CN216094723U - Screen assembly and vibrating screen - Google Patents

Abstract

The utility model relates to the technical field of vibrating screens, in particular to a screen assembly and a vibrating screen. The screen assembly comprises a screen, a cross beam and a pin shaft; the screen comprises a screen body and first shaft sleeves, wherein at least one first shaft sleeve is connected to two ends of the screen body in the width direction; the crossbeam comprises a crossbeam body and at least one second shaft sleeve connected to the crossbeam body; the pin shaft penetrates through the first shaft sleeve and the second shaft sleeve to realize that the screen is connected with each cross beam respectively. According to the utility model, the first shaft sleeve is arranged on the screen, the second shaft sleeve is arranged on the cross beam, when the screen is installed, the connection between the screen and the cross beam can be realized by inserting the pin shaft into the first shaft sleeve and the second shaft sleeve, and when the screen is disassembled, the pin shaft only needs to be pulled out from the first shaft sleeve and the second shaft sleeve, so that the screen disassembling and assembling process is simplified, unnecessary troubles are avoided, and the working hours can be saved.

Description

Screen assembly and vibrating screen

Technical Field

The utility model relates to the technical field of vibrating screens, in particular to a screen assembly and a vibrating screen.

Background

Among the prior art, the screen cloth of shale shaker compresses tightly on the crossbeam through the clamp plate usually, then connects clamp plate and crossbeam through the bolt, realizes the fixed mounting to the screen cloth, however, because the bolt is more, lead to the screen cloth to be relatively troublesome in the dismouting of later stage, extravagant man-hour.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem that the screen is relatively troublesome to disassemble and assemble at the later stage because the screen is fixedly installed through bolts.

To solve the above problems, the present invention provides

A screen assembly comprises a screen, a cross beam and a pin shaft; the screen comprises a screen body and first shaft sleeves, wherein at least one first shaft sleeve is connected to two ends of the screen body in the width direction; the crossbeam comprises a crossbeam body and at least one second shaft sleeve connected to the crossbeam body; the pin shaft penetrates through the first shaft sleeve and the second shaft sleeve to realize that the screen is connected with each cross beam respectively.

Optionally, the first shaft sleeve and/or the second shaft sleeve are provided with material leaking holes, and openings of the material leaking holes are arranged downwards.

Optionally, the screen assembly further comprises two end plates which are respectively arranged at two ends of the screen body in the width direction, each beam comprises a first beam and a second beam, the first beam and the second beam are respectively arranged at two ends of the screen body in the length direction, two opposite ends of the beam body are respectively detachably connected with one of the end plates, and two ends of the screen body in the width direction are respectively suitable for being connected with or abutted against the end plates.

Optionally, the mounting hole has been seted up on the end plate, the round pin axle includes round pin axle body and limiting plate, the limiting plate connect perpendicularly in round pin axle body one end, the limiting plate be suitable for with the end plate is kept away from the laminating of one side of crossbeam, round pin axle body passes the mounting hole first axle sleeve with the second axle sleeve, the limiting plate be suitable for with the end plate can be dismantled and be connected.

Optionally, the screen assembly further comprises a threaded connector, the limiting plate is provided with a through hole, the end plate is provided with a threaded hole, and the threaded connector is suitable for penetrating through the through hole and then is in threaded connection with the end plate.

Optionally, the round pin axle body includes first linkage segment and the second linkage segment of coaxial setting, the relative both sides face of limiting plate respectively with first linkage segment and second linkage segment are connected, first linkage segment passes the mounting hole first axle sleeve with the second axle sleeve, the second linkage segment stretch out in the end plate.

Optionally, a detaching and connecting structure is arranged on the second connecting section, the detaching and connecting structure surrounds the second connecting section in the circumferential direction, and the detaching and connecting structure is an annular clamping groove or a threaded structure.

