Manual connecting rod expansion shaft device
By designing the manual link bloating shaft device, the mechanical structure of the rod and the tightness is used to solve the problem of high mechanical bloating shaft operation difficulty and complex maintenance, and achieve the effect of simple operation, convenient maintenance and low cost.
Patent Information
- Application Number
- CN202421023510.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing mechanical expansion shaft is difficult to operate, complex maintenance and high cost, which affects the use effect.
A manual connecting rod swell shaft device is designed, including guidance, end cover, end cover, rotation axis, push -pull shaft, rod, tight block, hinge sales and grip. Try to work and swelling to achieve simple fixing and maintenance of materials.
The operation is simple, fixed, and easy to disassemble and maintain conveniently, reducing the cost of use.
Smart Images
Figure CN222410569U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of manual shaft expansion, in particular to a manual connecting rod shaft expansion device. Background Art
[0002] "Expansion shaft" also called "expansion shaft" is a special clamping shaft, generally divided into pneumatic expansion shaft and mechanical expansion shaft. The pneumatic expansion shaft is expanded by gas pressure, and pneumatic components are installed inside the shaft. The expansion force and expansion range are adjusted by controlling the opening and closing of the gas source. The mechanical expansion shaft uses a mechanical force transmission device for expansion, such as tapered bearings and cylindrical bearings. The use of expansion shafts is extremely convenient and quick, and it is often used in various winding, unwinding, and slitting processes.
[0003] The expansion shafts commonly used for winding and unwinding are all mechanical, but the existing mechanical expansion shafts require a relatively complex mechanical structure and adjustment method, are difficult to operate, and are troublesome to use. In addition, since the use cost of the mechanical expansion shaft is high, it is necessary to maintain the inside of the mechanical expansion shaft from time to time after long-term use to avoid wear and tear of its internal parts, thereby affecting the use effect.
[0004] Therefore, a manual connecting rod shaft expansion device with simple operation and convenient maintenance is particularly proposed. Utility Model Content
[0005] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a manual connecting rod shaft expansion device which is simple to operate and convenient to maintain.
[0006] In order to solve the above technical problems, the utility model provides: a manual connecting rod expansion shaft device, including a guide sleeve, an end cover, a rotating shaft, a push-pull shaft, a connecting rod sheet, a tightening block, a hinge pin and a handle, the guide sleeve is provided with a guide groove, and the guide sleeve has at least two guide grooves; the end cover is installed at the top of the guide sleeve; the rotating shaft is rotatably connected to the bottom of the guide sleeve; the push-pull shaft slides through the inner side of the end cover, and at least four slide grooves are provided on the inner side of the push-pull shaft; there are at least four connecting rod sheets, and the four connecting rod sheets are symmetrically rotationally connected to the four slide grooves of the push-pull shaft; there are at least two tightening blocks, and the two tightening blocks are respectively rotationally connected to the outward ends of the four connecting rod sheets; the hinge pin is rotationally connected to the push-pull shaft; the handle is rotationally connected to the top of the push-pull shaft through the hinge pin.
[0007] Preferably, a compression spring is also included, and the compression spring is connected to the inner upper part of the push-pull shaft.
[0008] Preferably, the device further comprises a rubber block, at least two of which are symmetrically connected to the two expansion blocks.
[0009] Preferably, an anti-skid pad is also included, and the anti-skid pad is connected to one side of the handle.
[0010] Preferably, a screw is further included, which is threadably connected between the inner side of the end cover and the inner upper side of the guide sleeve.
[0011] Preferably, the anti-slip pad is in an inclined state.
[0012] Preferably, the guide sleeve and the push-pull shaft are coaxial.
[0013] Preferably, the movement trajectories of the four connecting rod pieces are consistent.
[0014] Preferably, the size of the expansion block is consistent with the size of the guide groove of the guide sleeve.
[0015] Preferably, the guide sleeve and the push-pull shaft are both in a vertical state.
[0016] Beneficial effects: 1. By manually holding the handle and rotating it clockwise, the bottom of the handle squeezes the push-pull shaft to make it slide inside the guide sleeve and drive the front end of the pull rod piece to tilt downward, and the rear end of the pull rod piece will tilt upward and drive the expansion block to slide outward to tighten and fix the inner tube of the material roll, achieving the effect of simple operation and fast fixing method;
[0017] 2. The connection between the end cover and the guide sleeve is canceled by twisting the screw, and the end cover is removed to inspect the connecting rod piece and the expansion block inside the guide sleeve, so as to achieve the effect of simple disassembly and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0019] Figure 2 It is a three-dimensional structural schematic diagram of the push-pull shaft, end cover, rotating shaft and other components of the utility model.
