Stable engineering plastic pulley

Abstract

The utility model discloses a stable type engineering plastic pulley which comprises an installation unit and a pulley unit, the installation unit comprises a pulley yoke, first bearings are fixedly connected to the front face and the back face of the pulley yoke in an embedded mode, and the front face of the pulley yoke is movably connected with a threaded rod and the pulley unit in a penetrating mode through the first bearings. Comprising a pulley body located on the inner side of the pulley yoke and movably connected through a screw, a through opening is formed in the front face of the pulley body, second bearings are fixedly connected to the positions, located on the inner side of the through opening, of the front face and the back face of the pulley body, a groove is formed in the outer side of the pulley body, and steel balls are arranged on the outer side of the groove. Through the arrangement of the first bearing, the second bearing, the steel balls and the pulley sleeve, the flexibility of the plastic pulley is improved, the plastic pulley rotates through a plurality of rotating structures, and the stability of the plastic pulley is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a stable engineering plastic pulley. Background Art

[0002] A pulley is a simple machine used to lift heavy objects and save effort. It is a small wheel with grooves around its perimeter that can rotate around an axis. A pulley is a simple machine that can rotate around a central axis and consists of a grooved disc that rotates around a central axis and a flexible cable (rope, tape, steel cable, chain, etc.) that spans the disc.

[0003] The patent document with prior art announcement number CN209972062U provides a pulley, including a pulley body and a rubber tire sleeved on the outer peripheral surface of the pulley body. The pulley body is provided with threaded columns at both ends of one radial center line, and the pulley body is composed of two pulley blocks formed separately along this radial center line, and also includes a threaded barrel cap with an internal thread, and the threaded barrel cap is engaged and connected with the threaded column formed after the two pulley blocks are fitted together. This pulley uses two pulley blocks to form a pulley body, and the two pulley blocks are fixed by threaded engagement, that is, the threaded column is completely formed after the two pulley blocks are fitted together, and the threaded barrel cap is screwed on. The threaded engagement makes the two pulley blocks form the pulley body. The advantage of this structure is that after the pulley is damaged, only the damaged pulley block needs to be replaced, and there is no need to replace the entire pulley, thereby reducing the user's maintenance cost.

[0004] However, the existing stable engineering plastic pulleys are mostly used in conjunction with bearings during use. However, the bearings are all installed on the inner side of the pulley. When the bearings are damaged, the increase in friction will affect the rotation of the pulley, making the pulley unable to be used normally, resulting in the problem of poor stability of the plastic pulley. For this reason, we propose a stable engineering plastic pulley. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a stable engineering plastic pulley to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A stable engineering plastic pulley includes a mounting unit and a pulley unit, wherein the mounting unit includes a pulley frame, the front and back sides of the pulley frame are both embedded with first bearings and fixedly connected, and the front side of the pulley frame is movably connected to a screw rod passing through the first bearing;

[0009] The pulley unit includes a pulley body located on the inner side of the pulley frame and movably connected by a screw, a through opening is provided on the front side of the pulley body, and a second bearing is fixedly connected to the front and back sides of the pulley body located inside the through opening, a groove is provided on the outer side of the pulley body, a steel ball is provided on the outer side of the groove, and a pulley sleeve is movably connected to the inner side of the groove through the steel ball.

[0010] Preferably, a connecting shaft is fixedly connected to the top of the pulley frame, and a mounting ring is fixedly connected to the bottom end of the connecting shaft.

[0011] Preferably, the outer side of one end of the screw is threadedly connected to a nut sleeve, and the diameter of the screw is adapted to the inner diameter of the nut sleeve.

[0012] Preferably, two second bearings are provided, and the two second bearings are movably connected to the screw rod.

[0013] Preferably, the steel balls are provided in plurality, and the plurality of steel balls are provided in two groups, and the steel balls in the two groups are arranged at equal distances.

[0014] Preferably, the pulley body is made of plastic material, the pulley body is a solid structure, and the outer surface of the pulley body is smooth.

[0015] (3) Beneficial effects

[0016] The utility model provides a stable engineering plastic pulley with the following beneficial effects:

[0017] (1) This stable engineering plastic pulley is provided with a first bearing, a second bearing, a steel ball and a pulley sleeve. When the plastic pulley is used, the staff places the steel cable on the pulley sleeve. When the steel cable is pulled, the pulley body can be rotated through the second bearing and the screw, or the pulley body is rotated through the screw and the first bearing, and the pulley sleeve is rotated with the pulley body through the steel ball. When the second bearing on the plastic pulley is damaged, the pulley body is rotated through the screw and the first bearing, and the pulley sleeve is rotated with the pulley body through the steel ball, so that the plastic pulley can operate normally. When the first bearing is damaged, the pulley body is rotated through the second bearing and the screw, and the pulley sleeve is rotated with the pulley body through the steel ball, so that the plastic pulley can operate normally. When the pulley sleeve and the steel ball are damaged, the pulley body is rotated through the second bearing and the screw, or the pulley body is rotated through the screw and the first bearing, so that the plastic pulley can also operate normally. Therefore, the flexibility of the plastic pulley is improved, and the plastic pulley is rotated through multiple rotating structures, thereby ensuring the stability of the plastic pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a partial structural diagram of the installation unit of the utility model;

[0020] Figure 3 It is a partial structural diagram of the pulley body of the utility model;

[0021] Figure 4 It is a cross-sectional view of the pulley unit of the utility model.

