Quick tightening device for screen

Abstract

The utility model relates to a quick tightening device for a screen mesh, which comprises two fixing plates, the fixing plates are used for connecting a screen frame, a rotating shaft is arranged between the two fixing plates, two ends of the rotating shaft are rotatably connected with the fixing plates, a plurality of supporting blocks are arranged on the outer wall surface of the rotating shaft, and the outer walls of all the supporting blocks are fixedly connected with a pipe barrel. An opening is formed in the side wall of the pipe barrel in the length direction and used for hanging a screen. One end of the rotating shaft penetrates out of the fixing plate and is provided with a ratchet wheel locking mechanism, and a square head is arranged at the outer end of the rotating shaft and used for being connected with a wrench in a sleeved mode. When the screen is tightened or loosened, the operation is more convenient, and more time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screening equipment field, concretely to a quick tightening device for screen. BACKGROUND

[0002] The screen is the main equipment of the ore dressing work, the existing screen structure form is various, and the screening part is mostly composed of the screen frame and screen, the screen is hung on the screen frame and is equipped with the tightening device, the screen is tightened through the tightening device, the existing tightening device structure is complex, and the operation is inconvenient, and the user operation experience is poor when tightening the screen. SUMMARY

[0003] The utility model discloses a quick tightening device for screen.

[0004] The specific scheme of the utility model discloses a quick tightening device for screen, including two fixed plates, and the fixed plate is used for connecting the screen frame, and a pivot is equipped between the two fixed plates, and the both ends of the pivot are rotatably connected with the fixed plate, and the outer wall surface of the pivot is equipped with a plurality of support blocks, and the outer wall of all support blocks is fixedly connected with a pipe cylinder, and the lateral wall of the pipe cylinder is provided with an opening along the length direction, and the opening is used for hanging the screen, one end of the pivot passes out the fixed plate and is equipped with a ratchet wheel locking mechanism, and the outer end of the pivot is provided with a square head, and the square head is used for sleeving the spanner.

[0005] Further, the outer wall of the support block is welded with the inner wall of the pipe cylinder, the inner wall of the support block is slidably connected with the pivot, and the combination surface of the support block and the pivot is connected through a key.

[0006] Further, the support block is provided with an opening, and the opening is equipped with a locking screw.

[0007] Further, the outer end surface of the spanner is provided with an arc-shaped through hole, the corresponding fixed plate is provided with a support column, the end part of the support column is provided with a threaded hole, and the threaded hole is corresponded with the position of the arc-shaped through hole.

[0008] Further, the ratchet wheel locking mechanism includes a ratchet wheel and a pawl, the ratchet wheel is fixedly connected with the pivot, the pawl is installed on the fixed plate and is rotatably connected with the fixed plate, the tip of the pawl is matched with the ratchet wheel, a torsional spring is installed on the pawl, and the torsional spring is used for making the pawl tightly adhere to the ratchet wheel.

[0009] The utility model has the advantages that the operation of tightening and loosening the screen is more convenient, the structure is simpler, and the manufacturing cost is lower. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the three-dimensional schematic view of the utility model, and

[0011] Figure 2 It is the front view of the utility model.

[0012] Figure 3 is Figure 2 A-A view of

[0013] Figure 4 is Figure 2 the right view of

[0014] In the figure: 1, pipe cylinder; 2, fixed plate; 3, ratchet locking mechanism; 31, ratchet; 32, pawl; 33, operating rod; 4, rotating shaft; 5, wrench; 6, support column; 7, support block; 8, key. DETAILED DESCRIPTION

[0015] Referring to Figures 1-4 , the embodiment is a quick tightening device for screen, comprising two fixed plates 2 for connecting screen frame, a rotating shaft 4 is arranged between the two fixed plates 2, the rotating shaft 4 is rotatably connected with the fixed plates 2 at both ends, the outer wall surface of the rotating shaft 4 is provided with a plurality of support blocks 7, the outer wall of all the support blocks 7 is fixedly connected with a pipe cylinder 1, the side wall of the pipe cylinder 1 is provided with an opening along the length direction, and the opening is used for hanging the screen; one end of the rotating shaft 4 penetrates through the fixed plate 2 and is provided with a ratchet locking mechanism 3, and the outer end of the rotating shaft 4 is provided with a square head for sleeving a wrench 5. Further, the outer wall of the support block 7 is welded with the inner wall of the pipe cylinder 1, the inner wall of the support block 7 is slidably connected with the rotating shaft 4, and the combination surface of the support block 7 and the rotating shaft 4 is connected through a key 8.

