Improved tensioning device for jaw crusher

Abstract

The utility model relates to the technical field of jaw crushers, in particular to an improved tensioning device for a jaw crusher, which is characterized by comprising a tensioning hydraulic cylinder and a mounting seat, the end part of a piston rod of the tensioning hydraulic cylinder is hinged with a movable jaw frame, two hanging blocks which are symmetrically arranged are fixedly arranged on the peripheral surface of a cylinder body of the tensioning hydraulic cylinder, and the mounting seat is fixedly connected with the piston rod of the tensioning hydraulic cylinder. Two hanging grooves are formed in the mounting seat, the two hanging blocks are movably hung in the two hanging grooves respectively, limiting plates used for limiting outward movement of the hanging blocks are fixedly mounted at the positions, at the two hanging grooves, of the mounting seat, and pressing mechanisms are arranged on the limiting plates. According to the utility model, the hanging block can be inwards pushed and pressed through the pressing mechanism, so that the tensioning hydraulic cylinder can be inwards pushed and pressed, and the piston rod of the tensioning hydraulic cylinder can drive the toggle plate, the toggle plate seat and the base to move for an expected effect after extending, so that a gap which is large enough is formed between the base and the wedge block; and smooth installation of the cushion block is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of jaw crusher technology, and more specifically to an improved tensioning device for jaw crushers. Background Technology

[0002] Existing tensioning devices for jaw crushers typically have a piston rod end hinged to the movable jaw frame of the tensioning hydraulic cylinder. The cylinder body is movably hooked into the mounting slot of the mounting base via a hook block. Only a limiting plate is installed in the mounting slot to prevent the hook block from detaching from the slot. Figure 5 As shown, during the use of the jaw crusher, when the jaw crusher cannot reduce the discharge opening to the specified size, a pad 54 needs to be inserted between the base 52 and the wedge 53. In order to install the pad 54, the tensioning hydraulic cylinder 1 needs to be filled with oil so that the piston rod of the tensioning hydraulic cylinder 1 extends and drives the moving jaw frame 51 to swing, thereby causing the toggle plate 55, toggle plate seat 56, and base 52 to move forward under the action of gravity, thus creating a corresponding gap between the base 52 and the wedge 53. However, at this time, the tensioning hydraulic cylinder 1 will have a tendency to move backward due to the reaction force, which will cause the piston rod of the tensioning hydraulic cylinder 1 to extend and drive the toggle plate 55, toggle plate seat 56, and base 52 to move a distance that does not reach the expected effect. As a result, the gap between the base 52 and the wedge 53 is not large enough, which will affect the smooth installation of the pad 54. Therefore, further improvement is needed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an improved tensioning device for jaw crushers that can push and press the hanging block inward through the pressing mechanism, thereby pushing and pressing the tensioning hydraulic cylinder inward, so as to ensure that the piston rod of the tensioning hydraulic cylinder can drive the elbow plate, elbow plate seat and base to move a distance as expected after extension, so as to create a sufficiently large gap between the base and the wedge block, effectively ensuring the smooth installation of the pad block.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An improved tensioning device for a jaw crusher includes a tensioning hydraulic cylinder and a mounting base. The piston rod end of the tensioning hydraulic cylinder is hinged to the movable jaw frame. Two symmetrically arranged hanging blocks are fixedly provided on the outer circumferential surface of the cylinder body of the tensioning hydraulic cylinder. The mounting base is provided with two hanging slots, and the two hanging blocks are movably hung in the two hanging slots respectively. A limiting plate is fixedly installed on the mounting base at both hanging slots to limit the outward movement of the hanging blocks. The limiting plate is provided with a pressing mechanism that can be used to push and press the hanging blocks inward.

[0005] Furthermore, the clamping mechanism includes a pressure block and a pushing component. The pressure block is located on one side of the opening of the hanging slot and is slidably connected to the limiting plate through a sliding component. The pushing component is located on the limiting plate and is used to push the pressure block to move towards the side closer to the hanging block.

[0006] Furthermore, the sliding assembly includes multiple sliding rods and multiple strip-shaped sliding holes. The multiple strip-shaped sliding holes are arranged in parallel and spaced apart on the limiting plate. The multiple sliding rods correspond one-to-one with the multiple strip-shaped sliding holes and are adapted to each other. The sliding rod includes a rod body and an end plate fixedly disposed at one end of the rod body. The other end of the sliding rod passes through the corresponding strip-shaped sliding hole and is fixedly connected to the pressure block.

[0007] Furthermore, the slide rod is a sliding bolt, and the pressure block is provided with a first fixed threaded hole. The other end of the sliding bolt is threadedly connected to the first fixed threaded hole of the pressure block.

[0008] Furthermore, there are two slide bars and two strip-shaped sliding holes.

[0009] Furthermore, the pushing assembly includes a fixed plate and at least one pushing bolt. The fixed plate is fixedly mounted on the limiting plate. The fixed plate and the hanging block are respectively located on both sides of the pressure block. The pushing bolt is threadedly connected to the fixed plate, and the end of the pushing bolt can abut against one side surface of the pressure block.

