Side-opening pulley

Abstract

The utility model discloses a side-opening pulley, which belongs to the field of hoisting equipment, and is used for solving the problem that the existing pulley is lower in cable laying efficiency, the side-opening pulley comprises a wheel carrier, a pulley main body, a rotating plate and a cam mechanism, and the side surface of the pulley main body and the wheel carrier form a cable laying port for placing a cable; the rotating plate is used for opening or closing the cable laying port through rotation, and a shaft hole is formed in the rotating plate; the cam mechanism comprises a cam and a fixing part, the cam is cylindrical, a spiral groove is formed in the outer side of the cam, the cam is rotatably arranged in the shaft hole, the fixing part is fixedly connected with the rotating plate and extends into the shaft hole to be matched with the spiral groove, and the cam corresponds to the inserting hole in position when the cable laying opening is closed by the rotating plate, so that when the cam rotates, the inserting hole is inserted into the inserting hole. And the axial movement can be realized in the shaft hole so as to realize the insertion or separation with the insertion hole to lock or unlock the closed state of the cable laying port. The side-opening pulley does not need to pull a pin shaft like the prior art, is more convenient to operate, and is beneficial to improving the cable laying efficiency in the hoisting process.

Description

Technical Field

[0001] The utility model relates to the field of hoisting equipment, in particular to a side-opening pulley. Background Art

[0002] As an efficient lifting pulley system, the side-opening pulley is mainly composed of a wheel frame, a pulley and a movable flap. A cable release port is designed between the wheel frame and the pulley, and the flap can rotate around the wheel frame to open and close the cable release port. This design allows the cable to pass through the cable release port on the side of the pulley conveniently, and the flap is limited between the pulley and the wheel frame. However, in the existing design, the flap usually relies on a pin shaft to be fixedly connected to the wheel frame when closing the cable release port, which has the following defects and shortcomings:

[0003] The pin shaft is heavy and needs to be pulled out and inserted when releasing the cable, which is not convenient to operate. This greatly reduces the efficiency of releasing the cable during the lifting process.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a side-opening pulley, which at least solves the technical problem of how to improve the cable laying efficiency.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] A side-opening pulley, comprising:

[0010] A wheel frame, wherein the wheel frame is provided with a plug hole;

[0011] A pulley body, the pulley body is rotatably connected to the wheel frame via a rotating shaft, and a side surface and the wheel frame form a cable release port for inserting a cable;

[0012] A rotating plate, rotatably connected to the rotating shaft and fixed relative to the wheel frame in the axial direction of the rotating shaft, used to open or close the cable release port by rotating, and an axial hole is provided on the rotating plate;

[0013] A cam mechanism, the cam mechanism comprises a cam, a fixing part and an operating device, the cam is cylindrical and has a spiral groove on the outside, the cam is rotatably arranged in the shaft hole, the operating device is connected to the cam and is used to control the rotation of the cam, the fixing part is fixedly connected to the rotating plate and extends into the shaft hole to cooperate with the spiral groove, when the rotating plate closes the cable release port, the cam corresponds to the position of the socket, so that when the cam rotates, it can realize axial movement in the shaft hole, and then realize insertion or disengagement from the socket to lock or unlock the closed state of the cable release port.

[0014] In some embodiments, the operating device includes a handle connected to the cam for controlling the rotation of the cam.

[0015] In some embodiments, a rotation groove is provided at one end of the cam facing away from the wheel frame, one end of the handle is located in the rotation groove and is rotationally connected to the inner wall of the rotation groove via a pin shaft.

[0016] In some embodiments, the fixing member is a bolt, the rotating plate is provided with a bolt hole connected to the shaft hole, the bolt passes through the bolt hole and is fixed, and the head of the bolt extends into the interior of the spiral groove.

[0017] In some embodiments, a sleeve is provided on the rotating plate, the sleeve extends to a side away from the wheel frame and is provided with the shaft hole.

[0018] In some embodiments, the cam mechanism further includes an end cover, which is disposed at one end of the shaft hole to close the shaft hole, and the end cover is provided with a clearance hole matched with the cam.

[0019] In some embodiments, a limiting member is provided at the end of the rotating shaft, the limiting member is fixedly connected to the rotating shaft, and the rotating plate is limited between the limiting member and the pulley body in the axial direction of the rotating shaft.

