Double-roller equipment for gravel aggregate production

Abstract

A pair roller device for gravel aggregate production comprises an adjusting device, the adjusting device comprises a connecting rod, a push-pull piece and a pushing device, a first hinged support is fixedly connected to the side, away from the other pressing roller, of a framework, the upper end of the connecting rod is hinged to the first hinged support through a first pin shaft, and the lower end of the connecting rod penetrates through an avoiding hole in the framework and then extends downwards; the end portion of the lower end of the connecting rod is hinged to one end of the pushing device through a second pin shaft, the other end of the pushing device is hinged to a second hinged support fixedly connected to the framework through a third pin shaft, a push-pull shaft is installed on the connecting rod, and the center distance between the push-pull shaft and the first pin shaft is smaller than the center distance between the push-pull shaft and the second pin shaft. And the push-pull piece is used for pushing the bearing seat. Due to the fact that the center distance between the push-pull shaft and the first pin shaft is smaller than the center distance between the push-pull shaft and the second pin shaft, a labor-saving lever is formed relative to the pushing device, stress of the pushing device is reduced, and the service life of the pushing device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of machine-made sand production equipment, in particular to a pair of roller equipment used for sandstone aggregate production. Background Art

[0002] When producing sand and gravel aggregates, it is necessary to break the stone particles with large particle sizes, which involves a double-roller machine. The double-roller machine uses two oppositely arranged rollers to squeeze the stone particles, thereby squeezing and crushing the stone particles. During production, according to the requirements of the contract, it is necessary to produce sand and gravel aggregates of different particle sizes. Therefore, it is necessary to adjust the spacing between the two rollers of the double-roller machine. At present, our company uses a gap automatic adjustment double-roller machine similar to that disclosed in CN215234459U. This double-roller machine adjusts the rollers through two adjusting cylinders. Its advantages are: it can automatically adjust the spacing between the two rollers; its disadvantages are: it is also necessary to equip a hydraulic station to supply pressure to the adjusting cylinder, and the vibration of the equipment during production will cause the sealing ring inside the adjusting cylinder to have a short service life, and it is easy to have hydraulic oil leakage and other faults.

[0003] In addition, CN109201179A also discloses a sand making machine transmission roller assembly, which discloses the use of a threaded rod to adjust the distance between the two pressure rollers. Its advantages are: simple structure, easy adjustment, no need to use a hydraulic station and an adjusting cylinder, and reduced failures; but its disadvantages are: the threaded rod is directly connected to the threaded barrels at the ends of the two pressure rollers. Since the two pressure rollers have a large outward thrust when producing extruded stones, the threads on the threaded rod and the threaded barrel will be damaged, and the service life of the threaded rod and the threaded barrel is short. Utility Model Content

[0004] The utility model aims to provide a pair of rollers for sand and gravel aggregate production, which can prolong the service life of the pushing device by reducing the force applied to the pushing device.

[0005] To achieve the above-mentioned purpose, the utility model provides a pair of roller equipment for the production of sand and gravel aggregates, including a pair of roller machine body, the pressure rollers inside the pair of roller machine body are slidably installed with a frame through a bearing seat, and an adjusting device for adjusting the spacing between the two pressure rollers is also installed on the pair of roller machine body. The adjusting device includes a connecting rod and a push-pull member pushing device. A first hinge seat is fixedly connected to the frame on the side away from the other pressure roller, the upper end of the connecting rod is hinged to the first hinge seat through a first pin shaft, the lower end of the connecting rod extends downward after passing through an avoidance hole on the frame, the end of the lower end of the connecting rod is hinged to one end of the pushing device through a second pin shaft, and the other end of the pushing device is hinged to a second hinge seat fixed to the frame through a third pin shaft. The connecting rod is installed with a push-pull shaft, and the center distance between the push-pull shaft and the first pin shaft is smaller than the center distance between the push-pull shaft and the second pin shaft. A longitudinal long hole is provided on the push-pull member, the push-pull member is installed on the connecting rod, the push-pull shaft passes through the long hole, and the push-pull member is used to push the bearing seat.

