Quick tensioning mechanism and vibrating screen

Abstract

The utility model discloses a quick tensioning mechanism which comprises a cylinder body and a rotating body, two opposite notches are formed in the outer edge of the cylinder body, and the surfaces of the notches gradually rise from the starting point end to the terminal point end to form inclined planes; a pull rod is fixed in the rotating body, and the rotating body is provided with an inserting cylinder capable of being inserted into the cylinder body and protruding parts arranged on the two sides of the inserting cylinder. The utility model relates to the technical field of vibrating screens, in use, a pull rod and an end can extend into an equipment shell, an operator does not need to enter the equipment, and only needs to use a wrench to drive a rotating body to rotate outside the equipment shell, the rotating body and the pull rod move back and forth in a barrel, and the rotating body slides along an inclined surface through a convex part of the rotating body; the screen cloth is pressed or separated by the pressing plate, and the pressing plate can be fixed and loosened. Compared with a traditional screw or pin fixing mode, the operation speed is higher, the dismounting operation process of the screen is simplified, and the screen replacing efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically a rapid tensioning mechanism and a vibrating screen. Background Technology

[0002] A vibrating screen is a widely used piece of equipment across various industries, primarily for screening, grading, and removing impurities from materials. The working principle of a vibrating screen is to utilize the excitation force generated by a vibrating motor to cause the screen mesh to vibrate at high frequency, thereby achieving material screening. As the core component of a vibrating screen, the way the screen mesh is fixed directly affects the equipment's operating efficiency and screening effect.

[0003] In existing technologies, the screen mesh of vibrating screens is mainly fixed inside the equipment casing using screws or pins, secured by pressure plates. This method has certain limitations in practical applications. First, when the screen mesh needs to be replaced, operators need to enter the equipment to disassemble each screw or pin, a cumbersome, time-consuming, and labor-intensive process. Furthermore, if no operation is performed inside, the mesh may not be fully secured, resulting in a loose screen mesh and affecting the screening effect. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a rapid tensioning mechanism and a vibrating screen, which solves the problem that the fixing and disassembly of the screen mesh of the existing vibrating screen is relatively cumbersome.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid tensioning mechanism, comprising a cylinder and a rotating body;

[0006] Two opposing cuts are formed on the outer edge of the cylinder. The surface of the cuts gradually rises from the starting end to the ending end to form an inclined slope. The starting end of each cut is connected to the ending end of the opposite cut to form an abutting part. The abutting part has a starting abutting surface connected to the starting end of each cut and an ending abutting surface connected to the ending end of each cut.

[0007] A pull rod is fixed inside the rotating body; the rotating body has a tube that can be inserted into the cylinder, and protrusions on both sides of the tube; wherein, when the rotating body is rotated in both directions, each of the protrusions slides on the inclined plane along the direction from the starting contact surface of the cut to the ending contact surface of the cut or along the direction from the ending contact surface of the cut to the starting contact surface of the cut, so as to adjust the gap distance between the rotating body and the cylinder, thereby driving the pull rod to move back and forth in the first direction.

[0008] Preferably, the first end of the pull rod is provided with an end head, which extends in a second direction to form an abutment portion, wherein the second direction is perpendicular to the first direction.

[0009] Preferably, the side wall surface of the pull rod is fixed on the rotating body by a second limiting member.

[0010] Preferably, the outer wall surface of the pull rod is provided with an annular slot at a part of the cylinder body; a first limiting member is fixed on the inner end surface of the cylinder body and slides in the annular slot.

[0011] Preferably, the inner cavity of the rotating body is provided with a spring sleeved on the outer side of the pull rod, a first end of the spring abuts against the inner wall surface of the rotating body, and a second end of the spring is fixed in the rotating body by a fixing member.

[0012] Preferably, the fixing member comprises a movable gasket capped on the second end of the spring, the outer side of the movable gasket is tightly abutted against a movable nut, and the movable nut is screwed on the tail end of the pull rod.

[0013] Preferably, the rotating body is circumferentially formed with a screwing part.

