Sand box trolley positioning device

Abstract

The utility model relates to the technical field of casting conveying equipment, in particular to a sand box trolley positioning device which comprises a mounting base, an adjusting plate is movably and adjustably arranged on the upper side of the mounting base, a movable frame is movably arranged on the upper side of the adjusting plate, an arc-shaped connecting rod is hinged to the rear side of the movable frame, and the bottom end of the arc-shaped connecting rod is rotatably connected with the upper side of the adjusting plate. When the telescopic end of the telescopic rod stretches out forwards, the first clamping piece can be pushed to rotate forwards with the rotating shaft as the axis, meanwhile, the opposite force of the telescopic rod can act on the movable frame, the movable frame synchronously moves backwards and pulls the two second clamping pieces to rotate backwards with the rotating shaft as the axis, and the first clamping piece and the second clamping pieces are opened and flattened; when the trolley transmission shaft is located above the first clamping piece and the second clamping piece which are opened, the telescopic end of the telescopic rod retracts, the first clamping piece and the second clamping piece are pulled to rotate upwards oppositely to form an included angle, the trolley transmission shaft is clamped, the trolley can be stably located on the track, and the use stability of the trolley is improved.

Description

Technical Field

[0001] This utility model relates to a sand box trolley positioning device, and pertains to the technical field of casting conveying equipment. Background Technology

[0002] The casting production line requires facilities such as transfer lines and sand box transfer trolleys to move and change sand boxes. After the sand box trolley transports the lower cavity of the sand box to the core-setting station, the sand core is placed into the lower cavity of the sand box by the core-setting machine or lifting clamp. Then the lower cavity of the sand box is transferred to the box-closing station, where the box-closing machine combines the lower cavity of the sand box with the upper cavity, and then the casting, cooling and other processes are carried out. However, the existing technology lacks a displacement and positioning structure for the sand box trolley, which leads to errors in sand box displacement and line changing. The sand box cannot be accurately positioned and is prone to collisions. For example, a sand box transfer trolley with Chinese patent announcement number CN213944863U uses a hydraulic cylinder to push a pressure block to clamp the sand box in the center, so that the sand box can be stably stopped on a single wheel. However, it mainly uses a motor to drive the movement and displacement of the sand box trolley. When it needs to stop at a designated position, it cannot effectively position the trolley. During the operation of loading and unloading cores, the sand box trolley is still prone to deviation and cannot be stably placed on the track. It is also inconvenient to use. Therefore, it is necessary to design a sand box trolley positioning device. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sand box trolley positioning device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a sand box trolley positioning device, including a mounting base, an adjustment plate is movably adjusted on the upper side of the mounting base, a movable frame is movably arranged on the upper side of the adjustment plate, and an arc-shaped connecting rod is hinged to the rear side of the movable frame, with the bottom end of the arc-shaped connecting rod rotatably connected to the upper side of the adjustment plate.

[0005] A telescopic rod is rotatably mounted on the movable frame. The telescopic rod is positioned forward and its telescopic end is rotatably connected to a first clamping piece. Multiple second clamping pieces are hinged to the front end of the movable frame. A rotating shaft is rotatably mounted on the front side of the adjusting plate. The rotating shaft is rotatably passed through the lower sides of the first and second clamping pieces respectively.

[0006] Based on the above technical solution, the telescopic rod has an integrally fixed rod end, which is connected to a U-shaped plate. The first clamping piece is hinged in the middle to the front side of the U-shaped plate. A threaded connecting rod is fixed to the rear side of the U-shaped plate. A threaded sleeve is movably sleeved on the rod end, and the threaded sleeve is threadedly tightened to the threaded connecting rod.

[0007] Based on the above technical solution, the diameter of the rear ring of the threaded sleeve is adapted to the end of the rod, and the front end of the rod is fixed with a locking protrusion. The diameter of the locking protrusion is smaller than the diameter of the front ring of the threaded sleeve and larger than the diameter of the rear ring of the threaded sleeve.

[0008] Based on the above technical solution, upright plates are installed on the front and rear sides respectively. The two upright plates are located on the front and rear sides of the adjustment plate. Screws are threaded through the upright plates, and one end of the screw abuts against the front and rear sides of the adjustment plate respectively.

[0009] Based on the above technical solution, the adjustment plate is provided with multiple adjustment through holes on the left and right sides, and is locked to the mounting base by bolts passing through the adjustment through holes.

