A vibrating screen rubber shock spring

Abstract

The utility model relates to a kind of shock absorption technology technical field, concretely relates to a kind of vibrating screen rubber shock absorbing spring. Including by a plurality of compression unit series into one's body shock absorber, shock absorber upper end is fixed with upper sleeve, upper sleeve upper portion is internally machined with internal thread, upper sleeve lower end is internally machined with four edge hole, shock absorber lower end is fixed with lower sleeve, lower sleeve is slidably provided with connecting rod, connecting rod penetrates lower sleeve, connecting rod upper end is fixed with four edge head, four edge head can be connected in four edge hole after going up, connecting rod lower end is machined with four edge block. By the four edge head of connecting rod top and the clamping design of the four edge hole of upper sleeve, rigid fixation of upper sleeve is realized in bolt tightening process. This structure can effectively offset the torque generated when bolt rotates, avoid the deformation or damage of rubber shock absorbing spring due to stress distortion, while ensuring axial centering during threaded connection, greatly improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction technology, specifically to a rubber vibration damping spring for a vibrating screen. Background Technology

[0002] Some vibrating screens are installed within a frame, with the excitation source mounted on the screen itself. However, during operation, the rigid connection between the screen and the frame causes both to vibrate together, resulting in excessive energy consumption and significant vibrational forces on the ground. Furthermore, since the frame is typically a welded rigid structure, the vibration from the screen directly impacts its reliability, potentially causing damage and posing safety hazards. Therefore, vibration damping devices are necessary at the connection between the screen and the frame.

[0003] Patent document CN205605703U discloses a spring support device for a vibrating screen, comprising: an upper spring support, a lower spring support, a damping spring, and a positioning spring movable plate. The positioning spring movable plate is bolted to both the upper and lower spring supports, and the damping spring is installed between the upper and lower positioning spring movable plates. This vibrating screen spring support device is a split type. Replacing the spring requires raising the equipment by the height of the spring positioning ring plus the length of the spring compression, which is at least approximately 50mm, and then moving the spring positioning movable plate. This presents the problem of time-consuming and labor-intensive spring replacement.

[0004] To address the aforementioned technical problems, patent document CN208512994U discloses a vibration damping device for a vibrating screen. The device includes a rubber damping spring, a positioning column, fasteners, a spacer, and a positioning pin. One end of the rubber damping spring is fixedly connected to the spacer and can be fixedly connected to the vibrating screen via the fasteners. The other end of the rubber damping spring can be movably connected to a frame for mounting the vibrating screen via the positioning column. Due to the use of the positioning column and positioning pin structure, the vibration damping device for the vibrating screen makes spring replacement very convenient during use; only the vibrating screen needs to be raised a few millimeters to complete the replacement, achieving a time-saving and labor-saving effect. However, when connecting the bolt to the spacer, because the rubber damping spring is relatively soft, it is inconvenient to stabilize the spacer using the rubber damping spring, and the connection strength between the bolt and the spacer cannot be effectively guaranteed, making the bolt prone to loosening during the operation of the vibrating screen. Utility Model Content

[0005] The main purpose of this utility model is to provide a vibrating screen rubber shock absorber spring that can improve the stability after installation and is easy to disassemble and replace.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A vibrating screen rubber damping spring includes a damping component consisting of multiple compression units connected in series. An upper sleeve is fixed inside the upper end of the damping component. An internal thread is machined inside the upper part of the upper sleeve. A four-sided hole is machined inside the lower end of the upper sleeve. A lower sleeve is fixed inside the lower end of the damping component. A connecting rod is slidably arranged inside the lower sleeve. The connecting rod passes through the lower sleeve. A four-sided head is fixed at the upper end of the connecting rod. After the four-sided head moves upward, it can be engaged in the four-sided hole. A four-sided block is machined at the lower end of the connecting rod.

[0008] Specifically, the quadrangular block is machined with limiting holes that penetrate the quadrangular block.

[0009] Specifically, the upper kit includes an upper insert tube, which is inserted and fixed inside the upper end of the shock absorber. An upper convex ring is fixed to the upper end of the upper insert tube, and the lower end of the upper convex ring contacts the upper end of the shock absorber.

[0010] Specifically, the lower assembly includes a lower insert tube, which is inserted and fixed inside the lower end of the shock absorber. A lower convex ring is fixed to the lower end of the lower insert tube, and the upper end of the lower convex ring contacts the lower end of the shock absorber.

