A jaw plate for a jaw crusher

Abstract

This utility model relates to a jaw plate for a jaw crusher, comprising a jaw plate body with multiple racks spaced apart on the jaw plate body. Each rack is connected to the jaw plate body via a connector, which includes a slot, a rod, and a limiting block. The slot is recessed rearward from the front side of the jaw plate body and has an open top. Multiple limiting grooves are provided on the left and right sides of the slot. The rod corresponds to the slot and is inserted into it, with its upper end connected to the corresponding rack. A blind hole is recessed rearward in the middle of the front side of the rod, and a sliding rod is slidably installed within the blind hole. A sliding groove is provided on the side of the rod opposite the opening of each limiting groove, and a limiting block is provided within the sliding groove. One end of the limiting block is connected to the side of the sliding groove via a spring, and the other end extends into the corresponding limiting groove. One end of the spring on the limiting block is connected to a pull rope, and the other end of the pull rope passes through the side of the blind hole and connects to the sliding rod. This utility model solves the problem of needing to replace the entire jaw plate after localized wear of the racks on the jaw plate.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to a jaw plate for a jaw crusher. Background Technology

[0002] After being crushed, quartz sand ore can be obtained into quartz sand particles of a certain size for subsequent production. Jaw crusher is a commonly used quartz sand ore crushing device. Jaw crusher completes the crushing of materials by simulating the movement of animal jaws. It mainly consists of two jaw plates, a moving jaw and a stationary jaw, forming a crushing chamber in which quartz sand ore is squeezed and crushed.

[0003] The jaw plate rack is a key structure for jaw crushers to achieve efficient crushing. However, after long-term use, the racks on the jaw plate will wear in some areas, affecting the crushing effect and requiring replacement. However, multiple racks are generally integrally formed with the jaw plate. When the racks on the jaw plate are partially damaged, the entire jaw plate needs to be replaced, which is costly. Summary of the Invention

[0004] This invention addresses the problem of needing to replace the entire jaw plate after localized wear of the rack on the jaw plate; it provides a jaw plate for a jaw crusher that allows for a detachable connection between the rack and the jaw plate, facilitating the replacement of the rack after wear.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A jaw plate for a jaw crusher includes a jaw plate body with multiple racks spaced apart on the jaw plate body. Each rack is connected to the jaw plate body via a connector. The connector includes a slot, a rod, and a limiting block. The slot is recessed rearward from the front side of the jaw plate body and has an open top. Multiple limiting grooves are provided on the left and right sides of the slot. The rod corresponds to the slot and is inserted into the slot. The upper end of the rod is connected to the corresponding rack. A blind hole is recessed rearward in the middle of the front side of the rod. A sliding rod is slidably installed in the blind hole. A sliding groove is provided on the side of the rod opposite the opening of each limiting groove. A limiting block is provided in the sliding groove. One end of the limiting block is connected to the side of the sliding groove via a spring, and the other end extends into the corresponding limiting groove. One end of the spring on the limiting block is connected to a pull rope, and the other end of the pull rope passes through the side of the blind hole and is connected to the sliding rod.

[0007] Furthermore, the slot is an isosceles trapezoidal slot, the width of the upper opening of the slot is smaller than the width of the bottom surface, and there is a gap between the rear end of the slot and the rear side of the jaw plate.

[0008] Furthermore, the slide bar is provided with U-shaped grooves on both the left and right sides, and one end of each pull rope that extends into the blind hole is connected to the side of the U-shaped groove on the same side.

[0009] Furthermore, the length of the slide rod is less than the length of the blind hole, and the front end of the locking rod is recessed with a receiving hole that connects to the front opening of the blind hole. A screw is threaded onto the slide rod, and the rear end of the screw is rotatably connected to the rear side of the blind hole, while the front end is connected to a drive plate located in the receiving hole. A cross-shaped groove is provided on the front side of the drive plate.

[0010] Furthermore, when the rear end of the slide bar contacts the rear side of the blind hole, the spring in each slide groove is in its natural state, and the free end of the limiting block in each slide groove extends into the corresponding limiting groove.

[0011] Furthermore, when the front end of the slide bar contacts the drive plate, the spring in each slide groove is in a compressed state, and the free end of each limiting block is located in its respective slide groove.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] When this utility model is in use, after any rack wears down, the sliding rod on the rack-connected lever moves toward the drive plate, which allows multiple limiting blocks on the lever to disengage from the limiting groove on the slot, thus detaching the lever from the jaw plate body. This facilitates the replacement of the rack without requiring the replacement of the entire jaw plate.