[0016] The utility model discloses the rotating shaft 4 and support block 7 are set as sliding connection, and the torsion is transmitted through the key 8, when needing to disassemble, the rotating shaft 4 can be pulled out from the pipe cylinder 1 along the axial direction, thereby being convenient for disassembly, overhaul.

[0017] Further, the support block 7 is provided with an opening, and a locking screw is arranged in the opening.

[0018] Further, the outer end surface of the wrench 5 is provided with an arc-shaped through hole, the corresponding fixed plate 2 is provided with a support column 6, the end portion of the support column 6 is provided with a threaded hole, and the threaded hole is positionally corresponding to the arc-shaped through hole.

[0019] Further, the ratchet locking mechanism 3 comprises a ratchet 31 and a pawl 32, the ratchet 31 is fixedly connected with the rotating shaft 4, the pawl 32 is installed on the fixed plate 2 and rotatably connected with the fixed plate 2, the tip end of the pawl 32 is matched with the ratchet 31, a torsional spring is arranged on the pawl 32, and the torsional spring is used for making the pawl 32 tightly adhere to the ratchet 31.

[0020] The ratchet locking mechanism 3 of the utility model is the same as the ratchet and pawl mechanism in the ratchet linkage type screen hanging device of patent ZL2023213789763, name.

[0021] The working principle of the utility model is as follows: one end of the screen is hung on the screen frame, and the other end of the screen is installed at the opening of the pipe cylinder 1 of the utility model; when the screen is tightened, only the wrench 5 is needed to drive the rotating shaft 4 to rotate; due to the structural characteristics of the ratchet wheel 31 and the pawl 32, the rotating shaft 4 has small resistance when rotating in the tightening direction; the rotating shaft 4 drives the support block 7 through the key 8; the support block 7 drives the pipe cylinder 1 to rotate; the pipe cylinder 1 automatically tightens the screen; when the operation of the wrench 5 is stopped, the ratchet wheel 31 is automatically clamped by the pawl 32 and cannot rebound; in order to prevent the locking function of the ratchet wheel 31 and the pawl 32 from failing, the utility model increases an arc-shaped through hole on the wrench 5 to lock the wrench 5 and the support column 6 through locking bolts, so that the wrench 5 can still be locked when the ratchet wheel 31 and the pawl 32 fail.

[0022] When the screen needs to be loosened, the locking bolt of the wrench 5 is loosened, and then the operating rod 33 is pulled upward to make the pawl 32 disengage from the ratchet wheel 31, so that the screen can be loosened.

Claims

1. A quick tightening device for a screen, characterized by: The application relates to a rotary screen frame, which comprises two fixing plates used for connecting a screen frame, a rotating shaft arranged between the two fixing plates, rotating connection of the rotating shaft with the fixing plates at two ends, a plurality of supporting blocks arranged on the outer wall of the rotating shaft, a pipe cylinder fixedly connected to the outer wall of all the supporting blocks, an opening arranged on the side wall of the pipe cylinder along the length direction, and a screen mesh hung on the opening; one end of the rotating shaft penetrates through the fixing plate and is provided with a ratchet locking mechanism, and a square head is arranged on the outer end of the rotating shaft, which is used for sleeving a wrench.

2. A quick tightening device for a screen according to claim 1, characterized in that: The outer wall of the supporting block is welded to the inner wall of the pipe cylinder, the inner wall of the supporting block is slidingly connected to the rotating shaft, and the combination surface of the supporting block and the rotating shaft is connected through a key.

3. A quick tightening device for a screen according to claim 2, characterized in that: The supporting block is provided with an opening, and the opening is provided with a locking screw.

4. A quick tightening device for a screen according to claim 1, characterized in that: The outer end surface of the wrench is provided with an arc-shaped through hole, a supporting column is arranged on the corresponding fixing plate, the end of the supporting column is provided with a threaded hole, and the threaded hole is positionally corresponding to the arc-shaped through hole.

5. A quick tightening device for a screen according to claim 1, characterized in that: The ratchet locking mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly connected to the rotating shaft, the pawl is mounted on the fixing plate and is rotationally connected to the fixing plate, the tip of the pawl is matched with the ratchet wheel, a torsional spring is arranged on the pawl, and the torsional spring is used for tightly abutting the pawl to the ratchet wheel.

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