Optionally, the pin shaft further comprises a limiting protrusion, the limiting protrusion is connected with the edge of the limiting plate, and the limiting protrusion extends from the limiting plate to one side far away from the pin shaft body.

Optionally, the two ends of the screen body in the length direction are respectively connected with a plurality of first shaft sleeves, the cross beam is connected with a plurality of second shaft sleeves, and the first shaft sleeves and the second shaft sleeves are arranged in a staggered mode. Compared with the prior art, the screen assembly has the beneficial effects that:

according to the utility model, the first shaft sleeve is arranged on the screen, the second shaft sleeve is arranged on the cross beam, when the screen is installed, the connection between the screen and the cross beam can be realized by inserting the pin shaft into the first shaft sleeve and the second shaft sleeve, and when the screen is disassembled, the pin shaft only needs to be pulled out from the first shaft sleeve and the second shaft sleeve, so that the screen disassembling and assembling process is simplified, unnecessary troubles are avoided, and the working hours can be saved. The material leaking holes are formed in the side walls of the first shaft sleeve and/or the second shaft sleeve, and the pin shaft is rotated before pin pulling is carried out, so that sand particles in the first shaft sleeve or the second shaft sleeve can leak out of the material leaking holes, and the pin shaft is prevented from being locked by the sand particles when being pulled out.

The utility model also provides a vibrating screen which comprises the screen assembly. The beneficial effects of the vibrating screen and the screen assembly are the same, and are not described again here.

Drawings

FIG. 1 is an isometric view of a shaker screen in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;

FIG. 3 is an enlarged view of a portion of the present invention at B of FIG. 2;

FIG. 4 is an enlarged view of a portion of the present invention at C of FIG. 2;

FIG. 5 is an enlarged view of a portion of the present invention at D of FIG. 2;

FIG. 6 is a top view of a shaker screen in an embodiment of the present invention;

FIG. 7 is an enlarged fragmentary view at E of FIG. 6 in accordance with the present invention;

FIG. 8 is a side view of a shaker screen in an embodiment of the present invention;

FIG. 9 is an enlarged fragmentary view at F of FIG. 8 of the present invention;

fig. 10 is a schematic view of the pin shaft and the pin pulling device according to the embodiment of the present invention.

Description of reference numerals:

11-screen mesh, 12-end plate, 13-beam, 14-pin shaft, 15-reinforcing column, 16-threaded connecting piece, 21-connecting rod, 22-sleeve, 23-pin shaft screwing head, 24-pin pulling head, 25-stopping structure, 26-connecting section, 111-screen mesh body, 112-first shaft sleeve, 131-beam body, 132-second shaft sleeve, 133-material leakage hole, 141-pin shaft body, 142-limiting plate, 143-limiting bulge, 144-annular clamping groove, 145-second connecting section, 146-through hole, 231-positioning support, 232-screwing stress part, 233-second clamping opening, 241-clamping piece and 242-first clamping opening.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the terms "an embodiment," "one embodiment," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment or example implementation of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

Also, in the drawings, the Z-axis represents a vertical direction, that is, an up-down direction, and a positive direction of the Z-axis (that is, an arrow direction of the Z-axis) represents an up direction, and a negative direction of the Z-axis (that is, a direction opposite to the positive direction of the Z-axis) represents a down direction; in the drawings, the X-axis indicates the front-rear direction, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) indicates the rear, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) indicates the front; in the drawings, the Y-axis represents the left-right direction, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) represents the right, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) represents the left; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Embodiments of the present invention provide a screen assembly, as shown in fig. 1 to 5, comprising a screen 11, a cross beam 13 and a pin 14; the screen 11 comprises a screen body 111 and a first shaft sleeve 112, wherein at least one first shaft sleeve 112 is connected to two ends of the screen body 111 in the width direction; the beam 13 comprises a beam body 131 and at least one second bushing 132 connected to the beam body 131; the pin 14 is inserted through the first shaft sleeve 112 and the second shaft sleeve 132 to connect the screen 11 with each of the cross beams 13.