[0014] The rack of this invention is easily connected and disassembled to the jaw plate via a locking rod, which improves efficiency and reduces the replacement cost of the rack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the jaw plate body of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection between the rack and the locking rod of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the rack, locking rod, and limiting block of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection between the slide rod and the screw rod of this utility model;

[0020] Figure 6 This is a sectional front view of the connection between the rack and the jaw plate of this utility model;

[0021] Figure 7 This is a right-side sectional view of the connection between the screw and the corresponding locking rod of this utility model;

[0022] Figure 8 This is a schematic diagram of the connection between the limiting block, spring, and pull rope of this utility model.

[0023] The attached diagram is labeled as follows: 1. Jaw plate body, 2. Rack, 3. Slot, 4. Locking rod, 5. Limiting block, 6. Limiting groove, 7. Blind hole, 8. Sliding rod, 9. Sliding groove, 10. Spring, 11. Pull rope, 12. U-shaped groove, 13. Receiving hole, 14. Drive plate, 15. Screw, 16. Cross-shaped groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 8 As shown, a jaw plate of a jaw crusher includes a jaw plate body 1. Multiple racks 2 are spaced apart on the jaw plate body 1. Each rack 2 is a rod with an arc-shaped top surface and a straight bottom surface. Each rack 2 is connected to the jaw plate body 1 via a connector, which includes a slot 3, a lever 4, and a limiting block 5. The slot 3 is recessed from the front side of the jaw plate body 1 and open at the top. Multiple limiting grooves 6 are provided on the left and right sides of the slot 3. The limiting grooves 6 are rectangular grooves, and the multiple limiting grooves 6 on the left side of the slot 3 are symmetrical to those on the right side. The lever 4 corresponds to the slot 3 and is inserted into it. The upper end of the lever 4 is connected to the corresponding rack 2, and the bottom surface of the rack 2 is flush with the jaw plate body. 1. The top surface contacts the locking rod 4. A blind hole 7 is recessed in the middle of the front side. The blind hole 7 is a rectangular hole with an open front end. A sliding rod 8 is provided in the blind hole 7. The sliding rod 8 is a long strip rod that slides in contact with the blind hole 7 from the side. A sliding groove 9 is provided on the side of the locking rod 4 opposite to the opening of each limiting groove 6. The sliding groove 9 is a rectangular groove that matches the diameter of the corresponding limiting groove 6. A limiting block 5 is provided in the sliding groove 9. The limiting block 5 is a rectangular block that slides in contact with the sliding groove 9. One end of the limiting block 5 is connected to the side of the sliding groove 9 near the blind hole 7 via a spring 10, and the other end extends into the corresponding limiting groove 6. One end of the spring 10 on the limiting block 5 is connected to a pull rope 11. The other end of the pull rope 11 passes through the side of the blind hole 7 and is connected to the sliding rod 8.

[0026] The slot 3 is an isosceles trapezoidal slot. The width of the upper opening of the slot 3 is smaller than the width of the bottom surface. There is a gap between the rear end of the slot 3 and the rear side of the jaw plate 1. When the rear end of the locking rod 4 contacts the rear side of the slot 3, the opening of each limiting groove 6 faces the corresponding sliding groove 9.

[0027] The slide bar 8 has U-shaped grooves 12 on both its left and right sides. The openings of the two U-shaped grooves 12 are opposite to each other. One end of each pull rope 11 that extends into the blind hole 7 is connected to the side of the U-shaped groove 12 on the same side.

[0028] The length of the slide rod 8 is less than the length of the blind hole 7. The front end of the locking rod 4 is recessed with a receiving hole 13 that connects to the front opening of the blind hole 7. The receiving hole 13 is a circular hole with a diameter larger than the diameter of the outer circle of the front opening of the blind hole 7. A screw 15 is threaded onto the slide rod 8. The rear end of the screw 15 is rotatably connected to the rear side of the blind hole 7, and the front end is connected to a drive plate 14 located in the receiving hole 13. The drive plate 14 is a circular plate that corresponds to the receiving hole 13. A cross-shaped groove 16 is provided on the front side of the drive plate 14.

[0029] When the rear end of the slide bar 8 contacts the rear side of the blind hole 7, the spring 10 in each slide groove 9 is in its natural state, and the free end of the limiting block 5 in each slide groove 9 extends into the corresponding limiting groove 6.

[0030] When the front end of the slide bar 8 contacts the drive plate 14, the spring 10 in each slide groove 9 is in a compressed state, and the free end of each limit block 5 is located in the slide groove 9, so as not to affect the insertion of the locking rod 4 into the locking groove 3.