[0010] Based on the above technical solution, multiple top posts are installed on the upper side of the adjustment plate, and rubber pads are provided on the upper side of the top posts. Each of the top posts is located below the rotation path of the first clamping plate and the second clamping plate.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] When the telescopic rod extends forward, it can push the first clamping plate to rotate forward around the pivot. At the same time, the reverse force of the telescopic rod can act on the movable frame, causing the movable frame to move backward synchronously and pull the two second clamping plates to rotate backward around the pivot. This opens and flattens the first and second clamping plates. When the trolley drive shaft is above the opened first and second clamping plates, the telescopic rod retracts, pulling the first and second clamping plates to rotate upward relative to each other to form an angle and lock the trolley drive shaft. This can stably position the trolley on the track and improve its stability in use.

[0013] Secondly, the telescopic rod is equipped with a U-shaped plate to connect with the first clamping piece, and the telescopic end of the telescopic rod is screwed into the threaded connecting rod on one side of the U-shaped plate through a threaded sleeve. This not only makes it easy to use and install, but also allows for unilateral disassembly and assembly during later maintenance and replacement.

[0014] Finally, since the adjusting plate is equipped with multiple adjusting through holes to be locked with the mounting base bolts, the displacement of the adjusting plate can be adjusted back and forth, and the screws can be used to further limit the front and rear sides of the adjusting plate, thereby improving its stability. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0018] Figure 3 This is a schematic diagram of the connection structure between the telescopic rod and the U-shaped plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the positioning state structure of the first clamping piece 41 and the second clamping piece of this utility model;

[0020] In the diagram: 1. Mounting base; 2. Adjustment plate; 21. Adjustment through hole; 22. Vertical plate; 23. Screw; 3. Movable frame; 31. Arc-shaped connecting rod; 4. Telescopic rod; 40. Rod end; 401. U-shaped plate; 402. Threaded connecting rod; 403. Threaded sleeve; 404. Locking protrusion; 41. First locking piece; 5. Second locking piece; 6. Rotating shaft; 7. Top column. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please refer to this document. Figures 1-4 This utility model provides a technical solution for a sand box trolley positioning device: it includes a mounting base 1, which is installed in the middle of the track and located below the trolley. An adjustment plate 2 is movably adjusted on the upper side of the mounting base 1, and a movable frame 3 is movably mounted on the upper side of the adjustment plate 2. An arc-shaped connecting rod 31 is hinged to the rear side of the movable frame 3, and the bottom end of the arc-shaped connecting rod 31 is rotatably connected to the upper side of the adjustment plate 2. A telescopic rod 4 is rotatably mounted on the upper shaft of the movable frame 3. The telescopic rod 4 can be a linear telescopic accessory such as a pneumatic, hydraulic, or electric push rod, which is not described in detail here. The telescopic rod 4 is set forward, and a first clamping piece 41 is rotatably connected to the telescopic end. Two second clamping pieces 5 are hinged to the front end of the movable frame 3. A rotating shaft 6 is rotatably mounted on the front side of the adjustment plate 2. The rotating shaft 6 is rotatably passed through the lower side of the first clamping piece 41 and the second clamping piece 5 respectively. In this way, when the telescopic rod 4 extends or retracts, it can simultaneously push the first clamping piece 41 and the second clamping piece 5 to rotate downwards in opposite directions to open and flatten, or rotate upwards relative to form an angle, which is used for positioning the trolley drive shaft.

[0023] In this embodiment, the telescopic rod 4 has an integrally fixed rod end 40 at its telescopic end, which is connected to a U-shaped plate 401. The first clamping piece 41 is hinged in the middle to the front side of the U-shaped plate 401, and a threaded connecting rod 402 is fixed to the rear side of the U-shaped plate 401. A threaded sleeve 403 is movably sleeved on the rod end 40, and the threaded sleeve 403 is threadedly tightened to the threaded connecting rod 402. In this way, during use and installation, the threaded sleeve 403 can be quickly connected to the threaded connecting rod 402 of the U-shaped plate 401 by rotating it. During later maintenance and replacement, one side of the telescopic rod 4 or the first clamping piece 41 can be disassembled and installed separately, making use and installation simple and convenient.

[0024] The threaded sleeve 403 has a rear ring diameter that is adapted to slide on the rod end 40. A locking flange 404 is fixed to the front end of the rod end 40. The diameter of the locking flange 404 is smaller than the diameter of the front ring of the threaded sleeve 403 but larger than the diameter of the rear ring of the threaded sleeve 403. This allows the threaded sleeve 403 to slide back and forth and rotate on the rod end 40. When the threaded sleeve 403 slides forward, the locking flange 404 can enter the inner side through the front ring of the threaded sleeve 403 and lock the edge of the rear ring to prevent it from falling off. The connection is achieved when the threaded sleeve 403 is screwed onto the threaded connecting rod 402. Multiple adjustment through holes 21 are respectively provided on the left and right sides of the adjusting plate 2, and... Bolts pass through the adjustment through hole 21 and are locked to the mounting base 1, allowing for front-to-back adjustment of the adjustment plate 2. Two upright plates 22 are installed on the front and rear sides of the adjustment plate 2. Each upright plate 22 has a threaded screw 23 threaded through it. One end of each screw 23 abuts against the front and rear sides of the adjustment plate 2. These screws 23 further limit the movement of the adjustment plate 2, improving its stability. Multiple top posts 7 are installed on the upper side of the adjustment plate 2, with rubber pads on their upper sides. Each top post 7 is located below the rotation path of the first clamping plate 41 and the second clamping plate 5, supporting the lower side of the opened and leveled first clamping plate 41 and the second clamping plate 5.

