Telescopic cart pulling device

Abstract

The utility model discloses a telescopic car pulling device, which aims to be capable of stretching out and drawing back in two sections, reducing the occupied space and reducing the occupation of the device on the ground when the device is idle while having a longer extension length, and adopts the technical scheme that the telescopic car pulling device comprises a first direction, a fixed seat, a first sliding seat, a second sliding seat and a driving unit, the first sliding seat is connected with the fixed seat, the second sliding seat is connected with the first sliding seat, both the first sliding seat and the second sliding seat can move along the first direction, the second sliding seat is provided with an elastically foldable hook, and the hook is connected with the fixed seat. The driving unit drives the first sliding seat to move along the first direction, so that the first sliding seat is close to or far away from a destination; belongs to the technical field of conveying equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying equipment, and more specifically, relates to a telescopic car pulling device. Background Art

[0002] The steaming cart enters the proofing room or the steaming cabinet basically by relying on a cart pushing device, so as to realize automated operation.

[0003] For example, Patent CN202220150388.3 discloses a steaming cart conveying line, which includes a first cart pushing mechanism and a second cart pushing mechanism arranged side by side in an external proofing room. The moving directions of the first cart pushing mechanism and the second cart pushing mechanism are opposite. Along its moving direction, at least two elastically foldable first hooks are arranged at intervals on the first cart pushing mechanism. The second cart pushing mechanism transports the steaming cart in the external placement area to the first cart pushing mechanism, and the first cart pushing mechanism pushes at least two steaming carts into the external steaming cabinet through the first hooks;

[0004] The above-mentioned conveying line can realize automatic cart pushing and gradually transport the cart to the destination. However, with this structural layout, it is necessary to fix a guide rail on the ground. The guide rail is fixed and will remain on the ground even when no cart pushing operation is carried out. Other equipment cannot pass through the ground where the guide rail is arranged, which brings trouble to the workshop passage. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a telescopic car pulling device, which is designed to be telescopable in two sections. While having a long extended length, it reduces the floor space and the occupation of the ground when the device is idle.

[0006] According to the first aspect of the utility model, it includes a first direction, a fixed seat, a first sliding seat, a second sliding seat and a driving unit. The first sliding seat is connected to the fixed seat, the second sliding seat is connected to the first sliding seat. Both the first sliding seat and the second sliding seat can move along the first direction. An elastically foldable hook is arranged on the second sliding seat. The driving unit drives the first sliding seat to move along the first direction to make the first sliding seat approach or move away from the destination;

[0007] It further includes a first traction unit. When the first sliding seat approaches the destination, the second sliding seat moves relative to the first sliding seat in the first direction and gradually approaches the destination under the action of the first traction unit;

[0008] It further includes a second traction unit. When the first sliding seat moves away from the destination, the second sliding seat moves relative to the first sliding seat in the first direction and gradually moves away from the destination under the action of the second traction unit.

[0009] In the above-mentioned telescopic trolley device, the first traction unit includes a first chain and a first sprocket rotatably arranged at one end of the first sliding seat close to the destination. The first chain is wound around the first sprocket. One end of the first chain is fixedly connected to one end of the fixed seat far from the destination, and the other end of the first chain is fixedly connected to one end of the second sliding seat far from the destination.

[0010] In the above-mentioned telescopic trolley device, the second traction unit includes a second chain and a second sprocket rotatably arranged at one end of the first sliding seat far from the destination. The second chain is wound around the second sprocket. One end of the second chain is fixedly connected to one end of the fixed seat close to the destination, and the other end of the second chain is fixedly connected to one end of the second sliding seat close to the destination.

[0011] In the above-mentioned telescopic trolley device, a first guiding groove for the movement of the first chain is provided at the top of the first sliding seat. A plurality of first supporting wheels are arranged at intervals along the first direction on the fixed seat, and the first supporting wheels are used to support the first chain.