[0014] Preferably, the cylinder body is provided with a fixing seat at an end away from the rotating body.

[0015] A vibrating screen comprises the quick tensioning mechanism, the vibrating screen comprises a device shell and a screen cloth and a pressing plate arranged in the device shell, the pressing plate is sleeved on the head end of the pull rod and abuts against the abutting part of the head end, and the pull rod moves forward and backward in the first direction to loosen or fix the screen cloth on the device shell.

[0016] Preferably, the inner wall surface of the device shell is provided with a positioning block, and the pressing plate abuts against the positioning block when the pressing plate carrying the screen cloth is fixed on the device shell.

[0017] The quick tensioning mechanism and the vibrating screen have the following advantages: compared with the prior art, the pull rod and the head end can be inserted into the device shell during use, the operator does not need to enter the device, and only needs to use a wrench to drive the rotating body to rotate outside the device shell, the rotating body and the pull rod move forward and backward in the cylinder body, the convex part of the rotating body slides along the inclined surface, the pressing plate is pressed against the screen cloth or separated from the screen cloth, and the pressing plate can be fixed and loosened. Compared with the traditional screw or pin fixing mode, the operation speed is faster, the disassembly operation process of the screen is simplified, and the screen replacement efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic view of the device shell on which the screen cloth is fixed by the tensioning mechanism and the pressing plate according to the present application;

[0019] Figure 2 FIG. 3 is a schematic view of the exploded structure of the tensioning mechanism according to the present application;

[0020] Figure 3 It is the three-dimensional structure schematic view of the cylinder and the rotating member of the utility model;

[0021] Figure 4 It is the schematic view of the limiting groove in the cylinder of the utility model;

[0022] Figure 5 It is the schematic view of the tensioning mechanism after combination of the utility model;

[0023] Figure 6 It is the use state view of the tensioning mechanism on the equipment shell of the utility model.

[0024] Mark explanation in drawing

[0025] 100, equipment shell, 200, screen cloth, 300, pressing plate, 400, positioning block.

[0026] 1, pull rod, 2, cylinder, 21, cutout, 22, inclined surface, 23, abutting part, 24, end abutting surface, 25, start abutting surface, 3, rotating body, 31, insertion cylinder, 32, protruding part, 33, screwing part, 4, end head, 5, first limiting member, 6, movable nut, 7, spring, 8, annular slot, 9, second limiting member, 10, fixed seat. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. As long as the effects of the utility model can be achieved, various changes can be made to the implementation solutions.

[0028] The components in the case are sequentially connected by the personnel in the field, and the specific connection and operation sequence should be referred to the following working principle. The detailed connection means is the known technology in the field, and the following mainly introduces the working principle and process.

[0029] Reference Figures 1-6 A kind of quick tensioning mechanism and vibrating screen are described.

[0030] The embodiment discloses a kind of quick tensioning mechanism, specifically as shown in Figures 1-5 .

[0031] As shown in Figure 2 , the tensioning mechanism includes pull rod 1, cylinder 2 and rotating body 3. Pull rod 1 is fixed in rotating body 3, and penetrates cylinder 2, and second sealing ring is arranged between pull rod 1 and cylinder 2.

[0032] The first end of the pull rod 1 is provided with an end head 4, which extends in a second direction to form an abutting part. The abutting part of the end head 4 abuts against an object. In specific implementation, the abutting part is pressed against the pressure plate 300.

[0033] In one feasible embodiment, the side wall of the pull rod 1 is fixed to the rotating body 3 by a second limiting member 9. When the rotating body 3 rotates, it can drive the pull rod 1 to rotate.

[0034] The outer wall of the pull rod 1 has an annular groove 8 on the portion of the cylinder 2; the inner end face of the cylinder 2 is fixed with a first limiting member 5 by an internal hexagon screw. It should be noted that the length of the annular groove 8 is greater than the length of movement of the insert 31 within the cylinder 2. The first limiting member 5 is used to limit the rotation angle of the pull rod 1 and the end 4. When the protrusion 32 slides on the inclined surface 22 from the starting contact surface 25 to the ending contact surface 24, the first limiting member 5 slides laterally within the annular groove 8, limiting the rotation angle of the pull rod 1 and the end 4, so that the pull rod 1 and the end 4 rotate from the first angle to the second angle and stop, or rotate from the second angle to the first angle and stop.