[0010] Furthermore, the push bolts are two in number and spaced apart vertically.

[0011] Furthermore, the fixing plate is provided with a push thread hole for threaded connection with the push bolt.

[0012] Furthermore, the pushing component also includes a pull rod, and a through hole is provided on the fixed plate. One end of the pull rod is fixedly connected to the pressure block and the other end passes through the through hole.

[0013] Furthermore, the pull rod is a pull bolt, and the pressure block is provided with a second fixed threaded hole, one end of which is threaded into the second fixed threaded hole of the pressure block.

[0014] As described above, the improved tensioning device for a jaw crusher provided by this utility model has the following beneficial effects: When the jaw crusher cannot reduce the discharge opening to the specified size, the clamping mechanism can be used to push and clamp the hanging block inward, thereby pushing and clamping the tensioning hydraulic cylinder inward. This makes the installation position of the tensioning hydraulic cylinder relatively stable. In this way, when the tensioning hydraulic cylinder is filled with oil, so that the piston rod of the tensioning hydraulic cylinder extends and drives the moving jaw frame to swing, the tensioning hydraulic cylinder will not tend to move backward due to the reaction force. This ensures that after the piston rod of the tensioning hydraulic cylinder extends, it can drive the elbow plate, elbow plate seat and base to move a distance that meets the expected effect, thereby creating a sufficiently large gap between the base and the wedge block, effectively ensuring the smooth installation of the pad block. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an improved tensioning device for a jaw crusher according to the present invention.

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a three-dimensional structural diagram of the clamping mechanism connected to the limiting plate.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed plate.

[0019] Figure 5 This is a schematic diagram showing the installation position of an improved tensioning device for a jaw crusher according to the present invention on the jaw crusher.

[0020] In the diagram: 1-Tensioning hydraulic cylinder; 11-Hanging block; 2-Mounting seat; 21-Hanging groove; 3-Limiting plate; 4-Clamping mechanism; 41-Pressure block; 42-Pushing assembly; 421-Fixing plate; 4211-Pushing threaded hole; 4212-Through hole; 422-Pushing bolt; 423-Tie rod; 43-Sliding assembly; 431-Slide rod; 432-Strip sliding hole; 51-Moving jaw frame; 52-Base; 53-Wedge block; 54-Padded block; 55-Elbow plate; 56-Elbow plate seat. Detailed Implementation

[0021] The present invention will be further described below through specific embodiments.

[0022] like Figures 1 to 5 As shown, the improved tensioning device for a jaw crusher according to this utility model includes a tensioning hydraulic cylinder 1 and a mounting base 2. The piston rod end of the tensioning hydraulic cylinder 1 is hinged to the movable jaw frame 51. Two symmetrically arranged hanging blocks 11 are fixedly provided on the outer peripheral surface of the cylinder body of the tensioning hydraulic cylinder 1. The mounting base 2 is provided with two hanging grooves 21, and the two hanging blocks 11 are respectively movably hung in the two hanging grooves 21. A limiting plate 3 is fixedly installed on the mounting base 2 at each of the two hanging grooves 21 to limit the outward movement of the hanging blocks 11. The limiting plate 3 is provided with a pressing mechanism 4 that can be used to push and press the hanging blocks 11 inward.

[0023] When the jaw crusher cannot reduce the discharge opening to the specified size, the clamping mechanism 4 can be used to push and press the hanging block 11 inward, thereby pushing and pressing the tensioning hydraulic cylinder 1 inward. This makes the installation position of the tensioning hydraulic cylinder 1 relatively stable. In this way, when the tensioning hydraulic cylinder 1 is filled with oil, so that the piston rod of the tensioning hydraulic cylinder 1 extends and drives the moving jaw frame 51 to swing, the tensioning hydraulic cylinder 1 will not have a tendency to move backward due to the reaction force. This ensures that after the piston rod of the tensioning hydraulic cylinder 1 extends, it can drive the elbow plate 55, elbow plate seat 56 and base 52 to move the expected distance. This creates a sufficiently large gap between the base 52 and the wedge block 53, effectively ensuring the smooth installation of the pad block 54.

[0024] The pressing mechanism 4 includes a pressing block 41 and a pushing component 42. The pressing block 41 is located on one side of the opening of the hanging groove 21 and is slidably connected to the limiting plate 3 through a sliding component 43. The pushing component 42 is located on the limiting plate 3 and is used to push the pressing block 41 to move towards the side closer to the hanging block 11.

[0025] The sliding assembly 43 includes multiple sliding rods 431 and multiple strip-shaped sliding holes 432. The multiple strip-shaped sliding holes 432 are arranged parallel and spaced apart on the limiting plate 3. The multiple sliding rods 431 correspond one-to-one with the multiple strip-shaped sliding holes 432 and are adapted to each other. Each sliding rod 431 includes a rod body and an end plate fixedly disposed at one end of the rod body. The other end of the sliding rod 431 passes through the corresponding strip-shaped sliding hole 432 and is fixedly connected to the pressure block 41. Preferably, the sliding rod 431 is a sliding bolt. The pressure block 41 is provided with a first fixed threaded hole. The other end of the sliding bolt is threaded into the first fixed threaded hole of the pressure block 41. There are two sliding rods 431 and two strip-shaped sliding holes 432. In this way, a sliding connection between the pressure block 41 and the limiting plate 3 can be realized, effectively ensuring the stability and smoothness of the movement of the pressure block 41, and providing a good guiding effect for the movement of the pressure block 41.