[0020] In some embodiments, the wheel frame includes a first partition and a second partition that are spaced apart and fixedly connected by a connecting piece, the rotating shaft is connected to the first partition, the pulley body is located between the first partition and the second partition, the second partition is provided with the jack and forms the cable releasing port together with the side of the pulley body, and the rotating plate is located on the side of the pulley body away from the first partition.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the side-opening pulley provided by the utility model has the following beneficial effects:

[0023] When the side-opening pulley is working, firstly, the rotating plate is rotated around the rotating shaft to open the cable release port, so that the cable can be put in from the cable release port, and then the rotating plate is rotated to close the cable release port. At this time, the cam is relative to the insertion hole, and then the cam is controlled to rotate. Due to the cooperation of the spiral groove and the fixing part, the cam can move axially in the shaft hole when rotating, and then insert the insertion hole to prevent the rotating plate from rotating. At the same time, since the rotating plate is fixed relative to the wheel frame in the axial direction of the rotating shaft, the rotating plate and the wheel frame are relatively fixed at this time, and the cable release port is locked in a closed state; when the cable release port needs to be opened, it is only necessary to control the cam to rotate in the opposite direction and disengage the insertion hole, and the rotating plate can restore the rotatable state to unlock the closed state of the cable release port. It can be seen that the side-opening pulley of the utility model controls the rotatable state of the rotating plate relative to the wheel frame through the cam mechanism. The specific operation only needs to control the cam to rotate when the insertion hole and the cam are relative. There is no need to pull out the pin shaft like the prior art, and the operation is more convenient, which is conducive to improving the cable release efficiency during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional view of the side-opening pulley in the embodiment when the cable-releasing port is in a closed state.

[0025] Figure 2 It is a three-dimensional view of the side-opening pulley in the embodiment when the cable-releasing port is in an open state.

[0026] Figure 3 It is a schematic diagram of the cam mechanism in the embodiment when the cable release port is in a closed state.

[0027] Figure 4 It is a side view of the side-opening pulley in the embodiment.

[0028] Figure numerals: wheel frame 1, pulley body 2, rotating plate 3, cam mechanism 4, rotating shaft 5, socket 10, first partition plate 11, second partition plate 12, cable release port 20, shaft hole 30, sleeve 31, cam 41, fixing part 42, operating device 43, end cover 44, shaft cover 50, spiral groove 400, handle 401, rotating groove 402, pin shaft 403. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] The flap of the existing side-opening pulley usually relies on a pin shaft to be fixedly connected to the wheel frame when closing the cable-releasing opening. The pin shaft is heavy and needs to be plugged in and out when releasing the cable. The operation is not convenient enough, which greatly reduces the cable-releasing efficiency during the lifting process.

[0031] In order to solve the above technical problems, this embodiment provides a side pulley, please refer to Figures 1 to 4 As shown, Figure 1 This is a three-dimensional diagram of the side-opening pulley in the embodiment when the cable release port is in a closed state. Figure 1 This is a three-dimensional diagram of the side-opening pulley in the embodiment when the cable release port is in an open state. Figure 3 is a schematic diagram of the cam mechanism in the embodiment when the cable release port is in a closed state, Figure 4 It is a side view of the side-opening pulley in the embodiment.

[0032] The side-opening pulley of this embodiment includes: a wheel frame 1, a pulley body 2, a rotating plate 3 and a cam mechanism 4.

[0033] like Figure 3 As shown, the wheel frame 1 is provided with a plug hole 10 , and the plug hole 10 is used to cooperate with the cam mechanism 4 .

[0034] like Figure 2 and 4 As shown, the pulley body 2 is rotatably connected to the wheel frame 1 via a rotating shaft 5, and the side surface and the wheel frame 1 form a cable release port 20 for inserting the cable.

[0035] like Figure 2 and 3 As shown, the rotating plate 3 is rotatably connected to the rotating shaft 5 and is fixed relative to the wheel frame 1 in the axial direction of the rotating shaft 5, and is used to open or close the cable release port 20 by rotation. The rotating plate 3 is provided with an axial hole 30, and the axial hole 30 is used to install the cam mechanism 4.

[0036] like Figure 1 and 2 As shown, the cam mechanism 4 includes a cam 41, a fixing member 42 and an operating device 43. The cam 41 is cylindrical and has a spiral groove 400 on the outer side. The cam 41 is rotatably arranged in the shaft hole 30. The operating device 43 is connected to the cam 41 and is used to control the rotation of the cam 41. The fixing member 42 is fixedly connected to the rotating plate 3 and extends into the shaft hole 30 to cooperate with the spiral groove 400. Figure 3 As shown, when the rotating plate 3 closes the cable release port 20, the cam 41 corresponds to the position of the insertion hole 10, so that when the cam 41 rotates, it can achieve axial movement in the shaft hole 30, and then achieve insertion or disengagement from the insertion hole 10 to lock or unlock the closed state of the cable release port 20.