[0006] The push-pull member is a U-shaped seat structure, two side walls of the U-shaped seat are provided with long holes, the U-shaped seat is clamped on the connecting rod, and the bottom of the U-shaped seat is fixedly connected to the bearing seat.

[0007] The push-pull member includes a hinged plate, a connecting plate and an elastic member. Two hinged plates are installed on one side of the connecting plate, and an elastic member is fixedly installed on the other side of the connecting plate. Long holes are provided on the two hinged plates. The push-pull member is clamped on the connecting rod through the two hinged plates, and the elastic member is against the bearing seat.

[0008] The elastic member is a rubber block or a spring.

[0009] The pushing device includes a first nut sleeve, a second nut sleeve and a forward and reverse threaded screw. The first nut sleeve and the second nut sleeve are respectively provided with notches at ends away from each other. The notch of the first nut sleeve is clamped on the second hinge seat and is hinged to the second hinge seat through a third pin shaft. The notch of the second nut sleeve is clamped on the connecting rod and is hinged to the connecting rod through the second pin shaft. The ends of the first nut sleeve and the second nut sleeve that are close to each other are respectively provided with internal threaded holes that are screwed with threads at both ends of the forward and reverse threaded screws, and a screwing portion is provided in the middle of the forward and reverse threaded screws.

[0010] The pushing device is an electric cylinder.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] The utility model pushes and pulls the connecting rod through the pushing device, and the center distance between the push-pull shaft on the connecting rod and the first pin shaft is smaller than the center distance between the push-pull shaft and the second pin shaft, so a labor-saving lever is formed relative to the pushing device, thereby reducing the force on the pushing device, thereby extending the service life of the pushing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0016] Figure 3 for Figure 1 Schematic diagram of the BB section structure.

[0017] Figure 4 It is a structural schematic diagram of the second embodiment of the utility model.

[0018] Figure 5 It is a schematic structural diagram of a push-pull member in the second embodiment of the utility model.

[0019] In the figure:

[0020] Roller machine body 10, frame 11, bearing seat 12, second hinge seat 13, avoidance hole 14;

[0021] A first hinge seat 20, a connecting rod 30, a first pin shaft 31, a second pin shaft 32, and a push-pull shaft 33;

[0022] Push-pull member 40, long hole 41, hinge plate 42, connecting plate 43, elastic member 44;

[0023] The pushing device 50 , the first nut sleeve 51 , the second nut sleeve 52 , the positive and negative thread screw 53 , the notch 54 , the third pin shaft 55 , the internal thread hole 56 , and the screwing part 57 . DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] Embodiment 1:

[0026] See also Figure 1 , 23. A roller device for producing sand and gravel aggregates, comprising a roller machine body 10, wherein the rollers inside the roller machine body 10 are slidably mounted on a frame 11 through a bearing seat 12, and an adjusting device for adjusting the distance between the two rollers is also installed on the roller machine body 10, wherein the adjusting device comprises a connecting rod 30, a push-pull member 40 and a pushing device 50, and a first hinge seat 20 is fixedly connected to the frame 11 on a side away from the other roller, and the upper end of the connecting rod 30 is hinged to the first hinge seat 20 through a first pin shaft 31, and the lower end of the connecting rod 30 passes through a avoidance hole 14 on the frame 11 The connecting rod 30 extends downward, and the end of the lower end of the connecting rod 30 is hinged to one end of the pushing device 50 through the second pin shaft 32, and the other end of the pushing device 50 is hinged to the second hinge seat 13 fixed to the frame 11 through the third pin shaft 55. The connecting rod 30 is equipped with a push-pull shaft 33, and the center distance between the push-pull shaft 33 and the first pin shaft 31 is smaller than the center distance between the push-pull shaft 33 and the second pin shaft 32. The push-pull member 40 is provided with a longitudinal long hole 41, and the push-pull member 40 is installed on the connecting rod 30. The push-pull shaft 33 passes through the long hole 41, and the push-pull member 40 is used to push the bearing seat 12. Since the center distance between the push-pull shaft 33 and the first pin shaft 31 is smaller than the center distance between the push-pull shaft 33 and the second pin shaft 32, a labor-saving lever is formed relative to the pushing device 50, which reduces the force on the pushing device, thereby extending the service life of the pushing device.