Here, the shape of the screen body 111 is not limited, for example, the screen body 111 may be rectangular, and in one embodiment, two opposite ends of the screen body 111 are respectively provided with one cross beam 13, when the screen is installed, the first shaft sleeve 112 of the first end of the screen 11 is aligned with the second shaft sleeve 132 of one of the cross beams 13, and one of the pin shafts 14 is inserted into the first shaft sleeve 112 and the second shaft sleeve 132 of the first end of the screen 11; the first sleeve 112 at the second end of the screen 11 is then aligned with the second sleeve 132 of the other beam 13 and the other pin 14 is inserted into the first sleeve 112 and the second sleeve 132 at the second end of the screen 11 to effect the connection of the screen 11 to the beam 13. Here, the first end and the second end of the mesh 11 are both ends in the longitudinal direction of the mesh 11, and the longitudinal direction of the mesh 11 is the Y-axis direction in fig. 1. In one embodiment, two beams 13 are respectively disposed at two ends of the screen body 111 in the length direction and two ends of the screen body in the width direction, and the installation manner of the screen 11 will not be described in detail.

In this embodiment, the screen body 111 refers to a mesh structure for screening, the beam body 131 refers to a strip structure for fixing the screen 11, the beam body 131 may be a section or a pipe, and the first bushing 112 and the second bushing 132 are structures provided with pin holes for the pin 14 to pass through. The screen body 111 can be detachably connected with the outer wall of the first shaft sleeve 112, specifically, a clamping hole can be formed in the first shaft sleeve 112, and a clamping piece is mounted on the screen body 111 and clamped with the clamping hole through the clamping piece; or, a threaded hole may be formed in the outer wall of the first shaft sleeve 112, and the screen body 111 and the first shaft sleeve 112 may be connected by the cooperation of a bolt and the threaded hole. The second boss 132 and the cross member body 131 may be fastened by bolts or welded. The axial direction of the second bushing 132 is the same as the length direction of the beam body 131, i.e., the X-axis direction in fig. 1; the axial direction of the first sleeve 112 is the same as the width direction of the screen body 111, i.e., the X-axis direction in fig. 1; the width direction of the mesh body 111 is the same as the length direction of the beam body 131, i.e., the X-axis direction in fig. 1. It should be noted that the first sleeve 112 and the second sleeve 132 may be annular structures, and a mounting structure, such as a slot or a mounting platform, may be disposed on an outer wall of the first sleeve 112 and the second sleeve 132.

Therefore, the first shaft sleeve 112 is arranged on the screen cloth 11, the second shaft sleeve 132 is arranged on the cross beam 13, when the screen cloth 11 is installed, the first shaft sleeve 112 and the second shaft sleeve 132 are inserted through the pin shaft 14, the screen cloth 11 and the cross beam 13 can be connected, when the screen cloth 11 is disassembled, the pin shaft 14 only needs to be drawn out from the first shaft sleeve 112 and the second shaft sleeve 132, the disassembling and assembling processes of the screen cloth 11 are simplified, unnecessary troubles are avoided, and labor and time can be saved.