[0020] Figure 3 It is a three-dimensional structural schematic diagram of the push-pull shaft, connecting rod sheet and expansion block of the utility model.
[0021] Figure 4 It is a three-dimensional structural schematic diagram of the guide sleeve, end cover, compression spring and other components of the utility model.
[0022] Figure numbers: 1-guide sleeve, 2-end cover, 3-rotating shaft, 4-push-pull shaft, 5-connecting rod piece, 6-expansion block, 7-hinge pin, 8-handle, 9-compression spring, 10-rubber block, 11-anti-slip pad, 12-screw. DETAILED DESCRIPTION
[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0024] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0025] Embodiment: A manual connecting rod expansion device, such as Figure 1-Figure 4 As shown, it includes a guide sleeve 1, an end cover 2, a rotating shaft 3, a push-pull shaft 4, a connecting rod piece 5, a tightening block 6, a hinge pin 7 and a handle 8. Four rectangular guide grooves are opened on the guide sleeve 1; the end cover 2 is installed on the top of the guide sleeve 1; the rotating shaft 3 is rotatably connected to the bottom end of the guide sleeve 1, and the rotating shaft 3 is a support body of the guide sleeve 1; the push-pull shaft 4 slides through the center position of the inner side of the end cover 2, and the guide sleeve 1 and the push-pull shaft 4 are in a coaxial state. The top end of the push-pull shaft 4 protrudes from the top of the end cover 2, and the lower end of the push-pull shaft 4 extends into the inside of the guide sleeve 1 and is close to its bottom end, and the inner side of the push-pull shaft 4 is provided with eight symmetrical sliding grooves from top to bottom; there are eight connecting rod pieces 5, and the eight connecting rod pieces 5 are symmetrically rotatably connected to the eight sliding grooves of the push-pull shaft 4 When the push-pull shaft 4 is pulled, the eight connecting rod pieces 5 will rotate at the same time, and one end of the eight connecting rod pieces 5 is facing outward. There are four expansion blocks 6, and the four expansion blocks 6 are respectively rotatably connected to the outward ends of the eight connecting rod pieces 5. The size of the four expansion blocks 6 is consistent with the size of the guide groove of the guide sleeve 1. The four expansion blocks 6 slide in the guide groove of the guide sleeve 1 through the eight connecting rod pieces 5, and the four expansion blocks 6 are all in a symmetrical state; the hinge pin 7 is rotatably connected to the inner side of the protruding part of the upper end of the push-pull shaft 4, and the two ends of the hinge pin 7 extend outward; the handle 8 is rotatably connected to the top of the push-pull shaft 4 through the hinge pin 7, and one side of the handle 8 is in contact with the end cover 2, and the handle 8 is a force-bearing driving member that drives the connecting rod piece 5 and the expansion block 6 by pulling the push-pull shaft 4.
[0026] like Figure 4 As shown, a compression spring 9 is also included, and the compression spring 9 is connected to the upper inner part of the push-pull shaft 4. By arranging the compression spring 9, the process of sliding and returning the push-pull shaft 4 to the original position is faster when the handle 8 is pulled.
[0027] like Figure 2As shown, it also includes a rubber block 10, there are four rubber blocks 10, and the four rubber blocks 10 are symmetrically connected to the end faces of the four tightening blocks 6. The rubber blocks 10 are arranged so as not to squeeze and damage the inner tube of the material roll when the inner tube of the material roll is tightened by the tightening blocks 6, so as to increase the auxiliary adhesion force.
[0028] like Figure 1 As shown, it also includes an anti-skid pad 11 for assisting in turning the handle 8. There are two groups of anti-skid pads 11. The two groups of anti-skid pads 11 are inclined at 45° to symmetrically match the finger positions of the operator when grasping the handle 8. The anti-skid pad 11 is connected to one side of the handle 8.
[0029] like Figure 2 As shown, screws 12 are also included. There are four screws 12. The four screws 12 are symmetrically connected between the inner side of the end cover 2 and the inner upper side of the guide sleeve 1 through threads. The screws 12 are used to connect and fix the guide sleeve 1 and the end cover 2.
