Push-pull tray trolley

Abstract

The push-and-pull tray trolley is simple in structure, convenient to operate, low in cost, suitable for popularization and used for feeding and discharging of the heat treatment furnace material trays. Rollers are arranged at the bottom of the frame, the hook racks are rotatably arranged at the front end and the rear end of the frame, the left side and the right side of each hook rack are respectively provided with a hook, each hook rack is connected with a driving mechanism which drives the hook rack to swing relative to the frame, and the driving mechanism comprises a driving motor arranged on the frame. A disc is fixed to an output shaft of the driving motor, one end of a connecting rod is eccentrically hinged to the disc, the other end of the connecting rod is hinged to the hook frame, the driving motor rotates, the disc rotates, the hook frame is driven by the connecting rod to swing relative to the frame, and the hook is in a horizontal or vertical state.

Description

Technical Field

[0001] The utility model relates to a push-pull tray trolley for pushing and pulling a material tray in and out of a heat treatment furnace. Background Art

[0002] CN219200022U (application number 2023205977756) discloses a push-pull tray trolley, including a frame with rollers at the bottom, a hook component is arranged on the left and right sides of the front and rear ends of the frame, each hook component is connected to a driving mechanism, and the driving mechanism drives the hook component to swing relative to the frame. The hook component includes a swing rod and a hook, one end of the swing rod is fixed on a pivot rotatably arranged on the frame, and the other end of the swing rod is fixed to the hook. The driving mechanism includes a driving motor arranged on the frame, a driving sprocket arranged on the output shaft of the driving motor, a driven sprocket arranged on the pivot, and a chain surrounding the driving sprocket and the driven sprocket. The driving motor is connected to the pivot through a chain transmission mechanism to drive the pivot to rotate, thereby realizing the vertical or horizontal state conversion of the hook. The push-pull tray trolley needs 4 driving mechanisms (including a driving motor, a driving sprocket, a driven sprocket, a chain, etc.) to drive the 4 hook components respectively, and the manufacturing and maintenance costs are high, which is not conducive to promotion. Summary of the invention

[0003] The utility model provides a push-pull tray trolley which has the advantages of simple structure, convenient operation, low cost and suitable for popularization and is used for realizing the loading and unloading of material trays of heat treatment furnaces.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] The push-pull tray trolley comprises a frame with rollers at the bottom, hook frames rotatably arranged at the front and rear ends of the frame, a hook is arranged on the left and right sides of each hook frame, and each hook frame is connected to a driving mechanism for driving the hook frame to swing relative to the frame.

[0006] The driving mechanism includes a driving motor arranged on the frame, a disc is fixed on the output shaft of the driving motor, one end of the connecting rod is eccentrically hinged on the disc, and the other end of the connecting rod is hinged to the hook frame. When the driving motor rotates, the disc rotates, and the hook frame is driven to swing relative to the frame through the connecting rod, so that the hook is in a horizontal or vertical state.

[0007] The above-mentioned push-pull tray trolley drives the output shaft of the motor to rotate at an angle of no more than 180°, so that the hook is in a horizontal or vertical state.

[0008] In the above-mentioned push-pull tray trolley, the two hook racks are connected to the same driving mechanism; driven by the driving mechanism, the hooks on one hook rack are in a horizontal state, and the hooks on the other hook rack are in a vertical state.

[0009] In the above-mentioned push-pull tray trolley, one end of the two connecting rods is hinged on a disc, and the other ends of the two connecting rods are respectively hinged to two hook frames, and the rotation angle of the output shaft of the driving motor does not exceed 180°.

[0010] The push-pull tray trolley is provided with a connecting portion at the bottom of the frame, and the connecting portion is used to be connected to the trolley driving device that drives the frame to move.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the prior art push-pull tray trolley which requires 4 drive mechanisms to drive 4 hooks, the utility model only needs 2 drive mechanisms to drive 4 hooks, which simplifies the structure. In addition, the utility model adopts a crank rocker mechanism composed of a disc, a connecting rod, etc. to replace the chain transmission mechanism composed of a driving sprocket, a driven sprocket, a chain, etc. in the prior art, which has a simpler structure, quick installation, convenient use, and low cost. When two hook racks are connected to the same drive mechanism, only one motor is needed to drive 4 hooks, the structure is very simple, the manufacturing cost is significantly reduced, and it is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the push-pull tray trolley of Example 1.