In general, when the screen cloth 11 is used for screening, fine sand particles easily enter a gap between the first sleeve 112 and/or the second sleeve 132 and the pin 14, so that the pin 14 is locked when being pulled out. As shown in fig. 2, the first sleeve 112 and/or the second sleeve 132 are provided with a material leaking hole 133, and the material leaking hole 133 is disposed with an opening facing downward. The discharge holes 133 may be circular, rectangular or oval, and one or more discharge holes 133 may be provided. Here, a material leaking hole 133 may be formed in a part of the first shaft sleeve 112 or the second shaft sleeve 132, or material leaking holes 133 may be formed in all of the first shaft sleeve 112 and the second shaft sleeve 132, and the number of the material leaking holes 133 in each of the first shaft sleeve 112 or the second shaft sleeve 132 is not limited. Preferably, the first shaft sleeve 112 and the second shaft sleeve 132 are horizontally arranged, and the material leaking holes 133 are arranged downward, which means that the material leaking holes 133 are opened on the side walls of the first shaft sleeve 112 and the second shaft sleeve 132 facing the ground, or when the screen mesh 11 is installed on the cross beam 13, the material leaking holes 133 are downward; this prevents sand particles from entering the first sleeve 112 or the second sleeve 132 through the weep hole 133. Before the pin is pulled out, the pin 14 is rotated, so that the sand in the first sleeve 112 or the second sleeve 132 can leak out from the material leakage hole 133, and the pin 14 is prevented from being stuck by the sand when being pulled out.

As shown in fig. 1, the screen assembly further includes two end plates 12 respectively disposed at two ends of the screen body 111 in the width direction, the cross beam 13 includes a first cross beam and a second cross beam, the first cross beam and the second cross beam are respectively disposed at two ends of the screen body 111 in the length direction, two opposite ends of the cross beam body 131 are respectively detachably connected to one of the end plates 12, and two ends of the screen body 111 in the width direction are respectively adapted to be connected to or abutted against the end plates. Two end plates 12 are parallel to each other, and the length direction both ends of crossbeam body 131 can be dismantled with one of them end plate 12 respectively and be connected, specifically can be for bolt fastening connects or welding, realizes the fixed to crossbeam body 131 through end plate 12, and screen cloth body 111 can be connected with end plate 12 through external connecting piece, also can only laminate with end plate 12.

In this embodiment, as shown in fig. 2 and 4, the end plate 12 has a mounting hole, the pin 14 includes a pin body 141 and a limiting plate 142, the limiting plate 142 is vertically connected to one end of the pin body 141, the limiting plate 142 is adapted to be attached to one side of the end plate 12 away from the cross beam 13, the pin body 141 passes through the mounting hole, the first sleeve 112 and the second sleeve 132, and the limiting plate 142 is adapted to be detachably connected to the end plate 12. The limiting plate 142 can be oval, circular or rectangle etc., and the limiting plate 142 is located the end plate 12 and keeps away from crossbeam 13 one side, and mounting hole, first axle sleeve 112 and the coaxial setting of second axle sleeve 132, limiting plate 142 can with end plate 12 joint or bolt-up connection, limiting plate 142 also can with round pin axle body 141 swing joint, through the adjustment the position of limiting plate 142 is realized the overlap joint of limiting plate 142 and end plate 12. Through the connection of the pin 14 and the end plate 12, the pin 14 is positioned, so that the pin 14 can be prevented from rotating, and the connection stability of the screen 11 is further improved.

Preferably, as shown in fig. 4, the screen assembly further includes a threaded connector 16, a through hole 146 is formed on the limiting plate 142, a threaded hole is formed on the end plate 12, and the threaded connector 16 is adapted to pass through the through hole 146 and then be threadedly connected with the end plate 12. The threaded connection member 16 may be a bolt, that is, the limiting plate 142 is connected to the end plate 12 by a bolt fastening method, and of course, the threaded connection member 16 may also be other non-standard connection members with an external thread structure, and the connection between the pin 14 and the end plate 12 is achieved through the threaded connection member 16, which is convenient for installation and removal.

