Crushing gap adjusting device for impact crusher

Abstract

The utility model relates to the field of impact crushers, in particular to a crushing gap adjusting device for an impact crusher, which is characterized by comprising an adjusting hydraulic cylinder and an adjusting screw rod which are arranged side by side, a cylinder body of the adjusting hydraulic cylinder is hinged to the outer side of a crushing bin, and a piston rod of the adjusting hydraulic cylinder extends into the crushing bin and is fixedly connected with a cylinder fork; the cylinder fork is hinged to the impact plate, one end of the adjusting screw rod is hinged to the cylinder fork, and the other end of the adjusting screw rod extends outwards to penetrate out of the crushing bin and is connected to the outer side of the crushing bin through a swing locking mechanism. Through the arrangement of the cylinder fork, only one hinge point needs to be arranged on the impact plate, the stress concentration area on the impact plate can be reduced, meanwhile, through the arrangement of the swing locking mechanism, the stress of the adjusting screw rod can be directly transmitted to the crushing bin, the stress is more uniform, and the overall adjusting reliability can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of impact crusher, specifically relates to a kind of crushing gap adjusting device for impact crusher. BACKGROUND

[0002] As the crusher using impact principle to crush material, impact crusher has the characteristics of simple structure, high reliability, wide application range, etc., and is widely used in mining, chemical industry, construction, railway and other industries, and can be configured in multiple forms according to the type, scale and requirements of finished material of raw material, when working, the rotor rotates at high speed under the drive of motor, the material enters the hammer action area and is crushed by hitting the rotor, then is thrown to the impact plate again for crushing, and then is bounced back to the hammer action area for crushing again.

[0003] In the process of using impact crusher, it is necessary to change the crushing gap between the impact plate and the hammer by the corresponding adjusting device, however, in the existing adjusting device, one end of the adjusting hydraulic cylinder and the adjusting screw is directly hinged with the impact plate, which will lead to two hinge holes to be opened on the impact plate, and will increase the stress concentration area on the impact plate, which is not good for the impact plate, and the other end of the adjusting screw is hung on the adjusting hydraulic cylinder, which will cause the stress of the adjusting screw to be directly concentrated on the adjusting hydraulic cylinder, and the stress is not uniform, which will affect the service life of the adjusting hydraulic cylinder, thus, further improvement is needed. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a crushing gap adjusting device for impact crusher, by the setting of cylinder fork, only one hinge point is needed on the impact plate, which is beneficial to reduce the stress concentration area on the impact plate, and by the setting of swing locking mechanism, the stress of the adjusting screw is directly transmitted to the crushing chamber, and the stress is more uniform, which is beneficial to improve the overall adjusting reliability.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a crushing gap adjusting device for impact crusher, comprising adjusting hydraulic cylinder and adjusting screw arranged side by side, the cylinder body of adjusting hydraulic cylinder is hinged to the outside of crushing chamber, the piston rod of adjusting hydraulic cylinder extends into crushing chamber and is fixedly connected with cylinder fork, the cylinder fork is hinged with impact plate, one end of adjusting screw is hinged with cylinder fork and the other end extends outward and penetrates through crushing chamber and is connected to the outside of crushing chamber through swing locking mechanism.

[0006] Further, a slot is provided on the crushing chamber for the piston rod of adjusting hydraulic cylinder and the adjusting screw to penetrate through.

[0007] Further, the swing locking mechanism comprises an adjusting nut, a bowl-shaped flange and a spherical washer which are sequentially sleeved on the adjusting screw from top to bottom, the adjusting nut is threadedly connected with the adjusting screw, the bowl-shaped flange is provided with a through hole in the center for the adjusting screw to pass through, the spherical washer is provided with a swing hole in the center for the adjusting screw to pass through, the spherical washer is fixedly installed on the outside of the crushing chamber, the spherical washer is provided with an outer convex spherical surface at the upper end, the bowl-shaped flange is provided with an inner concave spherical surface at the lower end which is matched with the outer convex spherical surface and swing-fitted, and the upper end surface of the bowl-shaped flange is a plane.

[0008] Further, the spherical washer is fixedly arranged on the fixing plate, the fixing plate is fixedly installed on the outside of the crushing chamber, and the fixing plate is provided with a first through hole for the piston rod of the adjusting hydraulic cylinder to pass through and a second through hole for the adjusting screw to pass through.

[0009] Further, the fixing plate is provided with a sealing gasket between the fixing plate and the crushing chamber.