[0026] The pushing assembly 42 includes a fixing plate 421 and at least one pushing bolt 422. The fixing plate 421 is fixedly mounted on the limiting plate 3. The fixing plate 421 and the hanging block 11 are respectively located on both sides of the pressure block 41. The pushing bolt 422 is threadedly connected to the fixing plate 421. The end of the pushing bolt 422 can abut against one side surface of the pressure block 41. Preferably, there are two pushing bolts 422, which are spaced apart vertically. Correspondingly, the fixing plate 421 is provided with a pushing thread hole 4211 for threaded connection with the pushing bolt 422. Thus, by rotating the pushing bolt 422 clockwise and moving it relative to the fixing plate 421 towards one side of the pressure block 41, the pressure block 41 can be pushed towards the side closer to the hanging block 11 until the hanging block 11 is pressed, thereby achieving the effect of pressing the tensioning hydraulic cylinder 1. Its overall structure is simple, easy to install, and convenient to operate.

[0027] In addition, the pushing assembly 42 also includes a pull rod 423. The fixing plate 421 is provided with a through hole 4212. One end of the pull rod 423 is fixedly connected to the pressure block 41 and the other end passes through the through hole 4212. Preferably, the pull rod 423 is a pulling bolt. The pressure block 41 is provided with a second fixed threaded hole. One end of the pulling bolt is threaded into the second fixed threaded hole of the pressure block 41. When it is not necessary to press the tensioning hydraulic cylinder 1, the pushing bolt 422 can be rotated counterclockwise first, so that the pushing bolt 422 moves away from the pressure block 41. Then, by pulling the pull rod 423 backward, the pressure block 41 can be moved away from the hanging block 11 and retracted.

[0028] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An improved tensioning device for a jaw crusher, characterized in that: The device includes a tensioning hydraulic cylinder and a mounting base. The piston rod end of the tensioning hydraulic cylinder is hinged to the movable jaw frame. Two symmetrically arranged hanging blocks are fixedly provided on the outer circumferential surface of the cylinder body. The mounting base is provided with two hanging slots, and the two hanging blocks are movably hung in the two hanging slots respectively. A limiting plate is fixedly installed on the mounting base at each of the two hanging slots to limit the outward movement of the hanging blocks. The limiting plate is provided with a clamping mechanism that can be used to push and press the hanging blocks inward.

2. An improved tensioning device for a jaw crusher according to claim 1, characterized in that: The pressing mechanism includes a pressing block and a pushing component. The pressing block is disposed on one side of the opening of the hanging slot and is slidably connected to the limiting plate through a sliding component. The pushing component is disposed on the limiting plate and is used to push the pressing block to move towards the side closer to the hanging block.

3. An improved tensioning device for a jaw crusher according to claim 2, characterized in that: The sliding assembly includes multiple sliding rods and multiple strip-shaped sliding holes. The multiple strip-shaped sliding holes are arranged in parallel and spaced apart on the limiting plate. The multiple sliding rods correspond one-to-one with the multiple strip-shaped sliding holes and are adapted to each other. Each sliding rod includes a rod body and an end plate fixedly disposed at one end of the rod body. The other end of the sliding rod passes through the corresponding strip-shaped sliding hole and is fixedly connected to the pressure block.

4. An improved tensioning device for a jaw crusher according to claim 3, characterized in that: The slide bar is a sliding bolt, and the pressure block is provided with a first fixed threaded hole. The other end of the sliding bolt is threaded into the first fixed threaded hole of the pressure block.

5. An improved tensioning device for a jaw crusher according to claim 3, characterized in that: The number of the sliding rod and the number of the strip-shaped sliding hole are both two.

6. An improved tensioning device for a jaw crusher according to claim 2, characterized in that: The pushing assembly includes a fixed plate and at least one pushing bolt. The fixed plate is fixedly mounted on the limiting plate. The fixed plate and the hanging block are respectively located on both sides of the pressure block. The pushing bolt is threadedly connected to the fixed plate. The end of the pushing bolt can abut against one side surface of the pressure block.

7. An improved tensioning device for a jaw crusher according to claim 6, characterized in that: The push bolts are two in number and spaced apart vertically.

8. An improved tensioning device for a jaw crusher according to claim 6, characterized in that: The fixing plate is provided with a push thread hole for threaded connection with the push bolt.

9. An improved tensioning device for a jaw crusher according to claim 6, characterized in that: The pushing assembly also includes a pull rod, and the fixed plate has a through hole. One end of the pull rod is fixedly connected to the pressure block and the other end passes through the through hole.

10. An improved tensioning device for a jaw crusher according to claim 9, characterized in that: The pull rod is a pull bolt, and the pressure block is provided with a second fixed threaded hole. One end of the pull bolt is threaded into the second fixed threaded hole of the pressure block.

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