[0011] Specifically, the upper insertion tube and the upper convex ring are integrally formed.

[0012] Specifically, the lower insertion tube and the lower convex ring are integrally formed.

[0013] Specifically, the outer side of the upper insertion tube and the lower end of the upper convex ring are fixedly connected by multiple reinforcing bars.

[0014] Specifically, the outer side of the lower insertion tube and the upper end of the lower convex ring are fixedly connected by multiple reinforcing bars.

[0015] Specifically, the stiffener includes a vertical portion and a horizontal portion.

[0016] Specifically, the compression unit is made of rubber, and the shock absorber is injection molded together with the upper and lower kits.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The four-sided head at the top of the connecting rod engages with the four-sided hole of the upper component, achieving rigid fixation of the upper component during bolt tightening. This structure effectively counteracts the torque generated during bolt rotation, preventing deformation or damage to the rubber shock-absorbing spring due to torsion under stress, while ensuring axial alignment during threaded connections, significantly improving installation efficiency.

[0019] 2. The through-holes on the four-sided blocks of the lower assembly allow for the insertion of anti-reverse pins, forming a mechanical two-way limit. This design simplifies the fixing process at the frame connection end; during disassembly, simply removing the pins releases the constraint, significantly reducing maintenance time and operational complexity.

[0020] 3. The upper and lower kits are integrally molded with the damping components through injection molding, enabling the metal parts and rubber materials to form a molecular-level bond. This process not only improves the interfacial bonding strength but also disperses stress concentration through the series compression unit structure, avoiding the risk of delamination under long-term vibration conditions.

[0021] 4. The reinforcing ribs on the outer sides of the upper and lower components form a three-dimensional reinforcing mesh, which increases the shear resistance between the insertion tube and the convex ring, and also creates an interlocking effect through injection molding to fill the gap. This structure significantly improves the tensile strength of the metal-rubber interface, effectively coping with high-frequency impact loads.

[0022] 5. The design of the upper and lower convex rings contacting the end face of the shock absorber creates a self-aligning effect. Combined with the deep embedding of the insertion tube, this ensures that no precise calibration is required when replacing the kit. Damaged kits can be removed and replaced individually, reducing overall maintenance costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention.

[0024] Figure 2 This is a top view of the present invention.

[0025] Figure 3 for Figure 2 Sectional view along the AA direction.

[0026] Figure 4 This is a schematic diagram of the above kit.

[0027] Figure 5 This is a schematic diagram of the following kit.

[0028] The parts in the attached diagram are named as follows: 1. Compression unit, 2. Upper kit, 201. Upper convex ring, 202. Upper insert tube, 3. Lower kit, 301. Lower convex ring, 302. Lower insert tube, 4. Connecting rod, 5. Four-sided head, 6. Four-sided hole, 7. Four-sided block, 8. Limiting hole, 9. Rib. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1: Refer to Figures 1-3 As shown, a vibrating screen rubber damping spring includes a damping component consisting of multiple compression units 1 connected in series. The compression unit 1 is made of rubber.

[0031] The upper end of the shock absorber is fixed with an upper kit 2, and the upper part of the upper kit 2 is machined with internal threads.

[0032] The lower end of the upper component 2 has a square hole 6 machined inside. The lower component 3 is fixed inside the lower end of the shock absorber. A connecting rod 4 is slidably arranged inside the lower component 3, and the connecting rod 4 passes through the lower component 3. A square head 5 is fixed to the upper end of the connecting rod 4. After the square head 5 moves upward, it can be engaged in the square hole 6. A square block 7 is machined at the lower end of the connecting rod 4. A limiting hole 8 is machined on the square block 7, and the limiting hole 8 passes through the square block 7.

[0033] The upper component 2 includes an upper insert tube 202, which is inserted and fixed inside the upper end of the shock absorber. An upper protruding ring 201 is fixed to the upper end of the upper insert tube 202, and the lower end of the upper protruding ring 201 contacts the upper end of the shock absorber. The upper insert tube 202 and the upper protruding ring 201 are integrally formed.

[0034] The lower assembly 3 includes a lower insertion tube 302, which is inserted and fixed inside the lower end of the shock absorber. A lower convex ring 301 is fixed to the lower end of the lower insertion tube 302, and the upper end of the lower convex ring 301 contacts the lower end of the shock absorber. The lower insertion tube 302 and the lower convex ring 301 are integrally formed.