[0037] It should be noted that, in order to facilitate the description of the structure of the cam mechanism 4, Figure 2 The cam mechanism 4 is an exploded view, but in actual operation, the cam mechanism 4 is also installed on the shaft hole 30 when the cable release port 20 is in an open state.

[0038] When the side-opening pulley of the above technical solution is working, the rotating plate 3 is first rotated around the rotating shaft 5 to open the cable release port 20, so that the cable can be inserted from the cable release port 20, and then the rotating plate 3 is rotated to close the cable release port 20. At this time, the cam 41 is relative to the insertion hole 10, and then the cam 41 is controlled to rotate. Due to the cooperation between the spiral groove 400 and the fixing member 42, the cam 41 can move axially in the shaft hole 30 during rotation, and then insert into the insertion hole 10 to prevent the rotating plate 3 from rotating. At the same time, since the rotating plate 3 is fixed relative to the wheel frame 1 in the axial direction of the rotating shaft 5, the rotating plate 3 and the wheel frame 1 are relatively fixed at this time, and the cable release port 20 is locked in the closed state; when the cable release port 20 needs to be opened, it is only necessary to control the cam 41 to rotate in the opposite direction to disengage from the insertion hole 10, and the rotating plate 3 can resume the rotatable state to unlock the closed state of the cable release port 20. It can be seen that the side-opening pulley of the above technical solution controls the rotatable state of the rotating plate 3 relative to the wheel frame 1 through the cam mechanism 4. The specific operation only needs to control the rotation of the cam 41 when the socket 10 and the cam 41 are relative to each other. There is no need to pull out and plug the pin shaft like the prior art. The operation is more convenient and is conducive to improving the cable releasing efficiency during the lifting process.

[0039] In one embodiment of the above-mentioned control cam 41 rotation, refer to Figure 2 and Figure 3 As shown, the operating device 43 includes a handle 401 , which is connected to the cam 41 and is used to control the rotation of the cam 41 . The operator manually controls the rotation of the cam 41 through the handle 401 .

[0040] For example, see Figure 2 and Figure 3 As shown, the handle 401 is connected to the cam 41 in the following manner: a rotation groove 402 is provided at one end of the cam 41 facing away from the wheel frame 1, one end of the handle 401 is located in the rotation groove 402, and is rotationally connected to the inner wall of the rotation groove 402 through a pin shaft 403, so that the handle 401 can rotate around the pin shaft 403, thereby increasing the freedom of movement of the handle 401 and making it more convenient to control the rotation of the cam 41.

[0041] In another embodiment of the above-mentioned control cam 41 rotation (not shown), the operating device 43 is a driving mechanism, such as a motor driving mechanism, which is installed on the rotating plate 3 and is connected to the cam 41 for driving the cam 41 to rotate, thereby realizing the rotation of the cam 41 by electric control.

[0042] In one embodiment of the fixing member 42, see Figure 2 As shown, the fixing member 42 is a bolt, and the rotating plate 3 is provided with a bolt hole connected to the shaft hole 30. The bolt passes through the bolt hole and is fixed, and the head extends into the spiral groove 400. Since the bolt has the advantage of convenient material selection, the manufacturing difficulty and cost of the cam mechanism 4 can be reduced.

[0043] It is understandable that the fixing member 42 may also be a pin fixed on the rotating plate 3 and extending into the shaft hole 30 to cooperate with the spiral groove 400 .

[0044] In one embodiment of the above-mentioned rotating plate 3 having the shaft hole 30, see Figure 1 As shown, a sleeve 31 is provided on the rotating plate 3, and the sleeve 31 can be fixed on the rotating plate 3 by an integral molding method. The sleeve 31 extends to the side away from the wheel frame 1 and is provided with an axial hole 30. In this way, the sleeve 31 can increase the length of the axial hole 30 while keeping the thickness of the rotating plate 3 unchanged, thereby providing sufficient space for the installation of the cam 41 and reducing the weight of the rotating plate 3.