[0010] Further, the adjusting nut comprises a sleeve and a nut, the sleeve is provided with a cavity which is open at one end, the nut is fixedly arranged at the opening of the sleeve at one end, the sleeve is sleeved on the other end of the adjusting screw and the nut is threadedly connected with the adjusting screw.

[0011] Further, the inner diameter of the through hole and the inner diameter of the swing hole are both more than 1.4 times of the outer diameter of the adjusting screw.

[0012] Further, the cylinder body of the adjusting hydraulic cylinder is provided with a first hinge shaft which is fixedly arranged on the outer surface of the cylinder body and is symmetrically arranged, the first hinge shaft is rotatably installed in the fixing seat, and the fixing seat is fixedly installed on the outside of the crushing chamber.

[0013] Further, one end of the adjusting screw is fixedly provided with a hinge seat, the hinge seat is provided with a first hinge hole, the cylinder fork is provided with a second hinge hole, and the first hinge hole and the second hinge hole are both provided with a second hinge shaft.

[0014] Further, the cylinder fork is provided with a third hinge hole, the counterattack plate is provided with a fourth hinge hole, and the third hinge hole and the fourth hinge hole are both provided with a third hinge shaft.

[0015] From the above description, the utility model provides a kind of crushing gap adjusting device for impact crusher, with following beneficial effects: by the piston rod end of adjusting hydraulic cylinder and cylinder fork fixed connection, and the one end of adjusting screw is hinged with cylinder fork, then, cylinder fork is hinged with impact plate, thus, only need to set a hinged point on impact plate, it is favorable to reduce the area of stress concentration on impact plate, it is also good for impact plate, and it is favorable to reduce casting cost, while the other end of adjusting screw is directly locked and fixed on the outside of crushing chamber by swing locking mechanism, effectively avoid the stress of adjusting screw directly concentrated on adjusting hydraulic cylinder, not easy to cause impact to the service life of adjusting hydraulic cylinder, can make the stress of adjusting screw directly transmitted to crushing chamber, and stress is more uniform, it is favorable to improve the overall adjustment reliability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model a kind of crushing gap adjusting device for impact crusher.

[0017] Figure 2 It is Figure 1 the local enlarged schematic view of A in.

[0018] Figure 3 It is the structure schematic view of bowl-shaped flange.

[0019] Figure 4 It is the structure schematic view of spherical gasket.

[0020] In the figure: 1-adjusting hydraulic cylinder;2-adjusting screw;3-crushing chamber;31-groove;4-cylinder fork;5-impact plate;6-swing locking mechanism;61-adjusting nut;611-sleeve;612-nut;62-bowl-shaped flange;621-through hole;622-internal concave spherical surface;63-spherical gasket;631-swing hole;632-external convex spherical surface;64-fixing plate;65-sealing gasket;7-fixing seat;8-second hinged shaft;9-third hinged shaft. DETAILED DESCRIPTION

[0021] The utility model is further described below by specific implementation.

[0022] As Figures 1 to 4 shown, the utility model a kind of crushing gap adjusting device for impact crusher, including and side by side arrangement adjusting hydraulic cylinder 1 and adjusting screw 2, the cylinder body of adjusting hydraulic cylinder 1 is hinged to the outside of crushing chamber 3, the piston rod of adjusting hydraulic cylinder 1 extends into the crushing chamber 3 and is fixedly connected with cylinder fork 4, the cylinder fork 4 is hinged with impact plate 5, one end of adjusting screw 2 is hinged with the cylinder fork 4 and another end extends outward and passes out the crushing chamber 3 and is connected to the outside of crushing chamber 3 by swing locking mechanism 6.

[0023] By fixing the piston rod end of the adjusting hydraulic cylinder 1 with the cylinder fork 4, and connecting one end of the adjusting screw rod 2 with the cylinder fork 4, and then connecting the cylinder fork 4 with the counterattack plate 5, only one hinge point is needed on the counterattack plate 5, which is beneficial to reduce the stress concentration area on the counterattack plate 5, and is also good for the counterattack plate 5, and is beneficial to reduce the casting cost, and at the same time, the other end of the adjusting screw rod 2 is directly locked and fixed to the outside of the crushing chamber 3 through the swing locking mechanism 6, which effectively avoids the stress of the adjusting screw rod 2 directly concentrated on the adjusting hydraulic cylinder 1, and is not easy to affect the service life of the adjusting hydraulic cylinder 1, so that the stress of the adjusting screw rod 2 is directly transmitted to the crushing chamber 3, and the stress is more uniform, which is beneficial to improve the overall adjustment reliability.

