Reversing belt pulley

Abstract

The reversing belt pulley comprises a main shaft, the surface of the main shaft is sleeved with a movable sleeve, the surface of the movable sleeve is fixedly connected with a positioning insertion block, a sliding rod is fixedly connected between the two sides of an inner cavity of the main shaft, and the surface of the sliding rod is slidably connected with a sliding sleeve; and the rear side of the sliding sleeve is fixedly connected with a connecting block, the rear side of the connecting block penetrates through the main shaft and is fixedly connected with a movable sleeve, and the front side and the rear side of the top of the movable sleeve are both in threaded connection with screws. By arranging the main shaft, the movable sleeve, the positioning insertion block, the sliding rod, the sliding sleeve, the connecting block, the screw rod, the belt pulley bodies, the clamping groove and the oiling assembly, the two belt pulley bodies can be controlled to perform reversing operation by adjusting the using position of the positioning insertion block, so that the positioning insertion block is inserted into the clamping groove, and the belt pulley body on the other side cannot be linked with the main shaft; therefore, reversing work is achieved, workers do not need to replace the belt manually, and safety is improved.

Description

Technical Field

[0001] The present application relates to the field of pulleys, and in particular to a reversing pulley. Background Art

[0002] A pulley is a mechanical component, usually made of metal or plastic, used to connect two rotating shafts and transmit power. It is widely used in various mechanical equipment, such as motors, fans, and lathes. It is a key component for achieving power transmission and motion, and plays an important role in industry, agriculture, transportation and other fields.

[0003] Most existing pulleys can only be equipped with a set of transmission belts to transmit power to another rotating shaft. When power needs to be transmitted to multiple rotating shafts separately, the worker needs to rotate the belts and put them on the pulleys on the surfaces of the corresponding rotating shafts. The reversal work cannot be performed quickly and conveniently. In addition, the worker's fingers are easily pinched by the belts and pulleys when reversing, which increases the danger during the work process and is not conducive to use. Summary of the Invention

[0004] The purpose of this application is to provide a reversing pulley that has the advantages of quickly performing reversing work, not requiring workers to disassemble and assemble the belt, improving work efficiency, and avoiding injuries to workers.

[0005] To achieve the above-mentioned purpose, the present application also provides a reversing pulley, including a main shaft, a movable sleeve is provided on the surface of the main shaft, a positioning plug is fixedly connected to the surface of the movable sleeve, a sliding rod is fixedly connected between the two sides of the main shaft inner cavity, the surface of the sliding rod is slidably connected to the sliding sleeve, the rear side of the sliding sleeve is fixedly connected to the connecting block, the rear side of the connecting block passes through the main shaft and is fixedly connected to the movable sleeve, the front and rear sides of the top of the movable sleeve are threadedly connected to screws, both sides of the main shaft surface are movably connected to the pulley body through bearings, the opposite sides of the two pulley bodies are provided with a card slot, and the opposite sides of the two pulley bodies are fixedly connected to a refueling assembly.

[0006] Preferably, the refueling assembly includes a storage box, the rear side of the inner cavity of the storage box is fixedly connected to a tension spring, the front side of the tension spring is fixedly connected to a piston, the front side of the storage box is connected to a delivery pipe, and the opposite sides of the two delivery pipes are fixedly connected to the pulley body.

[0007] Preferably, a counterweight is fixedly connected to the front side of the piston, and opposite sides of the two storage boxes are connected to oil filling pipes, and one end of the oil filling pipe away from the storage box is threadedly connected to a sealing cap.

[0008] Preferably, the front side and the rear side of the top of the main shaft are both provided with fixing holes for use with the screw, and the rear side of the main shaft is provided with a movable opening for use with the connecting block.

[0009] Preferably, the number of the positioning plugs is four and they are evenly distributed on the surface of the movable sleeve, and the front and rear sides of the top of the movable sleeve are both provided with threaded holes for use with the screw.

[0010] Preferably, the inner ring of the pulley body is interference-connected with the outer ring of the bearing, and the number of the slots is four.

[0011] Preferably, a knob is fixedly connected to the top of the screw, and the surface of the knob is provided with anti-slip knurling.

[0012] Compared with the prior art, the beneficial effects of this invention are:

[0013] 1. By arranging the main shaft, movable sleeve, positioning block, sliding rod, sliding sleeve, connecting block, screw, pulley body, slot and oiling assembly, the two pulley bodies can be controlled to perform reversing operation by adjusting the use position of the positioning block. When the positioning block is inserted into the slot, the pulley body on the other side cannot be linked with the main shaft, thereby realizing reversing work, eliminating the need for manual belt replacement by workers, and improving safety;