[0027] In this embodiment, the center distance between the push-pull shaft 33 and the first pin shaft 31 is about 100 mm, and the center distance between the push-pull shaft 33 and the second pin shaft 32 is about 300 mm, so that the force on the pushing device 50 will be greatly reduced compared with the original.

[0028] The upper layer of the skeleton 11 of the existing roller machine body 10 is a frame structure, and the bearing seat 12 is square. The upper and lower sides of the bearing seat 12 at both ends of one of the rollers are respectively provided with grooves. The bearing seat 12 slides in the frame structure of the upper layer of the skeleton 11 through the grooves on the upper and lower sides. The lower layer of the skeleton 11 is a channel steel. In order to facilitate the connecting rod 30 to extend downward and lengthen the force arm, an avoidance hole 14 is provided at the connection between the upper frame structure and the channel steel. In this embodiment, adjustment devices are installed on both sides of the roller machine body 10.

[0029] In this embodiment, the push-pull member 40 is a U-shaped seat structure, and the two side walls of the U-shaped seat are provided with long holes 41, the U-shaped seat is clamped on the connecting rod 30, and the bottom of the U-shaped seat is fixedly connected to the bearing seat 12, which has a simple structure. The push-pull member 40 can be welded to the bearing seat 12, or can be bolted to the bearing seat 12.

[0030] In this embodiment, see Figure 3The push device 50 includes a first nut sleeve 51, a second nut sleeve 52 and a positive and negative threaded screw 53. The ends of the first nut sleeve 51 and the second nut sleeve 52 that are away from each other are respectively provided with notches 54. The notches 54 of the first nut sleeve 51 are clamped on the second hinge seat 13 and are hinged to the second hinge seat 13 through the third pin 55. The notches 54 of the second nut sleeve 52 are clamped on the connecting rod 30 and are hinged to the connecting rod 30 through the second pin 32. The ends of the first nut sleeve 51 and the second nut sleeve 52 that are close to each other are respectively provided with internal threaded holes 56 that are threadedly matched with the two ends of the positive and negative threaded screw 53. The middle part of the positive and negative threaded screw 53 is provided with a screwing portion 57. The length of the push device 50 can be adjusted by turning the wrench to rotate the screwing portion 57, thereby adjusting the spacing of the pressure rollers. Of course, in order to prevent the forward and reverse threaded screw 53 from rotating during production, a nut may be screwed and installed at both ends of the forward and reverse threaded screw 53 , respectively, and the two nuts abut against the first nut sleeve 51 and the second nut sleeve 52 , respectively.

[0031] Embodiment 2:

[0032] The difference from the first embodiment is that: Figure 4 , 5 The push-pull member 40 includes a hinge plate 42, a connecting plate 43 and an elastic member 44. Two hinge plates 42 are installed on one side of the connecting plate 43, and the elastic member 44 is fixedly installed on the other side of the connecting plate 43. Long holes 41 are provided on the two hinge plates 42. The push-pull member 40 is clamped on the connecting rod 30 through the two hinge plates 42, and the elastic member 44 abuts against the bearing seat 12. The elastic member 44 is provided to further reduce the impact of vibration on the push device 50.

[0033] In a preferred solution, the elastic member 44 is a rubber block or a spring.

[0034] When the elastic member 44 is a rubber block, the rubber block can be bonded to the bearing seat 12 to form a whole, or it can be connected to the bearing seat 12 after passing through the connecting plate 43 and the elastic member 44 by bolts, and the bolts are slidingly matched with the connecting plate 43 and the elastic member 44.

[0035] When the elastic member 44 is a spring, positioning posts can be respectively arranged on the opposite side of the bearing seat 12 and the connecting plate 43, and the two ends of the spring are respectively tightly fitted into the positioning posts on both sides for fixing. In this embodiment, the spring is a compression spring for a crusher.

[0036] In this embodiment, the pushing device 50 is an electric cylinder. By electrically adjusting the length of the pushing device 50, it is more convenient to use.