[0024] In addition, the crushing chamber 3 is provided with a slot 31 for the piston rod of the adjusting hydraulic cylinder 1 and the adjusting screw rod 2 to pass through.

[0025] The swing locking mechanism 6 includes an adjusting nut 61, a bowl-shaped flange 62 and a spherical gasket 63 which are sequentially sleeved on the adjusting screw rod 2 from top to bottom, the adjusting nut 61 is threadedly connected with the adjusting screw rod 2, the bowl-shaped flange 62 is provided with a through hole 621 in the center for the adjusting screw rod 2 to pass through, the spherical gasket 63 is provided with a swing hole 631 in the center for the adjusting screw rod 2 to pass through, the spherical gasket 63 is fixedly installed on the outside of the crushing chamber 3, the spherical gasket 63 is provided with an outer convex spherical surface 632 on the upper end, the bowl-shaped flange 62 is provided with an inner concave spherical surface 622 on the lower end which is matched with the outer convex spherical surface 632 and swing-fitted, and the upper end surface of the bowl-shaped flange 62 is a plane, so that the adjusting nut 61 can be rotated to the corresponding scale, thereby adjusting the crushing gap of the counterattack plate 5, and the swing-fitted outer convex spherical surface 632 of the spherical gasket 63 and the inner concave spherical surface 622 of the bowl-shaped flange 62 can keep the arc surface contact between the spherical gasket 63 and the bowl-shaped flange 62, thereby effectively ensuring the contact area between them, so that when the impact crusher works, the pressure can be uniformly transmitted to the crushing chamber 3 regardless of the swing angle of the adjusting screw rod 2, and the overall stress is more uniform.

[0026] Correspondingly, the spherical gasket 63 is fixedly arranged on a fixed plate 64, the fixed plate 64 is fixedly installed on the outside of the crushing chamber 3, and the fixed plate 64 is provided with a first through hole for the piston rod of the adjusting hydraulic cylinder 1 to pass through and a second through hole for the adjusting screw rod 2 to pass through.

[0027] In addition, the fixed plate 64 is provided with a sealing gasket 65 between the fixed plate 64 and the crushing chamber 3, and the fixed plate 64 can be used to seal the notch 31 of the crushing chamber 3. Through the arrangement of the sealing gasket 65, the sealing performance of the connection between the fixed plate 64 and the crushing chamber 3 can be effectively ensured. Preferably, the sealing gasket 65 is a rubber gasket.

[0028] Correspondingly, the adjusting nut 61 comprises a sleeve 611 and a nut 612. The sleeve 611 is internally provided with a cavity which is open at one end. The nut 612 is fixedly arranged at the opening of the sleeve 611. The sleeve 611 is sleeved on the other end of the adjusting screw 2, and the nut 612 is threadedly connected with the adjusting screw 2. Therefore, the threaded connection between the adjusting nut 61 and the adjusting screw 2 is facilitated, and the sleeve 611 can also protect the other end of the adjusting screw 2.

[0029] Preferably, the inner diameter of the through hole 621 and the inner diameter of the swing hole 631 are both greater than 1.4 times of the outer diameter of the adjusting screw 2. Therefore, the adjusting screw 2 can swing in the through hole 621 and the swing hole 631.

[0030] Correspondingly, the outer surface of the cylinder body of the adjusting hydraulic cylinder 1 is fixedly provided with a first hinge shaft which is symmetrically arranged. The first hinge shaft is rotatably arranged in a fixed seat 7. The fixed seat 7 is fixedly arranged on the outer side of the crushing chamber 3. Therefore, the hinge connection between the cylinder body of the adjusting hydraulic cylinder 1 and the outer side of the crushing chamber 3 is realized. One end of the adjusting screw 2 is fixedly provided with a hinge seat. The hinge seat is provided with a first hinge hole. The cylinder fork 4 is provided with a second hinge hole. The first hinge hole and the second hinge hole are arranged with a second hinge shaft 8. Therefore, the hinge connection between the adjusting screw 2 and the cylinder fork 4 is realized. The cylinder fork 4 is provided with a third hinge hole. The counterattack plate 5 is provided with a fourth hinge hole. The third hinge hole and the fourth hinge hole are arranged with a third hinge shaft 9. Therefore, the hinge connection between the cylinder fork 4 and the counterattack plate 5 is realized.