As shown in fig. 4 and 10, the pin body 141 includes a first connecting section and a second connecting section 145 which are coaxially disposed, two opposite side surfaces of the limiting plate 142 are respectively connected with the first connecting section and the second connecting section 145, the first connecting section passes through the mounting hole, the first sleeve 112 and the second sleeve 132, the second connecting section extends out of the end plate 12, a detachable connecting structure is disposed on the second connecting section 145, the detachable connecting structure surrounds the circumferential direction of the second connecting section 145, and the detachable connecting structure is an annular clamping groove or a threaded structure. Here, the first connection section, the limiting plate 142 and the second connection section 145 may be integrally connected, the first connection section and the second connection section 145 are respectively of a cylindrical structure, which is equivalent to the first connection section for connecting the screen 11 and the cross beam 13, and the second connection section 145 is used for cooperating with the pin pulling device, so as to facilitate the pulling out of the pin 14. In one embodiment, the second connecting section 145 is provided with a ring-shaped slot 144, and the pin pulling device is provided with a clamping structure matched with the ring-shaped slot 144; in one embodiment, an external thread structure is provided on the second connecting section 145, and an internal thread structure matching the external thread structure is provided on the pin pulling device.

As shown in fig. 4, 8 and 9, the pin 14 further includes a limiting protrusion 143, the limiting protrusion 143 is connected to an edge of the limiting plate 142, and the limiting protrusion 143 extends from the limiting plate 142 to a side away from the pin body 141. Here, when the pin 14 is pulled out, the pin 14 is rotated first, in order to facilitate the application of the circumferential acting force, the limiting protrusion 143 is disposed on the limiting plate 142, the screwing force receiving portion 232 matched with the limiting protrusion 143 is disposed on the pin pulling device, and the application of the circumferential acting force on the pin 14 is realized through the circumferential limiting matching of the screwing force receiving portion 232 and the limiting protrusion 143. Preferably, the protruding direction of the limiting protrusion 143 is arranged along the radial direction of the pin 14.

As shown in fig. 1, 6 and 7, a plurality of first bushings 112 are respectively connected to both ends of the screen body 111 in the longitudinal direction, a plurality of second bushings 132 are connected to the cross beam 13, and the first bushings 112 and the second bushings 132 are arranged in a staggered manner. That is to say, one second shaft sleeve 132 is arranged between two adjacent first shaft sleeves 112, or one first shaft sleeve 112 is arranged between two adjacent second shaft sleeves 132, and all the first shaft sleeves 112 and the second shaft sleeves 132 are coaxially arranged, so that the pin shaft body 141 can simultaneously penetrate through a plurality of second shaft sleeves 132 and the first shaft sleeves 112, so that the stress distribution at the connecting position of the screen mesh 11 and the cross beam 13 is more uniform, and the connecting stability is increased.

In this embodiment, there are four pins 14, and one pin 14 is connected to one end of each cross beam 13. That is, the pins 14 may include a first pin and a second pin, the end plate 12 includes a first end plate and a second end plate, the first end plate and the second end plate are respectively located at two ends of the width direction of the screen 11, the first pin passes through the mounting hole on the screen 11 from the first end of the cross beam 13, the first sleeve 112 at the first end of the screen 11 and the second sleeve 132 at the first end of the cross beam 13; passing a second pin through the mounting hole in the screen 11, the first bushing 112 at the second end of the screen 1 and the second bushing 132 at the second end of the beam 13 from the second end of the beam 13; the limiting plate 142 on the first pin is located on the side, away from the cross beam 13, of the first end plate, and the limiting plate 142 on the second pin is located on the side, away from the cross beam 13, of the second end plate, so that the pin can be conveniently pulled out, and interference of the limiting plate 142 on pulling out of the pin 14 is avoided. Here, the first end and the second end of the mesh 11 are both ends in the width direction of the mesh 11.

In this embodiment, as shown in fig. 1, the screen assembly further includes a plurality of reinforcement columns 15, both ends of the reinforcement column 115 are respectively connected with two end plates 12, specifically, both ends of the reinforcement column 115 can be respectively connected with two end plates 12 by welding or bolt fastening, the screen body 111 is of an arc structure, thereby the area of material screening can be increased, all reinforcement columns 115 are arranged at intervals along the extending direction of the arc structure, thereby the stability of stress can be increased, the reinforcement column 15 is suitable for supporting the screen body 111, thereby the stress strength of the screen body 111 is enhanced, and the screen 11 body 111 is prevented from being collapsed.