[0037] The working principle or action process of the utility model is as follows:

[0038] When using, see Figure 1 , 23. When the pushing device 50 is extended, the lower end of the connecting rod 30 will swing to the right, and the push-pull shaft 33 will push the push-pull member 40 to the right, thereby moving the bearing seat 12 to the right, thereby reducing the distance between the pressure rollers; when the pushing device 50 is shortened, the lower end of the connecting rod 30 will swing to the left, and the push-pull shaft 33 will pull the push-pull member 40 to the left, thereby moving the bearing seat 12 to the left, thereby increasing the distance between the pressure rollers.

Claims

1. A roller machine for producing sand and gravel aggregates, comprising a roller machine body (10), wherein a pressure roller inside the roller machine body (10) is slidably mounted on a frame (11) via a bearing seat (12), and an adjusting device for adjusting the distance between two pressure rollers is also installed on the roller machine body (10), characterized in that: The adjusting device comprises a connecting rod (30), a push-pull member (40) and a pushing device (50); a first hinge seat (20) is fixedly connected to the frame (11) on a side away from the other pressure roller; the upper end of the connecting rod (30) is hinged to the first hinge seat (20) via a first pin shaft (31); the lower end of the connecting rod (30) passes through a avoidance hole (14) on the frame (11) and extends downward; the end of the lower end of the connecting rod (30) is hinged to one end of the pushing device (50) via a second pin shaft (32); the other end of the pushing device (50) is hinged to the first hinge seat (20) via a first pin shaft (31); The connecting rod (30) is hinged to a second hinge seat (13) fixed to the frame (11) via a third pin shaft (55); a push-pull shaft (33) is installed on the connecting rod (30); the center distance between the push-pull shaft (33) and the first pin shaft (31) is smaller than the center distance between the push-pull shaft (33) and the second pin shaft (32); a longitudinal long hole (41) is provided on the push-pull member (40); the push-pull member (40) is installed on the connecting rod (30); the push-pull shaft (33) passes through the long hole (41); and the push-pull member (40) is used to push the bearing seat (12).

2. The roller device for sand and gravel aggregate production according to claim 1 is characterized in that: The push-pull member (40) is a U-shaped seat structure. Long holes (41) are provided on two side walls of the U-shaped seat. The U-shaped seat is clamped on the connecting rod (30). The bottom of the U-shaped seat is fixedly connected to the bearing seat (12).

3. The roller device for sand and gravel aggregate production according to claim 1 is characterized in that: The push-pull member (40) comprises a hinged plate (42), a connecting plate (43) and an elastic member (44); two hinged plates (42) are installed on one side of the connecting plate (43); an elastic member (44) is fixedly installed on the other side of the connecting plate (43); long holes (41) are provided on the two hinged plates (42); the push-pull member (40) is clamped on the connecting rod (30) through the two hinged plates (42); and the elastic member (44) abuts against the bearing seat (12).

4. The roller device for sand and gravel aggregate production according to claim 3 is characterized in that: The elastic member (44) is a rubber block or a spring.

5. The roller device for sand and gravel aggregate production according to claim 1 is characterized in that: The pushing device (50) comprises a first nut sleeve (51), a second nut sleeve (52) and a positive and negative threaded screw (53); the ends of the first nut sleeve (51) and the second nut sleeve (52) which are away from each other are respectively provided with notches (54); the notches (54) of the first nut sleeve (51) are clamped on the second hinge seat (13) and are hinged to the second hinge seat (13) through a third pin shaft (55); the notches (54) of the second nut sleeve (52) are clamped on the connecting rod (30) and are hinged to the connecting rod (30) through a second pin shaft (32); the ends of the first nut sleeve (51) and the second nut sleeve (52) which are close to each other are respectively provided with internal threaded holes (56) which are threadedly engaged with the two ends of the positive and negative threaded screw (53); and a screwing portion (57) is provided in the middle of the positive and negative threaded screw (53).

6. The roller device for sand and gravel aggregate production according to claim 1 is characterized in that: The pushing device (50) is an electric cylinder.

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