[0014] 2. By setting a fixing hole, the movable sleeve can be positioned and fixed in cooperation with the screw, and by setting a movable opening, the connecting block can be conveniently moved left and right. By setting a positioning plug, one of the pulley bodies can be locked in cooperation with the slot so that it can be linked to the main shaft. By setting a threaded hole, the screw can be conveniently fixed or disassembled to the movable sleeve. By setting a bearing, the pulley body can be rotated freely. By setting a knob, it is convenient for the staff to turn the screw. When the pulley body rotates, the piston is driven to move by inertia. The movement of the piston transports the lubricating oil in the storage box to the bearing through the delivery pipe. Each time the pulley body rotates, a little is discharged, which is convenient for lubricating the bearing when it is working and prolonging its service life. By setting a counterweight block, the weight of the piston can be increased so that it can move by inertia. By setting an oil filling pipe, it is convenient for the staff to inject lubricating oil into the storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a reversing pulley provided by the present application;

[0016] Figure 2 This is a cross-sectional view of the main shaft of a reversing pulley provided by the present application;

[0017] Figure 3 This is a schematic diagram of a pulley body and bearing of a reversing pulley provided in this application;

[0018] Figure 4 This is a cross-sectional view of a storage box for a reversing pulley provided in this application.

[0019] In the figure: 1. Main shaft; 2. Moving sleeve; 3. Positioning plug; 4. Sliding rod; 5. Sliding sleeve; 6. Connecting block; 7. Screw; 8. Pulley body; 9. Slot; 10. Oiling assembly; 1001. Storage box; 1002. Tension spring; 1003. Piston; 1004. Delivery pipe; 1005. Oil filling pipe; 1006. Counterweight; 11. Knob; 12. Bearing. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings. Terms such as "upper", "above", "lower", "below", "first end", "second end", "one end", "the other end" used in this application to express spatial relative positions are used to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings for the purpose of ease of explanation. Terms of spatial relative position may be intended to include different orientations of the device in use or work other than the orientation shown in the figures. For example, if the device in the figure is turned over, the unit described as being "below" or "below" other units or features will be "above" other units or features. Therefore, the exemplary term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein are interpreted accordingly.

[0021] Furthermore, the terms "installed," "disposed," "provided with," "connected," "slidingly connected," "fixed," and "socketed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described in this application are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of this application.

[0023] See also Figure 1-4The present invention provides a technical solution: a reversing pulley, comprising a main shaft 1, a movable sleeve 2 being sleeved on the surface of the main shaft 1, a positioning plug-in block 3 being fixedly connected to the surface of the movable sleeve 2, a sliding rod 4 being fixedly connected between the two sides of the inner cavity of the main shaft 1, a sliding sleeve 5 being slidably connected to the surface of the sliding rod 4, a connecting block 6 being fixedly connected to the rear side of the sliding sleeve 5, the rear side of the connecting block 6 passing through the main shaft 1 and being fixedly connected to the movable sleeve 2, a screw 7 being threadedly connected to the front and rear sides of the top of the movable sleeve 2, a pulley body 8 being movably connected to both sides of the surface of the main shaft 1 through bearings 12, a slot 9 being opened on the opposite sides of the two pulley bodies 8, and a refueling assembly 10 being fixedly connected to the opposite sides of the two pulley bodies 8.

[0024] Embodiment 1: By setting the main shaft 1, movable sleeve 2, positioning block 3, slide rod 4, slide sleeve 5, connecting block 6, screw 7, pulley body 8, slot 9 and oiling assembly 10, the two pulley bodies 8 can be controlled to perform reversing operation by adjusting the use position of the positioning block 3, so that the positioning block 3 is inserted into the slot 9, and the pulley body 8 on the other side cannot be linked with the main shaft 1, thereby realizing reversing work, eliminating the need for staff to manually change the belt, and improving safety.

[0025] In one possible implementation, see Figure 1-4 , a reversing pulley, the front and rear sides of the top of the main shaft 1 are provided with fixing holes for use with the screw 7, the rear side of the main shaft 1 is provided with a movable opening for use with the connecting block 6, the number of positioning blocks 3 is four, and they are evenly distributed on the surface of the movable sleeve 2, the front and rear sides of the top of the movable sleeve 2 are provided with threaded holes for use with the screw 7, the inner ring of the pulley body 8 is interference connected with the outer ring of the bearing 12, the number of the slots 9 is four, the top of the screw 7 is fixedly connected with a knob 11, and the surface of the knob 11 is provided with anti-slip knurling.

[0026] Embodiment 2: By setting a fixing hole, the movable sleeve 2 can be positioned and fixed in cooperation with the screw 7, and by setting a movable opening, the connecting block 6 can be conveniently moved left and right. By setting a positioning plug-in block 3, it can be cooperated with the card slot 9 to lock one of the pulley bodies 8 so that it can be linked with the main shaft 1. By setting a threaded hole, the screw 7 can be conveniently fixed or disassembled to the movable sleeve 2. By setting a bearing 12, the pulley body 8 can be freely rotated. By setting a knob 11, it is convenient for the staff to turn the screw 7.