[0022] In the figure: 1. Mounting unit; 101. Pulley frame; 102. Connecting shaft; 103. Mounting ring; 104. Screw; 105. Nut sleeve; 106. First bearing; 2. Pulley unit; 201. Pulley body; 202. Groove; 203. Pulley sleeve; 204. Second bearing; 205. Through port; 206. Steel ball. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] Embodiment 1: A stable engineering plastic pulley includes an installation unit 1 for installing the pulley, including a pulley frame 101 for installing a pulley body 201, the front and back sides of the pulley frame 101 are embedded with a first bearing 106 fixedly connected to the pulley body 201 to reduce friction and extend the service life, and the front side of the pulley frame 101 is movably connected with a screw 104 for installing the pulley body 201 through the first bearing 106.

[0026] Furthermore, a connecting shaft 102 for connecting to a mounting ring 103 is fixedly connected through the top of the pulley frame 101 , and a mounting ring 103 for installation is fixedly connected to the bottom end of the connecting shaft 102 .

[0027] Furthermore, the outer side of one end of the screw rod 104 is threadedly connected to a nut sleeve 105 for fixing and limiting, and the diameter of the screw rod 104 is adapted to the inner diameter of the nut sleeve 105 .

[0028] As can be seen from the above, by locating the pulley body 201 on the inner side of the pulley frame 101 and then inserting the screw 104 into the first bearing 106 of the pulley frame 101, the screw 104 will be inserted into the through opening 205, and the screw 104 will pass through the second bearing 204, and then the nut sleeve 105 is installed on the screw 104 to complete the installation. When the steel cable is pulled, the pulley body 201 rotates through the screw 104 and the first bearing 106.

[0029] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the direction of force is changed to a pulley unit 2 that is more convenient to operate, including a pulley body 201 located on the inner side of the pulley frame 101 and movably connected to it by a screw 104 for achieving the purpose of saving effort, a through opening 205 for installing a second bearing 204 and a screw 104 is provided on the front side of the pulley body 201, and a second bearing 204 for reducing friction and extending the service life of the pulley body 201 is fixedly connected on the front and back sides of the pulley body 201 located on the inner side of the through opening 205, a groove 202 for installing a steel cable is provided on the outer side of the pulley body 201, a steel ball 206 for reducing friction and extending the service life is provided on the outer side of the groove 202, and a pulley sleeve 203 for installing a steel cable is movably connected to the inner side of the groove 202 through the steel ball 206.

[0030] Furthermore, two second bearings 204 are provided, and the two second bearings 204 are movably connected to the screw rod 104 .

[0031] Furthermore, the steel balls 206 are provided in plurality, and the plurality of steel balls 206 are provided in two groups, and the two groups of steel balls 206 are arranged at equal intervals.

[0032] Furthermore, the pulley body 201 is made of plastic material, the pulley body 201 is a solid structure, and the outer surface of the pulley body 201 is smooth.

[0033] As can be seen from the above, when using a plastic pulley, the staff places the steel cable on the pulley sleeve 203. When the steel cable is pulled, the pulley body 201 can rotate through the second bearing 204 and the screw 104, or the pulley body 201 rotates through the screw 104 and the first bearing 106, and the pulley sleeve 203 rotates through the steel ball 206 and the pulley body 201.

[0034] Furthermore, when the second bearing 204 on the plastic pulley is damaged, the pulley body 201 rotates through the screw 104 and the first bearing 106, and the pulley sleeve 203 rotates through the steel ball 206 and the pulley body 201, so that the plastic pulley operates normally.

[0035] Furthermore, when the first bearing 106 is damaged, the pulley body 201 rotates with the screw 104 through the second bearing 204 , and the pulley sleeve 203 rotates with the pulley body 201 through the steel ball 206 , so that the plastic pulley can operate normally.

[0036] Furthermore, when the pulley sleeve 203 and the steel ball 206 are damaged, the pulley body 201 rotates through the second bearing 204 and the screw 104, or the pulley body 201 rotates through the screw 104 and the first bearing 106, so that the plastic pulley can also operate normally.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of protection of the patent of the present invention.

Claims

1. A stable engineering plastic pulley, characterized by: The invention comprises an installation unit (1), comprising a pulley frame (101), wherein the front and back sides of the pulley frame (101) are both embedded with a first bearing (106) and fixedly connected thereto, and the front side of the pulley frame (101) is movably connected thereto via a screw rod (104) passing through the first bearing (106); The pulley unit (2) comprises a pulley body (201) located inside the pulley frame (101) and movably connected via a screw (104); a through opening (205) is provided on the front of the pulley body (201); a second bearing (204) is fixedly connected to the front and back of the pulley body (201) located inside the through opening (205); a groove (202) is provided on the outside of the pulley body (201); a steel ball (206) is provided on the outside of the groove (202); and a pulley sleeve (203) is movably connected to the inside of the groove (202) via the steel ball (206).

2. A stable engineering plastic pulley according to claim 1, characterized in that: A connecting shaft (102) is fixedly connected to the top of the pulley frame (101), and a mounting ring (103) is fixedly connected to the bottom end of the connecting shaft (102).

3. The stable engineering plastic pulley according to claim 1, characterized in that: The outer side of one end of the screw rod (104) is threadedly connected to a nut sleeve (105), and the diameter of the screw rod (104) is adapted to the inner diameter of the nut sleeve (105).

4. The stable engineering plastic pulley according to claim 1, characterized in that: Two second bearings (204) are provided, and the two second bearings (204) are movably connected to the screw (104).

5. The stable engineering plastic pulley according to claim 1, characterized in that: The steel balls (206) are provided in plurality, and the plurality of steel balls (206) are provided in two groups, and the two groups of steel balls (206) are arranged at equal intervals.

6. The stable engineering plastic pulley according to claim 1, characterized in that: The pulley body (201) is made of plastic material, the pulley body (201) is a solid structure, and the outer surface of the pulley body (201) is smooth.

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