[0012] In the above-mentioned telescopic trolley device, a second guiding groove for the movement of the second chain is provided at the top of the first sliding seat. A plurality of second supporting wheels are arranged at intervals along the first direction on the fixed seat, and the second supporting wheels are used to support the second chain.

[0013] In the above-mentioned telescopic trolley device, the driving unit includes a gear arranged on the fixed seat, a rack arranged on the first sliding seat, and a driving motor for driving the rotation of the gear. The rack extends along the first direction.

[0014] In the above-mentioned telescopic trolley device, a through groove is provided on the fixed seat, and the through groove extends along the first direction. The gear is arranged in the through groove, and the rack is located above the gear;

[0015] A plurality of first guiding wheels are provided on both sides of the fixed seat along the extending direction of the through groove. The plurality of first guiding wheels are arranged at intervals along the extending direction of the through groove and are used to support the movement of the first sliding seat.

[0016] In the above-mentioned telescopic trolley device, guiding sliding grooves are provided on both sides of the first sliding seat along its moving direction. The guiding sliding grooves extend along the first direction. A groove extending along its moving direction is provided at the bottom of the second sliding seat, and the groove is sleeved on the first sliding seat. A plurality of second guiding wheels are provided on both sides of the groove along its extending direction. The plurality of second guiding wheels are arranged at intervals along the extending direction of the groove, and the guiding sliding grooves are in sliding fit with the second guiding wheels.

[0017] In the above telescopic cart device, the second sliding seat is provided with a pulley that can elastically lift and lower. One end of the fixed seat close to the destination is docked with a guide rail, which can cooperate with the pulley, and a preset distance is left between the guide rail and the destination.

[0018] At least one of the technical solutions in the above technical solutions of the present utility model has the following advantages or beneficial effects:

[0019] In the present utility model, a first traction unit and a second traction unit are provided to enable the first sliding seat and the second sliding seat to be linked. When the first sliding seat extends, the second sliding seat will follow and extend, thereby increasing the extension length and enabling the cart to be transported to the destination. Even without fixing the guide rail on the ground, the first sliding seat and the second sliding seat can also slide and extend. When the device is not in operation, the first sliding seat and the second sliding seat can be retracted onto the fixed seat, greatly reducing the occupied space. The device will not always block in front of the destination, and the workshop passage is smoother;

[0020] Compared with the existing telescopic moving mechanism, due to the limitation of the workshop space, this structure does not require an excavation pit for accommodating the drive motor under the fixed seat like the existing structure, and there is no problem of motor damage caused by water accumulation in the pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0022] Figure 1 is a schematic structural view of the first sliding seat and the second sliding seat of the first embodiment of the present utility model when unfolded;

[0023] Figure 2 is the Figure 1 partial enlarged view of A of the

[0024] Figure 3 is an exploded structural view of the first sliding seat and the second sliding seat of the first embodiment of the present utility model when unfolded;

[0025] Figure 4 is a schematic structural view of the first traction unit and the second traction unit of the first sliding seat and the second sliding seat of the first embodiment of the present utility model when unfolded;

[0026] Figure 5 is a schematic structural view of the second sliding seat of the first embodiment of the present utility model.

[0027] Among them, the reference numerals in each figure:

[0028] 1. Fixed seat; 11. First support wheel; 12. Second support wheel; 13. Through groove; 14. First guide wheel; 2. First sliding seat; 21. First guide groove; 22. Second guide groove; 23. Guide sliding groove; 3. Second sliding seat; 31. Groove; 32. Second guide wheel; 33. Pulley; 4. Driving unit; 41. Gear; 42. Rack; 43. Driving motor; 5. Hook; 6. First traction unit; 61. First chain; 62. First sprocket; 7. Second traction unit; 71. Second chain; 72. Second sprocket; 8. Guide rail. Detailed implementation manner

[0029] The following details the implementation manners of the present utility model. The examples of the implementation manners are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0030] The following disclosure provides many different implementation manners or examples for implementing different solutions of the present utility model.