[0031] The use method of the crushing gap adjusting device for the counterattack type crusher is as follows: when the crushing gap of the counterattack plate 5 needs to be adjusted, the cylinder fork 4 and the counterattack plate 5 can be lifted by controlling the adjusting hydraulic cylinder 1, and the bowl-shaped flange 62 is separated from the spherical gasket 63. Then, the adjusting nut 61 is rotated to the required scale, and then the cylinder fork 4 and the counterattack plate 5 are pressed downward by controlling the adjusting hydraulic cylinder 1, so that the bowl-shaped flange 62 is tightly combined with the spherical gasket 63.

[0032] The above are only some specific embodiments of the present application, but the design concept of the present application is not limited thereto, and any non-essential modification of the present application using this concept shall be deemed to infringe the protection scope of the present application.

Claims

1. A crushing gap adjustment device for an impact crusher, comprising an adjustment hydraulic cylinder and an adjustment screw arranged side by side, the cylinder body of the adjustment hydraulic cylinder being hinged to the outside of the crushing chamber, characterized in that: The piston rod of the adjusting hydraulic cylinder extends into the crushing chamber and is fixedly connected with a cylinder fork, the cylinder fork is hingedly connected with the counterattack plate, one end of the adjusting screw rod is hingedly connected with the cylinder fork and the other end extends out of the crushing chamber and is connected to the outside of the crushing chamber through a swing locking mechanism.

2. A crushing gap adjustment device for an impact crusher according to claim 1, characterized in that The crushing chamber is provided with a slot for the piston rod of the adjusting hydraulic cylinder and the adjusting screw rod to pass through.

3. A crushing gap adjustment device for an impact crusher according to claim 1, characterized in that: The swing locking mechanism comprises an adjusting nut, a bowl-shaped flange and a spherical gasket which are sequentially sleeved on the adjusting screw rod from top to bottom, the adjusting nut is threadedly connected with the adjusting screw rod, the bowl-shaped flange is provided with a through hole in the center for the adjusting screw rod to pass through, the spherical gasket is provided with a swing hole in the center for the adjusting screw rod to pass through, the spherical gasket is fixedly installed on the outside of the crushing chamber, the spherical gasket is provided with an outer convex spherical surface at the upper end, the bowl-shaped flange is provided with an inner concave spherical surface at the lower end which is matched with and swing-connected with the outer convex spherical surface, and the upper end surface of the bowl-shaped flange is a flat surface.

4. A crushing gap adjustment device for an impact crusher according to claim 3, characterized in that: The spherical gasket is fixedly arranged on a fixed plate, the fixed plate is fixedly installed on the outside of the crushing chamber, the fixed plate is provided with a first through hole for the piston rod of the adjusting hydraulic cylinder to pass through and a second through hole for the adjusting screw rod to pass through.

5. A crushing gap adjustment device for an impact crusher according to claim 4, characterized in that: A sealing gasket is arranged between the fixed plate and the crushing chamber.

6. A crushing gap adjustment device for an impact crusher according to claim 3, characterized in that: The adjusting nut comprises a sleeve and a nut, the sleeve is provided with a cavity which is open at one end, the nut is fixedly arranged at the opening of the sleeve, the sleeve is sleeved on the other end of the adjusting screw rod and the nut is threadedly connected with the adjusting screw rod.

7. A crushing gap adjustment device for an impact crusher according to claim 3, characterized in that: The inner diameter of the through hole and the inner diameter of the swing hole are both more than 1.4 times of the outer diameter of the adjusting screw rod.

8. A crushing gap adjustment device for an impact crusher according to claim 1, characterized in that: A first hinge shaft is fixedly arranged on the outer surface of the cylinder body of the adjusting hydraulic cylinder, the first hinge shaft is rotatably installed in a fixed seat, and the fixed seat is fixedly installed on the outside of the crushing chamber.

9. A crushing gap adjustment device for an impact crusher according to claim 1, characterized in that: One end of the adjusting screw rod is fixedly provided with a hinge seat, the hinge seat is provided with a first hinge hole, the cylinder fork is provided with a second hinge hole, and a second hinge shaft is installed in the first hinge hole and the second hinge hole.

10. A crushing gap adjustment device for an impact crusher according to claim 1, characterized in that: The cylinder fork is provided with a third hinge hole, the counterattack plate is provided with a fourth hinge hole, and a third hinge shaft is installed in the third hinge hole and the fourth hinge hole.

Images