Another embodiment of the present invention provides a shaker including the screen assembly described above. The screen assemblies can be one, two or more, different screen assemblies can be stacked or arranged side by side, and the beneficial effects of the vibrating screen and the screen assemblies are the same, which is not described herein again.

The utility model provides a pin pulling device, which comprises a connecting rod 21, a pin pulling head 24 and a pin shaft screwing head 23 as shown in figures 1 to 5; the pin pulling head 24 and the pin shaft screwing head 23 are respectively connected with the connecting rod 21, and the pin pulling head 24 is suitable for being detachably connected with the pin shaft 14 to form fit in the axial direction of the pin shaft 14; the pin head 23 is adapted to be detachably connected to the pin 14 to form a fit in the circumferential direction of the pin 14.

In this embodiment, the pin pulling head 24 is connected to one end of the connecting rod 21, and the pin rotating head 23 is connected to the other end of the connecting rod 21, so that the pin rotating head 23 and the pin pulling head 24 are prevented from interfering during operation, and the pin rotating head 23 and the pin pulling head 24 are also convenient to be stressed respectively.

Because there is certain clearance between round pin axle and first axle sleeve or the second axle sleeve, lead to sand grain to get into usually easily, perhaps the round pin axle itself takes place the corrosion, current pin pulling device is relative difficult when pulling out the round pin, if hard too violently when pulling out the round pin, can lead to the round pin axle to take place the fracture even. Here, the pin screwing head 23 is adapted to be detachably connected with the pin 14, for example, clamped or screwed, and the pin screwing head 23 is adapted to be detachably connected with the pin 14 to form a fit in the circumferential direction of the pin 14, which means that the pin screwing head 23 and the pin 14 can form a force in the circumferential direction of the pin 14 after being detachably connected. When pin pulling is performed, the pin rotating head 23 is connected with the pin 14, then the connecting rod 21 is held and force is exerted along the circumferential direction of the pin 14, so that the pin rotating head 23 drives the pin 14 to rotate, the pin 14 is loosened, finally, the connection between the pin rotating head 23 and the pin 14 is released, the pin pulling head 24 is detachably connected with the pin 14, and the pin 14 is pulled out through the pin pulling head 24.

From this, through set up round pin axle twist head 23 on connecting rod 21, before pulling out the round pin, form the force fit in round pin axle 14 circumference after twisting head 23 and round pin axle 14 soon can be dismantled and be connected with the round pin axle, twist round pin axle 14 soon through round pin axle twist head 23 can be realized twisting round pin axle 14 for take place to become flexible between round pin axle 14 and the axle sleeve, then pull out round pin axle 14 through pulling out round pin head 24, avoid round pin axle 14 and axle sleeve card to die, also can avoid pulling out the fracture that the round pin axle 14 leads to the round pin axle 14 by force when round pin axle 14 is blocked to be died, it is lighter to pull out the round pin.

As shown in fig. 2, the pin pulling apparatus further includes a sleeve 22 and a stopping structure 25, the sleeve 22 is sleeved on the connecting rod 21, the stopping structure 25 is connected with one end of the connecting rod 21 far away from the pin pulling head 24, the sleeve 22 is suitable for sliding along the connecting rod 21, and the stopping structure 25 protrudes out of the circumferential surface of the connecting rod 21. When pin pulling is performed, after the pin pulling head 24 is connected with the pin shaft 14, the sleeve 22 is held and force is applied along the length direction of the connecting rod 21, so that the sleeve 22 moves along the connecting rod 21, the sleeve 22 collides with the stopping structure 25, the sleeve 22 stops after colliding with the stopping structure 25, inertia is transmitted to the stopping structure 25, and the connecting rod 21 drives the pin pulling head 24 to perform pin pulling.