[0035] When installing the rubber damping springs of this vibrating screen, the upper collar is connected to the vibrating screen by bolts. The bolts pass through the holes on the vibrating screen and are threaded into the internal threads of the upper assembly 2. When it is necessary to tighten the bolts and the upper assembly 2, the connecting rod 4 drives the four-sided head 5 and the four-sided block 7 to move upward, so that the four-sided head 5 is inserted into the four-sided hole 6. At this time, the upper assembly 2 can be positioned by the four-sided block, the connecting rod 4, and the four-sided head 5. When the bolts are locked to the upper assembly 2, it can prevent the damping components from being damaged by large torque, and at the same time, it can quickly lock the bolts and the upper assembly 2.

[0036] After the bolts are connected to the upper kit 2, the quadrangular block 7 and the connecting rod 4 pass through the holes on the frame, and the anti-reverse pin is installed into the limiting hole 8.

[0037] Example 2: Based on Example 1, referring to... Figure 4 and Figure 5 As shown, the outer side of the upper insertion tube 202 and the lower end of the upper convex ring 201 are fixedly connected by multiple reinforcing bars 9. The outer side of the lower insertion tube 302 and the upper end of the lower convex ring 301 are fixedly connected by multiple reinforcing bars 9. The reinforcing bars 9 include vertical and horizontal portions. The shock absorber is injection molded with the upper kit 2 and the lower kit 3.

[0038] There is a gap between the upper rib 9 and the upper kit 2, and there is a gap between the lower rib 9 and the lower kit 3. After the shock absorber is injection molded with the upper kit 2 and the lower kit 3, the shock absorber part will be located in the gap, thus improving the connection strength between the upper kit 2 and the lower kit 3 and the shock absorber.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibrating screen rubber shock absorbing spring, comprising a shock absorbing piece integrally connected by a plurality of compression units (1) in series, an upper sleeve piece (2) is fixed in the upper end of the shock absorbing piece, and an internal thread is processed in the upper part of the upper sleeve piece (2), characterized in that, The lower end of the upper kit (2) has a quadrangular hole (6) machined inside. The lower end of the shock absorber is fixed with a lower kit (3). A connecting rod (4) is slidably arranged inside the lower kit (3). The connecting rod (4) passes through the lower kit (3). A quadrangular head (5) is fixed at the upper end of the connecting rod (4). After the quadrangular head (5) moves upward, it can be engaged in the quadrangular hole (6). A quadrangular block (7) is machined at the lower end of the connecting rod (4).

2. The rubber shock spring for a vibrating screen according to claim 1, wherein Limiting holes (8) are machined on the quadrangular block (7), and the limiting holes (8) penetrate the quadrangular block (7).

3. The rubber shock spring for a vibrating screen according to claim 1, wherein The upper assembly (2) includes an upper insert (202), which is inserted and fixed inside the upper end of the shock absorber. An upper protruding ring (201) is fixed at the upper end of the upper insert (202), and the lower end of the upper protruding ring (201) contacts the upper end of the shock absorber.

4. The rubber shock spring for a vibrating screen according to claim 1, wherein The lower assembly (3) includes a lower insert (302), which is inserted and fixed inside the lower end of the shock absorber. A lower convex ring (301) is fixed at the lower end of the lower insert (302), and the upper end of the lower convex ring (301) contacts the lower end of the shock absorber.

5. The rubber shock spring for a vibrating screen according to claim 3, wherein The upper insertion tube (202) and the upper convex ring (201) are integrally formed.

6. The rubber shock spring for a vibrating screen according to claim 4, wherein The lower insertion tube (302) and the lower convex ring (301) are integrally formed.

7. The rubber shock spring for a vibrating screen according to claim 3, wherein The outer side of the upper insertion tube (202) and the lower end of the upper convex ring (201) are fixedly connected by multiple reinforcing bars (9).

8. The rubber shock spring for a vibrating screen according to claim 4, wherein The outer side of the lower insertion tube (302) and the upper end of the lower convex ring (301) are fixedly connected by multiple reinforcing bars (9).

9. A vibrating screen rubber shock spring according to claim 7 or 8, characterised in that, The reinforcing bar (9) includes a vertical part and a horizontal part.

10. The rubber shock spring for a vibrating screen as set forth in claim 1, wherein The compression unit (1) is made of rubber, and the shock absorber is injection molded together with the upper kit (2) and the lower kit (3).

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