[0035] A fixed seat 10 is provided at the end of the cylinder 2 away from the rotating body 3. The fixed seat 10 is fixed to an object. In specific implementation, the fixed seat 10 is fixed to the outer wall of the equipment housing 100, and the pull rod 1 extends into the equipment housing 100. A first sealing ring is provided between the fixed seat 10 and the equipment housing 100.

[0036] like Figure 3 As shown, two opposing cuts 21 are formed on the outer edge of the cylinder 2. The surface of the cuts 21 gradually rises from the starting end to the ending end to form an inclined slope 22. The starting end of each cut 21 is connected to the ending end of the opposite cut 21 to form an abutting part 23. The abutting part 23 has a starting abutting surface 25 connected to the starting end of each cut 21 and an ending abutting surface 24 connected to the ending end of each cut 21.

[0037] The rotating body 3 has a plug 31 that can be inserted into the cylinder 2, and protrusions 32 on both sides of the plug 31. When the rotating body 3 is rotated in both directions, each protrusion 32 slides on the inclined surface 22 along the direction from the starting contact surface 25 of the cut 21 to the ending contact surface 24 of the cut 21 or along the direction from the ending contact surface 24 of the cut 21 to the starting contact surface 25 of the cut 21, so as to adjust the gap distance between the rotating body 3 and the cylinder 2, thereby driving the pull rod 1 to move back and forth in a first direction. The first direction is perpendicular to the second direction.

[0038] In one embodiment, the rotating body 3 has a circumferentially formed screwing portion 33. In use, the rotating body 3 is rotated by rotating the screwing portion 33 with a wrench. The cross-section of the screwing portion 33 is hexahedral, and the rotating body 3 is driven to rotate when the wrench is used.

[0039] The inner cavity of the rotating body 3 is provided with a spring 7 sleeved outside the pull rod 1, the first end of the spring 7 abuts against the inner wall surface of the rotating body 3, and the second end is fixed in the rotating body 3 through a fixing member. The fixing member comprises a movable gasket covering the second end of the spring 7, the outer side of the movable gasket is tightly abutted with a movable nut 6, and the movable nut 6 is screwed at the tail end of the pull rod 1. When the rotating body 3 rotates and moves backward along the inclined surface 22 in the first direction, the pull rod 1 is simultaneously moved. After locking the workpiece, the spring 7 provides a reverse force to always ensure that the rotating body 3 tightly abuts against the cylinder 2 and is not loosened, and the whole mechanism is always in a locked state.

[0040] The embodiment further discloses a vibrating screen, which is specifically shown in Figure 1 and Figure 6 .

[0041] The vibrating screen comprises the quick tensioning mechanism, and the vibrating screen comprises an equipment shell 100 and a screen cloth 200 and a pressing plate 300 arranged in the equipment shell 100. The pressing plate 300 is sleeved at the first end of the pull rod 1 and abuts against the abutting portion of the end head 4. When the pull rod 1 moves forward and backward in the first direction, the screen cloth 200 is loosened or fixed on the equipment shell 100.

[0042] The inner wall surface of the equipment shell 100 is provided with a positioning block 400. When the pressing plate 300 carries the screen cloth 200 and is fixed on the equipment shell 100, the pressing plate 300 abuts against the positioning block 400.

[0043] The working principle of the embodiment is as follows: the fixing seat 10 is fixed on the equipment shell 100. At this time, the pull rod 1 penetrates through the equipment shell 100 and the pressing plate 300, the end head 4 is clamped on the pressing plate 300, and the bottom of the pressing plate 300 is pressed against the edge of the screen cloth 200.