As shown in fig. 5, the pin pulling head 24 is a clamping member 241, a first clamping opening 242 is formed in the clamping member 241, an annular clamping groove 144 is formed in the pin shaft 14, the annular clamping groove 144 is circumferentially arranged around the pin shaft 14, and the first clamping opening 242 is suitable for being clamped with the annular clamping groove 144. Here, first bayonet 242 may have a U-shape or a rectangular shape, first bayonet 242 is snapped into ring slot 144, and snap-in piece 241 forms a force fit with a side wall of ring slot 144. When the pin is pulled out, the first bayonet 242 is clamped into the annular clamping groove 144, so that the pin pulling head 24 is matched with the pin shaft 14, and the operation is convenient.

As shown in fig. 5, the clamping member 241 is a first clamping plate, where, in order to increase the stress area and the connection strength between the clamping member 241 and the connecting rod 21, the first clamping plate is perpendicular to the connecting rod 21, and one end surface of the connecting rod 21 near the axial direction of the first clamping plate is connected to the first clamping plate; when pin pulling is performed, the sleeve 22 moves along the connecting rod 21, when the axial leads of the pin shaft 14 and the connecting rod 21 are the same, the stress is most stable, in order to avoid interference between the pin shaft 14 and the connecting rod 21, an avoiding groove 211 is formed in one axial end face, connected with the first clamping plate, of the connecting rod 21, the avoiding groove 211 corresponds to the position of the first clamping opening 242, and the width of the avoiding groove 211 is larger than that of the first clamping opening 242; the pin shaft 14 is a second connecting section 145 from the annular clamping groove 144 to the end close to the pin pulling device, and the avoiding groove 211 is suitable for avoiding the second connecting section 145. The avoiding groove 211 can be a through groove structure with an opening facing the radial direction of the connecting rod 21, and when the first bayonet 242 is clamped into the pin shaft 14, the second connecting section 145 can simultaneously slide into the avoiding groove 211, so that the axial lead of the pin shaft 14 is closer to the axial lead of the connecting rod 21, and the stress of the pin pulling device is more stable.

As shown in fig. 3, the pin screwing head 23 includes a positioning seat 231 and a screwing force-receiving portion 232, the screwing force-receiving portion 232 is connected with the positioning seat 231, and the screwing force-receiving portion 232 and the positioning seat 231 may be integrally connected or detachably connected, for example, screwed; the positioning support 231 is connected with the connecting rod 21, and the positioning support 231 and the connecting rod 21 can be connected in a welding manner or detachably, such as in a threaded manner; the positioning support 231 is adapted to be detachably connected to the pin 14 so that the positioning support 231 rotates around the pin 14, that is, after the positioning support 231 is detachably connected to the pin 14, the positioning support 231 can rotate relative to the pin 14, and specifically, the positioning support 231 and the pin 14 can be screwed or clamped; the screwing stress part 232 is suitable for being in circumferential limit fit with the pin shaft 14, namely, when the positioning support 231 rotates relative to the pin shaft 14, the screwing stress part 232 can be matched with the pin shaft 14 to form force transmission in the circumferential direction of the pin shaft 14, so that the screwing stress part 232 can drive the pin shaft 14 to rotate.

In this embodiment, as shown in fig. 3, the positioning support 231 is a second clamping plate, the second clamping plate is perpendicular to the radial direction of the connecting rod 21, a second bayonet 233 is formed on the second clamping plate, and the screwing force-receiving portion 232 is a protruding structure protruding out of the second clamping plate; the pin shaft 14 is provided with a limiting bulge 143 which protrudes out of the circumferential surface of the pin shaft 14; the second bayonet 233 is adapted to be clamped with the pin 14 and rotate around the pin 14, and the protruding structure is adapted to be in stop fit with the limiting protrusion 143 around the circumference of the pin 14.