[0030] When the device is needed, first place the device vertically on the bearing seat through the rotating shaft 3, then put the material roll sleeve to be fixed into the outer side of the guide sleeve 1, manually hold the handle 8 and rotate it clockwise on the top of the push-pull shaft 4 through the hinge pin 7. When the other side of the handle 8 is completely in contact with the anti-slip pad 11, the force applied when manually holding the handle 8 is greater and it is not easy to slip. While the handle 8 rotates clockwise, its bottom will squeeze the push-pull shaft 4, so that the push-pull shaft 4 slides downward on the inside of the guide sleeve 1. While the push-pull shaft 4 slides downward, it will drive the front end of the pull rod sheet to tilt downward, and the rear end of the pull rod sheet to tilt upward and drive the expansion block 6 to slide outward along the slide groove of the guide sleeve 1, so that the expansion block 6 tightens and fixes the inner tube of the material roll, and when the expansion block 6 is tightened to the material roll During the tightening process, the rubber block 10 can prevent the tensioning block 6 from directly contacting the inner tube of the material roll and causing wear thereof. When the material roll needs to be removed, the handle 8 is rotated counterclockwise again so that the handle 8 pulls the push-pull shaft 4 to slide upward in the guide sleeve 1, and drives the connecting rod piece 5 to reset and no longer tighten the inner tube of the material roll. During the reset of the connecting rod piece 5, the compression spring 9 will stretch and further drive the push-pull shaft 4 to slide upward. When the tensioning block 6 is completely retracted into the guide sleeve 1, the material roll is directly removed to complete the placement of the material roll. When it is necessary to maintain and inspect the various components in the guide sleeve 1, the connection between the end cover 2 and the guide sleeve 1 is canceled by twisting the screw 12, thereby removing the end cover 2 to inspect the connecting rod piece 5 and the tensioning block 6 inside the guide sleeve 1.
[0031] Obviously, the embodiments described above are only part of the embodiments of the present utility model, rather than all of the embodiments. They only express the preferred implementation mode of the present utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present utility model.
[0032] It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, they can also make several modifications, increases and decreases in quantity, improvements and substitutions. Therefore, based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the utility model.
Claims
1. A manual connecting rod expansion device, characterized in that: Included are: A guide sleeve (1), wherein the guide sleeve (1) is provided with guide grooves, and the guide sleeve (1) has at least two guide grooves; An end cover (2) is mounted on the top end of the guide sleeve (1); A rotating shaft (3) rotatably connected to the bottom end of the guide sleeve (1); A push-pull shaft (4) is slidably inserted into the center of the inner side of the end cover (2), the top end of the push-pull shaft (4) extends toward the top of the end cover (2), the lower end of the push-pull shaft (4) extends into the interior of the guide sleeve (1) and is close to the bottom end thereof, and at least four slide grooves are provided on the inner side of the push-pull shaft (4) which are symmetrical from top to bottom. Connecting rod pieces (5), there are at least four connecting rod pieces (5), the four connecting rod pieces (5) are symmetrically rotatably connected to the four sliding grooves of the push-pull shaft (4), and one end of the four connecting rod pieces (5) is facing outwards; A tightening block (6), wherein there are at least two of the tightening blocks (6), and the two tightening blocks (6) are rotatably connected to the outward ends of the four connecting rod pieces (5), and the two tightening blocks (6) are in a front-to-back symmetrical state; A hinge pin (7) rotatably connected to the elongated portion of the upper end of the push-pull shaft (4); The handle (8) is rotatably connected to the top of the push-pull shaft (4) through the hinge pin (7), and one side of the handle (8) is in contact with the end cover (2).
2. A manual connecting rod expansion device according to claim 1, characterized in that: Also included are: A compression spring (9) is connected to the inner upper portion of the push-pull shaft (4).
3. A manual connecting rod expansion device according to claim 2, characterized in that: Also included are: A rubber block (10), wherein there are at least two rubber blocks (10), and the two rubber blocks (10) are symmetrically connected to the two expansion blocks (6).
4. A manual connecting rod expansion device according to claim 3, characterized in that: Also included are: An anti-slip pad (11) is connected to one side of the handle (8).
5. A manual connecting rod expansion device according to claim 4, characterized in that: Also included are: The screw (12) is connected between the inner side of the end cover (2) and the inner upper side of the guide sleeve (1) through threads.
6. A manual connecting rod expansion device according to claim 5, characterized in that: The anti-slip pad (11) is in an inclined state at 45°.
7. A manual connecting rod expansion device according to claim 6, characterized in that: The guide sleeve (1) and the push-pull shaft (4) are in a coaxial state.
8. A manual connecting rod expansion device according to claim 7, characterized in that: The movement trajectories of the four connecting rod pieces (5) are consistent.
9. A manual connecting rod shaft expansion device according to claim 8, characterized in that: The size of the two expansion blocks (6) is consistent with the size of the guide groove of the guide sleeve (1).
10. A manual connecting rod shaft expansion device according to claim 9, characterized in that: The guide sleeve (1) and the push-pull shaft (4) are both in a vertical state.