[0045] In order to protect the cam 41 in the shaft hole 30 and prevent dust and other debris from entering the spiral groove 400 and the shaft hole 30, refer to Figure 1 and Figure 2 As shown, the cam mechanism 4 also includes an end cover 44, which is arranged at one end of the shaft hole 30 to close the shaft hole 30, and the end cover 44 is provided with a clearance hole adapted to the cam 41, wherein the end cover 44 can be fixed to one end of the shaft hole 30 by bolts, such as fixed to the end of the above-mentioned sleeve 31 away from the wheel frame 1.

[0046] The fixing of the rotating plate 3 relative to the wheel frame 1 in the axial direction of the rotating shaft 5 can be achieved by a connection method in which the existing rotating member and the rotating shaft 5 are relatively fixed in the axial direction and can rotate relatively in the circumferential direction.

[0047] In one embodiment of the above-mentioned rotating plate 3 being fixed relative to the wheel frame 1 in the axial direction of the rotating shaft 5, see Figure 1 and Figure 4 As shown, a limit member is provided at the end of the rotating shaft 5, and the limit member is fixedly connected to the rotating shaft 5. Exemplarily, the limit member is a shaft cover 50 connected to the end of the rotating shaft 5 by bolts, and the rotating plate 3 is limited between the shaft cover 50 and the pulley body 2 in the axial direction of the rotating shaft 5.

[0048] In one embodiment of the above wheel frame 1, refer to Figure 2 As shown, the wheel frame 1 includes a first partition plate 11 and a second partition plate 12 which are spaced apart and fixedly connected by a connecting piece, the rotating shaft 5 is connected to the first partition plate 11, the pulley body 2 is located between the first partition plate 11 and the second partition plate 12, the second partition plate 12 is provided with a plug hole 10, and forms a cable releasing port 20 with the side of the pulley body 2, and the rotating plate 3 is located on the side of the pulley body 2 away from the first partition plate 11.

[0049] 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 the 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 side-opening pulley, characterized in that: include: A wheel frame, wherein the wheel frame is provided with a plug hole; A pulley body, the pulley body is rotatably connected to the wheel frame via a rotating shaft, and a side surface and the wheel frame form a cable release port for inserting a cable; A rotating plate, rotatably connected to the rotating shaft and fixed relative to the wheel frame in the axial direction of the rotating shaft, used to open or close the cable release port by rotating, and an axial hole is provided on the rotating plate; A cam mechanism, the cam mechanism comprises a cam, a fixing part and an operating device, the cam is cylindrical and has a spiral groove on the outside, the cam is rotatably arranged in the shaft hole, the operating device is connected to the cam and is used to control the rotation of the cam, the fixing part is fixedly connected to the rotating plate and extends into the shaft hole to cooperate with the spiral groove, when the rotating plate closes the cable release port, the cam corresponds to the position of the socket, so that when the cam rotates, it can realize axial movement in the shaft hole, and then realize insertion or disengagement from the socket to lock or unlock the closed state of the cable release port.

2. The side-opening pulley according to claim 1, characterized in that: The operating device comprises a handle, and the handle is connected to the cam and is used for controlling the rotation of the cam.

3. The side-opening pulley according to claim 2, characterized in that: A rotation groove is provided at one end of the cam which faces away from the wheel frame, and one end of the handle is located in the rotation groove and is rotationally connected to the inner wall of the rotation groove through a pin shaft.

4. The side-opening pulley according to claim 1, characterized in that: The fixing member is a bolt, the rotating plate is provided with a bolt hole connected with the shaft hole, the bolt passes through the bolt hole and is fixed, and the head of the bolt extends into the interior of the spiral groove.

5. The side-opening pulley according to claim 1, characterized in that: The rotating plate is provided with a sleeve, the sleeve extends to a side away from the wheel frame and is provided with the shaft hole.

6. The side-opening pulley according to claim 1, characterized in that: The cam mechanism also includes an end cover, which is arranged at one end of the shaft hole to close the shaft hole, and the end cover is provided with a clearance hole matched with the cam.

7. The side-opening pulley according to claim 1, characterized in that: A limiting piece is provided at the end of the rotating shaft, and the limiting piece is fixedly connected to the rotating shaft. The rotating plate is limited between the limiting piece and the pulley body in the axial direction of the rotating shaft.

8. The side-opening pulley according to claim 1, characterized in that: The wheel frame includes a first partition plate and a second partition plate which are spaced apart and fixedly connected by a connecting piece, the rotating shaft is connected to the first partition plate, the pulley body is located between the first partition plate and the second partition plate, the second partition plate is provided with the jack and forms the cable releasing port together with the side surface of the pulley body, and the rotating plate is located on the side of the pulley body away from the first partition plate.

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