[0014] Figure 2 This is a top view of the push-pull tray trolley.

[0015] Figure 3 This is a top view of the push-pull tray trolley of Example 1.

[0016] Figure 4 This is a front view of the push-pull tray trolley of Example 2.

[0017] In the accompanying drawings: roller 1, frame 2, hook frame 3, driving mechanism 4, driving motor 41, disc 42, connecting rod 43, connecting part 5, hook 6, cover shell 7. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0019] Embodiment 1:

[0020] like Figure 1-3 The push-pull tray trolley shown comprises a frame 2 with rollers 1 at the bottom, hook frames 3 rotatably (swingingly) arranged at the front and rear ends of the frame, a hook 6 is fixed on each left and right side of each hook frame, and each hook frame 3 is connected to a driving mechanism 4 that drives the hook frame to swing relative to the frame. The bottom of the hook frame 3 is also provided with rollers 1.

[0021] Each driving mechanism 4 includes a driving motor 41 arranged on the frame, a disc 42 is fixed on the output shaft of the driving motor, one end of a connecting rod 43 is eccentrically hinged on the disc, and the other end of the connecting rod 43 is hinged to the hook frame 3. When the driving motor rotates, the disc rotates no more than 180°, and the hook frame 3 is driven by the connecting rod to swing relative to the frame 1, so that the hook 6 is in a horizontal or vertical state. The cover 7 is arranged on the frame to cover the two driving motors 41, and of course, a notch is opened on the cover 7 so as not to hinder the movement of the connecting rod 43.

[0022] A connecting portion 5 is provided at the bottom of the frame, and the connecting portion 5 is used to be connected to a trolley driving device for driving the frame to move.

[0023] Embodiment 2:

[0024] The main difference between Example 2 and Example 1 is that Example 2 has only one driving mechanism 4. A driving motor 41 is provided, a disc 42 is fixed on the output shaft of the driving motor, and two connecting rods 43 respectively hinged to the two hook racks 3 are eccentrically hinged on the disc 42. The two connecting rods 43 can be on the same side of the disc 42, or on both sides of the disc 42. When the hook on one hook rack is in a horizontal state, the hook on the other hook rack is in a vertical state. The output shaft of the driving motor rotates at an angle not exceeding 180°, and the disc rotates at the same angle, driving the two hook racks 3 and the hook 6 to change between the horizontal and vertical states.

[0025] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. Push-pull tray trolley, characterized by: The vehicle comprises a frame with rollers at the bottom, hook frames rotatably arranged at the front and rear ends of the frame, a hook is arranged on the left and right sides of each hook frame, and each hook frame is connected to a driving mechanism for driving the hook frame to swing relative to the vehicle frame. The driving mechanism includes a driving motor arranged on the frame, a disc is fixed on the output shaft of the driving motor, one end of the connecting rod is eccentrically hinged on the disc, and the other end of the connecting rod is hinged to the hook frame. When the driving motor rotates, the disc rotates, and the hook frame is driven to swing relative to the frame through the connecting rod, so that the hook is in a horizontal or vertical state.

2. The push-pull tray trolley according to claim 1, characterized in that: The rotation angle of the output shaft of the driving motor does not exceed 180 degrees, so that the hook is in a horizontal or vertical state.

3. The push-pull tray trolley according to claim 1, characterized in that: The two hook frames are connected to the same driving mechanism; driven by the driving mechanism, the hooks on one hook frame are in a horizontal state, and the hooks on the other hook frame are in a vertical state.

4. The push-pull tray trolley according to claim 3, characterized in that: One end of the two connecting rods is hinged on a disc, and the other ends of the two connecting rods are respectively hinged to two hook frames, and the rotation angle of the output shaft of the driving motor does not exceed 180 degrees.

5. The push-pull tray trolley according to claim 1, characterized in that: A connecting portion is arranged at the bottom of the vehicle frame, and the connecting portion is used to be connected to a trolley driving device that drives the vehicle frame to move.

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