[0044] The rotating body 3 is rotated in the forward and reverse directions by using a wrench to rotate the rotating portion 33. At this time, the protruding portion 32 of the rotating body 3 slides on the inclined surface 22 from one end to the other end, so that the rotating body 3 and the pull rod 1 move forward and backward in the rotating state in the cylinder 2, and the end head 4 rotates with the pull rod 1. When the pull rod 1 moves backward, the end head 4 pulls the pressing plate 300 to make the screen cloth 200 abut against the positioning block 400. When the pull rod 1 moves forward, the pressing plate 300 loses the pressing force of the end head 4, and the screen cloth 200 loses the pressing force of the pressing plate 300 and is separated from the equipment shell 100.

[0045] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rapid tensioning mechanism, characterized in that, include: The cylindrical body (2) has two opposing cuts (21) formed on its outer edge. The cuts (21) gradually rise from the starting end to the ending end to form an inclined slope (22). The starting end of each cut (21) is connected to the ending end of the opposite cut (21) to form an abutting part (23). The abutting part (23) has a starting abutting surface (25) connected to the starting end of each cut (21) and an ending abutting surface (24) connected to the ending end of each cut (21). A rotating body (3) has a pull rod (1) fixed inside it; the rotating body (3) has a plug (31) that can be inserted into a cylinder (2) and protrusions (32) on both sides of the plug (31); wherein, when the rotating body (3) is rotated in the forward and reverse directions, each of the protrusions (32) slides on the inclined plane (22) along the direction from the starting contact surface (25) of the cut (21) to the ending contact surface (24) of the cut (21) or along the direction from the ending contact surface (24) of the cut (21) to the starting contact surface (25) of the cut (21) to adjust the gap distance between the rotating body (3) and the cylinder (2), thereby driving the pull rod (1) to move back and forth in the first direction.

2. The rapid tensioning mechanism according to claim 1, characterized in that: The first end of the pull rod (1) is provided with an end head (4), which extends in a second direction to form an abutment portion, wherein the second direction is perpendicular to the first direction.

3. The rapid tensioning mechanism according to claim 2, characterized in that: The side wall of the pull rod (1) is fixed to the rotating body (3) by the second limiting member (9).

4. The rapid tensioning mechanism according to claim 3, characterized in that: The outer wall of the pull rod (1) has an annular groove (8) on the part of the cylinder (2); a first limiting member (5) is fixed on the inner end face of the cylinder (2), and the first limiting member (5) slides in the annular groove (8).

5. A rapid tensioning mechanism according to claim 1, characterized in that: The inner cavity of the rotating body (3) is provided with a spring (7) sleeved on the outside of the pull rod (1). The first end of the spring (7) abuts against the inner wall surface of the rotating body (3), and the second end is fixed inside the rotating body (3) by a fastener.

6. A rapid tensioning mechanism according to claim 5, characterized in that: The fastener includes a movable washer that covers the second end of the spring (7), and a movable nut (6) is pressed against the outside of the movable washer. The movable nut (6) is screwed to the tail end of the pull rod (1).

7. The rapid tensioning mechanism according to claim 1, characterized in that: The rotating body (3) has a circumferentially formed screwing part (33).

8. A rapid tensioning mechanism according to claim 1, characterized in that: A fixed seat (10) is provided at the end of the cylinder (2) away from the rotating body (3).

9. A vibrating screen, the vibrating screen comprising a rapid tensioning mechanism as described in any one of claims 1 to 8, characterized in that: The vibrating screen includes a housing (100), a screen cloth (200) disposed inside the housing (100), and a pressure plate (300). The pressure plate (300) is sleeved on the first end of the pull rod (1) and abuts against the end (4). When the pull rod (1) moves back and forth in the first direction, it loosens or fixes the screen cloth (200) on the housing (100).

10. A vibrating screen according to claim 9, characterized in that: The inner wall of the equipment housing (100) is provided with a positioning block (400). When the pressure plate (300) carrying the screen cloth (200) is fixed on the equipment housing (100), it abuts against the positioning block (400).

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