[0031] Before installation, insert the screwdriver into the cross-shaped groove 16 on the front drive plate 14 of the corresponding rack 4, drive the drive plate 14 to rotate, drive the screw 15 to rotate, and drive the connected slide rod 8 to move forward. When the slide rod 8 moves forward, the slide rod 8 is pulled by the pull rope to move the connected limit block 5 in the direction of the slide rod 8. The spring 10 corresponding to each limit block 5 is compressed until the front end of the slide rod 8 contacts the drive plate 14. At this time, the free end of each limit block 5 is located in the corresponding slide groove 9.

[0032] During installation, the locking rod 4 connected to each rack 2 is inserted into the corresponding slot 3 from front to back. When the rear end of the locking rod 4 contacts the rear side of the slot 3, the opening of each limiting slot 6 faces the opening of a sliding groove 9. Then, the screw 15 is rotated in the opposite direction with a screwdriver, so that the sliding rod 8 connected to the screw 15 moves backward to contact the rear end of the blind hole 7. When the sliding rod 8 moves backward, it no longer pulls the pull rope 11. Under the restoring force of the spring 10 connected to each limiting block 5, the free end of each limiting block 5 moves toward the corresponding limiting groove 6 and extends into the limiting groove 6. At this time, the locking rod 4 corresponding to each rack 2 completes the connection with the jaw plate body 1.

[0033] This utility model is installed on a jaw crusher. When any rack 2 wears down, the screw 15 on the corresponding locking rod of the worn rack 2 is rotated, so that the sliding rod 8 connected to the screw 15 contacts the drive plate 14. At this time, the multiple limiting blocks 5 on the locking rod 4 corresponding to the rack 2 are disengaged from the corresponding limiting grooves 6, the locking rod 4 is released from the fixed connection with the jaw plate 1, and the locking rod 4 is pulled out from the front opening of the locking groove 3, so that the rack 2 can be removed and a new rack 2 can be replaced later.

[0034] The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A jaw plate for a jaw crusher, characterized in that The jaw plate includes a jaw plate body (1), on which a plurality of racks (2) are spaced apart. Each rack (2) is connected to the jaw plate body (1) via a connector. The connector includes a slot (3), a lever (4), and a limiting block (5). The slot (3) is recessed from the front side of the jaw plate body (1) and open at the top. A plurality of limiting grooves (6) are provided on the left and right sides of the slot (3). The lever (4) corresponds to the slot (3) and is inserted into the slot (3). The upper end of the lever (4) is connected to the corresponding rack (2). The front middle of the lever (4) has a blind hole (7) recessed to the rear. A sliding rod (8) is provided in the blind hole (7) and slides back and forth. A sliding groove (9) is provided on the side of the lever (4) opposite to the opening of each limiting groove (6). A limiting block (5) is provided in the sliding groove (9). One end of the limiting block (5) is connected to the side of the sliding groove (9) via a spring (10), and the other end extends into the corresponding limiting groove (6). One end of the limiting block (5) is connected to a pull rope (11) via a spring (10). The other end of the pull rope (11) passes through the side of the blind hole (7) and is connected to the sliding rod (8).

2. A jaw plate for a jaw crusher as claimed in claim 1, characterised in that, The slot (3) is an isosceles trapezoidal slot. The width of the upper opening of the slot (3) is smaller than the width of the bottom surface. There is a gap between the rear end of the slot (3) and the rear side of the jaw plate (1).

3. A jaw plate for a jaw crusher as claimed in claim 1, characterised in that, The slide bar (8) is provided with U-shaped grooves (12) on both the left and right sides, and one end of each pull rope (11) extending into the blind hole (7) is connected to the side of the U-shaped groove (12) on the same side.

4. A jaw plate for a jaw crusher as claimed in claim 1, characterised in that, The length of the slide rod (8) is less than the length of the blind hole (7). The front end of the clamp rod (4) is recessed with a receiving hole (13) that connects to the front opening of the blind hole (7). A screw rod (15) is threaded onto the slide rod (8). The rear end of the screw rod (15) is rotatably connected to the rear side of the blind hole (7), and the front end is connected to the drive plate (14) located in the receiving hole (13). A cross-shaped groove (16) is provided on the front side of the drive plate (14).

5. A jaw plate for a jaw crusher as claimed in claim 4, characterised in that, When the rear end of the slide bar (8) contacts the rear side of the blind hole (7), the spring (10) in each slide groove (9) is in its natural state, and the free end of the limiting block (5) in each slide groove (9) extends into the corresponding limiting groove (6).

6. A jaw plate for a jaw crusher as claimed in claim 4, characterised in that, When the front end of the slide bar (8) contacts the drive plate (14), the spring (10) in each slide groove (9) is in a compressed state, and the free end of each limit block (5) is located in the slide groove (9).

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