[0031] Referring to Figures 1 to 5 As shown, in an embodiment of the present utility model, a telescopic cart device includes a first direction, a fixed seat 1, a first sliding seat 2, a second sliding seat 3, and a driving unit 4. The first sliding seat 2 is connected to the fixed seat 1, the second sliding seat 3 is connected to the first sliding seat 2, both the first sliding seat 2 and the second sliding seat 3 can move along the first direction, and an elastically foldable hook 5 is provided on the second sliding seat 3. The driving unit 4 drives the first sliding seat 2 to move along the first direction so that the first sliding seat 2 approaches or moves away from the destination;

[0032] It further includes a first traction unit 6. During the process of the first sliding seat 2 approaching the destination, the second sliding seat 3 undergoes relative movement with the first sliding seat 2 in the first direction and gradually approaches the destination under the action of the first traction unit 6;

[0033] It further includes a second traction unit 7. During the process of the first sliding seat 2 moving away from the destination, the second sliding seat 3 undergoes relative movement with the first sliding seat 2 in the first direction and gradually moves away from the destination under the action of the second traction unit 7;

[0034] The first traction unit 6 and the second traction unit 7 are provided to enable the first sliding seat 2 and the second sliding seat 3 to be linked. When the first sliding seat 2 extends, the second sliding seat 3 will follow and extend, thereby increasing the extension length and enabling the trolley to be transported to the destination. Without fixing the guide rail 8 on the ground, the first sliding seat 2 and the second sliding seat 3 can also slide and extend. When the device is not in operation, the first sliding seat 2 and the second sliding seat 3 can be retracted onto the fixed seat 1, greatly reducing the occupied space. The device will not always block in front of the destination, making the workshop passage smoother.

[0035] Specifically, initially, the fixed seat 1, the first sliding seat 2, and the second sliding seat 3 are in a retracted state. Since the hook 5 can be elastically folded, the trolley will straddle the second sliding seat 3 until the trolley moves to the side of the hook 5 close to the destination. Then, the driving unit 4 operates to move the first sliding seat 2 in the direction close to the destination, and the second sliding seat 3 also starts to move in the direction close to the destination synchronously, so that the hook 5 pushes the trolley to the destination. Then, the first sliding seat 2 is retracted, and the second sliding seat 3 follows and retracts.

[0036] This device is generally applied in the proofing workshop. When the humidity inside the proofing workshop reaches 80%, water vapor in the air will precipitate and condense into water droplets on the surface of objects in the workshop and the workshop itself at a relatively low temperature, and gather at the lowest part of the workshop. Due to the space limitation of the workshop, this structure does not require an excavation pit for accommodating the driving unit 4 under the fixed seat 1 compared with the existing structure, and there is no problem of motor damage caused by water accumulation in the pit.

[0037] In this embodiment, the structure of the hook 5 can refer to Patent CN202220150388.3, which will not be elaborated in this application.

[0038] In this embodiment, the first traction unit 6 includes a first chain 61 and a first sprocket 62 rotatably provided at one end of the first sliding seat 2 close to the destination. The first chain 61 is wound around the first sprocket 62. One end of the first chain 61 is fixedly connected to one end of the fixed seat 1 away from the destination, and the other end of the first chain 61 is fixedly connected to one end of the second sliding seat 3 away from the destination;

[0039] The second traction unit 7 includes a second chain 71 and a second sprocket 72 rotatably provided at one end of the first sliding seat 2 away from the destination. The second chain 71 is wound around the second sprocket 72. One end of the second chain 71 is fixedly connected to one end of the fixed seat 1 close to the destination, and the other end of the second chain 71 is fixedly connected to one end of the second sliding seat 3 close to the destination;

[0040] During the process of the first sliding seat 2 approaching the destination, the first sprocket 62 will move along with the first sliding seat 2, thereby pulling the first chain 61 to move. The first chain 61 will then pull the second sliding seat 3 to move. During this process, the second sprocket 72 will also move, but it will not pull the second chain 71.