[0027] On the basis of Example 1, this embodiment describes the refueling assembly 10 in Example 1. The refueling assembly 10 includes a storage box 1001. The rear side of the inner cavity of the storage box 1001 is fixedly connected to a tension spring 1002. The front side of the tension spring 1002 is fixedly connected to a piston 1003. The front side of the storage box 1001 is connected to a delivery pipe 1004. The opposite sides of the two delivery pipes 1004 are fixedly connected to the pulley body 8. The front side of the piston 1003 is fixedly connected to a counterweight 1006. The opposite sides of the two storage boxes 1001 are connected to an oil filling pipe 1005. The oil filling pipe 1005 is away from the storage box. One end of the box 1001 is threadedly connected to a sealing cover. When the pulley body 8 rotates, the piston 1003 is driven to move by inertia. The movement of the piston 1003 transports the lubricating oil in the storage box 1001 to the bearing 12 through the delivery pipe 1004. Each time the pulley body 8 rotates, a little oil is discharged, which is convenient for lubricating the bearing 12 when it is working and improving its service life. By setting a counterweight block 1006, the weight of the piston 1003 can be increased so that it can move by inertia. By setting an oil filling pipe 1005, it is convenient for the staff to inject lubricating oil into the storage box 1001.

[0028] Working principle: When reversing is required, the staff turns the knob 11 to disengage the screw rod 7 from the fixed hole on one side through the knob 11, pushes the movable sleeve 2 to disengage the positioning plug 3 from the inner cavity of the card slot 9, and pushes the movable sleeve 2 to the pulley body 8 that needs to be reversed, so that the positioning plug 3 fixed on its surface enters the inside of its card slot 9, and then turns the knob 11 to make the screw rod 7 cooperate with the fixed hole to position the movable sleeve 2. At this time, the pulley body 8 locked by the positioning plug 3 is connected to the main shaft 1, and the unlocked pulley body 8 is connected to the main shaft 1 due to the presence of the bearing 12. Without rotating through the main shaft 1, the above operation makes it unnecessary for the staff to disassemble and assemble the belt when reversing the pulley body 8, thereby improving work efficiency and safety. When the pulley body 8 rotates, the inertia drives the piston 1003 to move, and the movement of the piston 1003 delivers the lubricating oil in the storage box 1001 to the bearing 12 through the delivery pipe 1004. When the pulley body 8 is not locked with the positioning plug 3, the main shaft 1 rotates and drives the bearing 12 to rotate. At this time, it can be lubricated to increase its service life.

[0029] Although 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.

Claims

1. A reversing pulley, characterized in that: The invention comprises a main shaft (1), a movable sleeve (2) is sleeved on the surface of the main shaft (1), a positioning plug (3) is fixedly connected to the surface of the movable sleeve (2), a sliding rod (4) is fixedly connected between the two sides of the inner cavity of the main shaft (1), a sliding sleeve (5) is slidably connected to the surface of the sliding rod (4), a connecting block (6) is fixedly connected to the rear side of the sliding sleeve (5), the rear side of the connecting block (6) passes through the main shaft (1) and is fixedly connected to the movable sleeve (2), a screw (7) is threadedly connected to the front side and the rear side of the top of the movable sleeve (2), both sides of the surface of the main shaft (1) are movably connected to the pulley body (8) through the bearing (12), a card slot (9) is opened on the opposite side of the two pulley bodies (8), and a refueling assembly (10) is fixedly connected to the opposite side of the two pulley bodies (8).

2. A reversing pulley according to claim 1, characterized in that: The refueling assembly (10) comprises a storage box (1001), a tension spring (1002) is fixedly connected to the rear side of the inner cavity of the storage box (1001), a piston (1003) is fixedly connected to the front side of the tension spring (1002), and a delivery pipe (1004) is connected to the front side of the storage box (1001), and opposite sides of the two delivery pipes (1004) are fixedly connected to the pulley body (8).

3. A reversing pulley according to claim 2, characterized in that: The front side of the piston (1003) is fixedly connected to a counterweight (1006), and opposite sides of the two storage boxes (1001) are connected to oil filling pipes (1005), and one end of the oil filling pipe (1005) away from the storage box (1001) is threadedly connected to a sealing cover.

4. A reversing pulley according to claim 1, characterized in that: The front and rear sides of the top of the main shaft (1) are both provided with fixing holes for use with the screw rod (7), and the rear side of the main shaft (1) is provided with a movable opening for use with the connecting block (6).

5. The reversing pulley according to claim 1, characterized in that: The number of the positioning plugs (3) is four and they are evenly distributed on the surface of the movable sleeve (2). The front and rear sides of the top of the movable sleeve (2) are both provided with threaded holes for use with the screw rod (7).

6. The reversing pulley according to claim 1, characterized in that: The inner ring of the pulley body (8) is interference-connected with the outer ring of the bearing (12), and the number of the clamping grooves (9) is four.

7. The reversing pulley according to claim 1, characterized in that: The top of the screw rod (7) is fixedly connected with a knob (11), and the surface of the knob (11) is provided with anti-slip knurling.

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