Here, the first catch plate is connected to the circumferential outer wall of the connecting rod 21, and the connecting rod 21 may include a connecting section 26, the connecting section 26 is located on the side of the stopping structure 25 away from the sleeve 22, and the first catch plate is connected to the connecting section 26. The pin shaft 14 may be provided with an annular groove 144, and the second bayonet 233 is clamped in the annular groove 144; of course, the second bayonet 233 may also be directly fastened to the outer wall of the pin body 141. The protruding structure is located the second cardboard and keeps away from connecting rod 21 one side, before carrying out the pin pulling, earlier with connecting rod 21 perpendicular to round pin axle 14, makes second bayonet 233 block on round pin axle 14, then rotates connecting rod 21, when protruding structure and spacing arch 143 contact, forms the backstop, realizes ascending power transmission in circumference.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. A screen assembly, comprising a screen (11), a cross-beam (13) and a pin (14); the screen (11) comprises a screen body (111) and a first shaft sleeve (112), wherein at least one first shaft sleeve (112) is connected to two ends of the screen body (111) in the width direction; the cross beam (13) comprises a cross beam body (131) and at least one second shaft sleeve (132) connected to the cross beam body (131); the pin shaft (14) penetrates through the first shaft sleeve (112) and the second shaft sleeve (132) to realize that the screen (11) is connected with each cross beam (13) respectively.

2. The screen assembly of claim 1, wherein the first bushing (112) and/or the second bushing (132) have material discharge holes (133) formed therein, the material discharge holes (133) being downwardly open.

3. The screen assembly of claim 1 or 2, further comprising two end plates (12) respectively disposed at two ends of the screen body (111) in the width direction, wherein the cross beam (13) comprises a first cross beam and a second cross beam, and the first cross beam and the second cross beam are respectively disposed at two ends of the screen body (111) in the length direction; the two opposite ends of the cross beam body (131) are detachably connected with one of the end plates (12), and the two ends of the screen body (111) in the width direction are suitable for being connected with or abutted against the end plates respectively.

4. The screen assembly of claim 3, wherein the end plate (12) has a mounting hole formed therein, the pin (14) includes a pin body (141) and a limiting plate (142), the limiting plate (142) is vertically connected to one end of the pin body (141), the limiting plate (142) is adapted to be attached to a side of the end plate (12) away from the cross beam (13), the pin body (141) passes through the mounting hole, the first bushing (112) and the second bushing (132), and the limiting plate (142) is adapted to be detachably connected to the end plate (12).

5. The screen assembly of claim 4, further comprising a threaded connector (16), wherein the retainer plate (142) has a through hole (146) and the end plate (12) has a threaded hole, and the threaded connector (16) is adapted to pass through the through hole (146) and then be threadedly connected to the end plate (12).

6. The screen assembly of claim 4, wherein the pin body (141) includes first and second coaxially disposed connecting sections (145), opposite sides of the retainer plate (142) are connected to the first and second connecting sections (145), respectively, the first connecting section passes through the mounting hole, the first bushing (112) and the second bushing (132), and the second connecting section (145) protrudes from the end plate (12).

7. The screen assembly of claim 6, wherein the second connecting section (145) has a detachable connection structure formed thereon, the detachable connection structure being disposed around a circumference of the second connecting section (145), and the detachable connection structure being an annular clamping groove (255) or a threaded structure.

8. The screen assembly of claim 5, wherein the pin (14) further comprises a limiting protrusion (143), the limiting protrusion (143) is connected with an edge of the limiting plate (142), and the limiting protrusion (143) extends from the limiting plate (142) to a side away from the pin body (141).

9. The screen assembly of claim 1 or 2, wherein a plurality of first bushings (112) are respectively connected to two ends of the screen body (111) in the length direction, a plurality of second bushings (132) are connected to the cross beam (13), and the first bushings (112) and the second bushings (132) are arranged in a staggered manner.

10. A vibrating screen comprising a screen assembly as claimed in any one of claims 1 to 9.

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