastic reset member (3), the connecting seat (5) and the sliding block (4) are fixedly arranged vertically, the sliding block (4) and the elastic reset member (3) are arranged parallel to each other, and the sliding block (4) slides up and down along the sliding groove (7) under the elastic force of the elastic reset member (3).

6. The automatic tensioning structure according to claim 5, characterized in that: It also comprises an elastic guide column (6), the elastic reset member (3) is sleeved on the elastic guide column (6), and the elastic guide column (6) passes through the connecting seat (5) and is vertically arranged.

7. The automatic tensioning structure according to any one of claims 1 to 6, characterized in that: It also comprises a support plate (8), the support plate (8) being arranged above the tension block (2) and arranged parallel to the mounting seat (1), and a height limiting member (9) being vertically arranged on the support plate (8) for limiting the rising height of the tension block (2).

8. A handling device, characterized in that: include: A chassis (12), a travel drive device (13) arranged on the chassis (12), a lifting and reversing structure, and an automatic tensioning structure as described in any one of claims 1 to 6, wherein the output shaft of the travel drive device (13) is connected to the lifting and reversing structure, the automatic tensioning structure is arranged on the chassis (12) and abuts against the lifting and reversing structure; and the lifting and reversing structure is transmission-connected to a travel component (18) arranged on the periphery of the handling equipment.

9. The handling equipment according to claim 8, characterized in that: The lifting and reversing structure comprises a driving sprocket (17) and a driven sprocket (15); the driving sprocket (17) is drivingly connected to the output shaft of the travel drive device (13); the driving sprocket (17) and the driven sprocket (15) are drivingly connected via a wound transmission belt (10); the driven sprocket (15) is sleeved on a transmission shaft (16) and drives the transmission shaft (16) to rotate under the drive of the travel drive device (13); travel components (18) are provided at both ends of the transmission shaft (16); and the automatic tensioning structure abuts against the transmission belt (10).

10. The handling equipment according to claim 9, characterized in that: The lifting and reversing structure also includes a lifting drive device, and the transmission shaft (16) moves up and down under the drive of the lifting and reversing drive device to achieve the reversing movement of the transport equipment.

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