[0041] During the process of the second sliding seat 3 moving away from the destination, the second sprocket 72 will move along with the second sliding seat 3, thereby pulling the second chain 71 to move. The second chain 71 will then pull the second sliding seat 3 to move. During this process, the first sprocket 62 will also move, but it will not pull the first chain 61.

[0042] In this embodiment, a first guiding groove 21 for the first chain 61 to move is provided at the top of the first sliding seat 2. A plurality of first supporting wheels 11 are arranged at intervals along the first direction on the fixed seat 1. The first supporting wheels 11 are used to support the first chain 61. Since the first chain 61 is flexible, relying on the first supporting wheels 11 and the first guiding groove 21, the first chain 61 can move smoothly.

[0043] Similarly, a second guiding groove 22 for the second chain 71 to move is provided at the top of the first sliding seat 2. A plurality of second supporting wheels 12 are arranged at intervals along the first direction on the fixed seat 1. The second supporting wheels 12 are used to support the second chain 71.

[0044] In this embodiment, the driving unit 4 includes a gear 41 provided on the fixed seat 1, a rack 42 provided on the first sliding seat 2, and a driving motor 43 for driving the gear 41 to rotate. The rack 42 extends along the first direction; when the gear 41 rotates, it drives the rack 42 to move, thereby moving the first sliding seat 2.

[0045] Specifically, a through groove 13 is provided on the fixed seat 1. The through groove 13 extends along the first direction. The gear 41 is arranged in the through groove 13, and the rack 42 is located above the gear 41.

[0046] A plurality of first guiding wheels 14 are provided on both sides of the fixed seat 1 along the extending direction of the through groove 13. The plurality of first guiding wheels 14 are arranged at intervals along the extending direction of the through groove 13 and are used to support the sliding of the first sliding seat 2.

[0047] Therefore, the driving position is in the middle, and the first sliding seat 2 is more stable when sliding. The first guiding wheels 14 on both sides can stably support the movement of the first sliding seat 2. At the same time, it prevents the first sliding seat 2 from deviating.

[0048] In this embodiment, guide chutes 23 are provided on both sides of the first sliding seat 2 along its sliding direction. The guide chutes 23 extend along the sliding direction of the first sliding seat 2. A groove 31 extending along its sliding direction is provided at the bottom of the second sliding seat 3. The groove 31 is sleeved on the first sliding seat 2. A plurality of second guide wheels 32 are provided on both sides of the groove 31 along its extending direction. The plurality of second guide wheels 32 are arranged at intervals along the extending direction of the groove 31. The guide chutes 23 are in sliding fit with the second guide wheels 32 to support the sliding of the second sliding seat 3.

[0049] In this embodiment, in order to limit the position of the cart, a waiting area can be specifically set up for the cart, including two limit plates. The limit plates extend along the conveying direction. A waiting area is constructed between the two limit plates. In the initial state, after the cart crosses the second sliding seat 3, it will enter the waiting area. After the waiting area is full of carts, the first sliding seat 2 starts to slide, so that the second sliding seat 3 pushes the cart out of the waiting area and into the destination.

[0050] When extending, both the first sliding seat 2 and the second sliding seat 3 are suspended. To assist the sliding of the second sliding seat 3, the second sliding seat 3 is provided with an elastically liftable pulley 33. One end of the fixed seat 1 close to the destination is butted with a guide rail 8. The guide rail 8 is located in the waiting area. The guide rail 8 can cooperate with the pulley 33 to support the movement of the second sliding seat 3 within a certain range. A preset distance is left between the guide rail 8 and the destination to ensure that there is enough space between the guide rail 8 and the destination for other equipment in the workshop to pass through after the first sliding seat 2 and the second sliding seat 3 are retracted, ensuring the passage in the workshop.