[0025] A more detailed explanation of how positioning works:

[0026] When the trolley is in a stationary state, that is, before it has moved above the first clamping plate 41 and the second clamping plate 5, the first clamping plate 41 and the second clamping plate 5 are open and flat. Specifically, when the telescopic rod 4 extends forward, it can push the first clamping plate 41 to rotate forward around the pivot 6. At the same time, the reverse force of the telescopic rod 4 can act on the movable frame 3, causing the movable frame 3 to move backward synchronously and pull the two second clamping plates 5 to rotate backward around the pivot 6, so that the first clamping plate 41 and the second clamping plate 5 are open and flat. At this time, the height of the first clamping plate 41 and the second clamping plate 5 is not higher than the height of the trolley drive shaft.

[0027] When the trolley is in the clamped and positioned state, the trolley drive shaft travels along the guide rail to above the first clamping plate 41 and the second clamping plate 5, which are opened and leveled. The telescopic end of the telescopic rod 4 retracts. Based on the same principle, the first clamping plate 41 and the second clamping plate 5 are pulled to rotate upward relative to each other to form a certain angle. At this time, the first clamping plate 41 and the second clamping plate 5 are higher than the height of the trolley drive shaft, which can clamp the trolley drive shaft. This can stably position the trolley on the track and improve its stability in use.

[0028] It should be noted that this utility model mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using existing components and structures that can achieve the corresponding functions.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sand box trolley positioning device, comprising a mounting base (1), characterized in that: The mounting base (1) is movably adjustable with an adjustment plate (2) on the upper side. The adjustment plate (2) is movably adjustable with a movable frame (3) on the upper side. The movable frame (3) is hinged with an arc-shaped connecting rod (31) on the rear side, and the bottom end of the arc-shaped connecting rod (31) is rotatably connected to the upper side of the adjustment plate (2). The movable frame (3) is rotatably mounted with a telescopic rod (4), which is set forward and has a first clamping piece (41) rotatably connected to its telescopic end. The front end of the movable frame (3) is hinged with multiple second clamping pieces (5). The front side of the adjusting plate (2) is rotatably mounted with a rotating shaft (6), which is rotatably passed through the lower side of the first clamping piece (41) and the second clamping piece (5).

2. The sand box trolley positioning device according to claim 1, characterized in that: The telescopic rod (4) has a rod end (40) integrally fixed at its telescopic end. The rod end (40) is connected to a U-shaped plate (401). The first clamping piece (41) is hinged in the middle to the front side of the U-shaped plate (401). A threaded connecting rod (402) is fixed on the rear side of the U-shaped plate (401). A threaded sleeve (403) is movably sleeved on the rod end (40). The threaded sleeve (403) is threadedly screwed into the threaded connecting rod (402).

3. The sand box trolley positioning device according to claim 2, characterized in that: The diameter of the rear opening of the threaded sleeve (403) is adapted to the diameter of the rod end (40). The front end of the rod end (40) is fixed with a locking protrusion (404). The diameter of the locking protrusion (404) is smaller than the diameter of the front opening of the threaded sleeve (403) and larger than the diameter of the rear opening of the threaded sleeve (403).

4. The sand box trolley positioning device according to claim 1, characterized in that: The front and rear sides are respectively equipped with upright plates (22), and the two upright plates (22) are located on the front and rear sides of the adjusting plate (2). The upright plates (22) are threaded with screws (23), and the opposite ends of the screws (23) abut against the front and rear sides of the adjusting plate (2).

5. A sand box trolley positioning device according to claim 1, characterized in that: The adjustment plate (2) has multiple adjustment through holes (21) on its left and right sides respectively, and is locked to the mounting base (1) by bolts passing through the adjustment through holes (21).

6. The sand box trolley positioning device according to claim 1, characterized in that: Multiple top posts (7) are installed on the upper side of the adjustment plate (2), and rubber pads are provided on the upper side of the top posts (7). Each top post (7) is located below the rotation path of the first clamping piece (41) and the second clamping piece (5).

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