[0051] In this embodiment, the pulley 33 is liftable by relying on a spring. When the pulley 33 cooperates with the guide rail 8, the spring is compressed. After the pulley 33 leaves the guide rail 8, under the action of the spring, the pulley 33 can contact the ground and continue to support the movement of the second sliding seat 3.

[0052] The guide rail 8 can be a V-shaped guide rail 8, and the pulley 33 is adapted to the V-shaped guide rail 8.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A telescopic cart device, characterized in that, It includes a first direction, a fixed seat, a first sliding seat, a second sliding seat and a driving unit. The first sliding seat is connected to the fixed seat, the second sliding seat is connected to the first sliding seat, and both the first sliding seat and the second sliding seat can move along the first direction. An elastically foldable hook is provided on the second sliding seat. The driving unit drives the first sliding seat to move along the first direction to make the first sliding seat approach or move away from the destination. It further includes a first traction unit. During the process of the first sliding seat approaching the destination, the second sliding seat makes a relative movement with the first sliding seat in the first direction and gradually approaches the destination under the action of the first traction unit. It further includes a second traction unit. During the process of the first sliding seat moving away from the destination, the second sliding seat makes a relative movement with the first sliding seat in the first direction and gradually moves away from the destination under the action of the second traction unit.

2. The telescopic cart device according to claim 1, wherein, The first traction unit includes a first chain and a first sprocket rotatably arranged at one end of the first sliding seat close to the destination. The first chain is wound around the first sprocket. One end of the first chain is fixedly connected to one end of the fixed seat away from the destination, and the other end of the first chain is fixedly connected to one end of the second sliding seat away from the destination.

3. The telescopic cart device according to claim 1, characterized in that, The second traction unit includes a second chain and a second sprocket rotatably arranged at one end of the first sliding seat away from the destination. The second chain is wound around the second sprocket. One end of the second chain is fixedly connected to one end of the fixed seat close to the destination, and the other end of the second chain is fixedly connected to one end of the second sliding seat close to the destination.

4. The telescopic cart device according to claim 2, wherein A first guiding groove for the movement of the first chain is provided at the top of the first sliding seat. A plurality of first supporting wheels are arranged at intervals along the first direction on the fixed seat, and the first supporting wheels are used for supporting the first chain.

5. The telescopic cart device according to claim 3, characterized in that, A second guiding groove for the movement of the second chain is provided at the top of the first sliding seat. A plurality of second supporting wheels are arranged at intervals along the first direction on the fixed seat, and the second supporting wheels are used for supporting the second chain.

6. The telescopic cart device according to claim 1, wherein The driving unit includes a gear arranged on the fixed seat, a rack arranged on the first sliding seat, and a driving motor for driving the gear to rotate. The rack extends along the first direction.

7. The telescopic cart device according to claim 6, wherein, A through groove is provided on the fixed seat, and the through groove extends along the first direction. The gear is arranged in the through groove, and the rack is located above the gear. A plurality of first guiding wheels are provided on both sides of the fixed seat along the extending direction of the through groove. The plurality of first guiding wheels are arranged at intervals along the extending direction of the through groove and are used for supporting the movement of the first sliding seat.

8. The telescopic cart device according to claim 1, characterized in that, Both sides of the first sliding seat along its moving direction are provided with guiding sliding grooves, the guiding sliding grooves extend along the first direction, the bottom of the second sliding seat is provided with a groove extending along its moving direction, the groove is sleeved on the first sliding seat, both sides of the groove along its extending direction are provided with a plurality of second guiding wheels, the plurality of second guiding wheels are arranged at intervals along the extending direction of the groove, and the guiding sliding grooves are in sliding fit with the second guiding wheels.

9. The telescopic cart device according to claim 1, wherein, The second sliding seat is provided with an elastically liftable pulley, one end of the fixed seat close to the destination is butted with a guide rail, the guide rail can cooperate with the pulley, and a preset distance is left between the guide rail and the destination.

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