Pulley block structure convenient to combine

Abstract

The utility model discloses a pulley block structure convenient to combine, which comprises two placing frames, the two placing frames are internally provided with combination components, the combination components comprise placing grooves formed in the placing frames, a plurality of limiting blocks are placed in the placing grooves, the bottoms of the plurality of limiting blocks are fixedly connected with pulley bodies, and the pulley bodies are fixedly connected with the pulley bodies. A limiting plate covers the outer portion of the containing frame, a plurality of bolts are connected between the limiting plate and the containing frame in a threaded mode, the limiting plate is matched with the containing frame to limit a limiting block, the inner walls of the two sides of the containing frame are rotationally connected with the same two-way lead screw, and the two ends of the two-way lead screw are each sleeved with an extrusion block in a threaded mode. According to the combined pulley block, the combined assembly is arranged, different numbers of pulleys can be combined at will according to needs, and therefore it is guaranteed that the pulley block can adapt to the use requirements of different devices, and the adaptability of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to a pulley block structure which is convenient to combine. Background Art

[0002] The key load-bearing component of a heavy-duty crane is the pulley block arranged in the pulley box. Since the load-bearing component needs to bear a large pressure, multiple pulleys are often used in combination.

[0003] After searching, the utility model with Chinese patent publication number CN205136536U discloses a combined pulley block, which belongs to the field of crane components. It provides a combined pulley block that shortens the time required for replacing the pulley block, including a plurality of pulley pieces arranged in parallel, each pulley piece is sleeved on a bearing, and a positioning ring is arranged between two adjacent pulley pieces. It also includes a combined sleeve, and all bearings and all positioning rings are sleeved on the combined sleeve and are coaxially arranged with the combined sleeve.

[0004] The above-mentioned device realizes the connection of multiple pulleys by setting a combination sleeve and an axis core. Since the length of the axis core is fixed, only a fixed number of pulleys can be installed. If the number is insufficient, displacement will occur during use. Therefore, if it is applied in other scenarios, it is necessary to replace the axis core of the corresponding specification. Therefore, a pulley group structure that is easy to combine is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a pulley block structure that is easy to assemble, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulley block structure that is easy to combine, including two placement frames, characterized in that: a combination component is installed inside the two placement frames, the combination component includes a placement groove opened inside the placement frame, a plurality of limit blocks are placed inside the placement groove, a pulley body is fixedly connected to the bottom of the plurality of limit blocks, the outside of the placement frame is covered with a limit plate, a plurality of bolts are threadedly connected between the limit plate and the placement frame, and the limit plate cooperates with the placement frame to limit the limit block.

[0007] As a further preferred embodiment of the present technical solution, the inner walls on both sides of the placement frame are rotatably connected with the same bidirectional screw, and both ends of the bidirectional screw are threadedly sleeved with an extrusion block, the two extrusion blocks are both fitted with the top wall of the placement groove, and the two extrusion blocks can contact the limit block.

[0008] As a further preferred embodiment of the present technical solution, a worm gear is rotatably connected to the outer wall of one side of the placement frame, and the worm gear and one end of the bidirectional lead screw are coaxially fixed. Two extension plates are fixedly connected to the outer wall of one side of the placement frame, and the same worm is rotatably connected between the two extension plates, and the worm gear can form a transmission fit with the worm. A motor is fixedly installed on the top outer wall of one of the extension plates, and the motor shaft and one end of the worm are coaxially fixed.

[0009] Different numbers of pulleys can be combined at will according to needs, so as to ensure that the pulley group can adapt to the use requirements of different equipment, which is beneficial to increase the adaptability of the device. The limit blocks on the top of multiple pulley bodies are placed in the placement groove, and then the limit plate is covered on the outside of the placement frame, and the two are connected with bolts. At this time, one end of the multiple pulley bodies will be restricted, and then the motor on the top of the extension plate is started. The motor can drive the worm to rotate between the two extension plates, and the worm drives the worm wheel to rotate outside the placement frame. The worm wheel can drive the bidirectional lead screw to rotate, and the two restricted extrusion blocks will be driven by the bidirectional lead screw to approach each other, and then the two extrusion blocks can squeeze the limit blocks on the top of the multiple pulley bodies together to ensure that the multiple pulley bodies form a whole.

[0010] As a further preferred embodiment of the technical solution, the two extrusion blocks close to each other are installed with the same reinforcement component, and the reinforcement component includes two extension blocks whose outer walls at one end of the two extrusion blocks are fixedly connected, and one side outer wall of one of the extension blocks is fixedly connected with a screw, and the screw is slidably inserted in the other extension block, and the screw threaded sleeve is provided with a connecting sleeve.

[0011] As a further preferred embodiment of the present technical solution, a hook is fixedly connected to the middle of the outer walls of the two placement frames at one end away from each other.

[0012] As a further preferred embodiment of the present technical solution, the lead angle of the threads at both ends of the two bidirectional screw rods is smaller than the equivalent friction angle.

[0013] As a further preferred embodiment of the present technical solution, the two placement frames are arranged in a step-shaped configuration as a whole.

[0014] The utility model provides a pulley block structure that is easy to assemble, and has the following beneficial effects:

[0015] The utility model can arbitrarily combine different numbers of pulleys according to needs by setting a combination component, so as to ensure that the pulley group can adapt to the use requirements of different equipment, which is beneficial to increasing the adaptability of the device. The limit blocks on the top of the multiple pulley bodies are placed in the placement groove, and then the limit plate is covered on the outside of the placement frame, and the two are connected with bolts. At this time, one end of the multiple pulley bodies will be restricted, and then the motor on the top of the extension plate is started, the motor can drive the worm to rotate between the two extension plates, the worm drives the worm wheel to rotate outside the placement frame, and the worm wheel can drive the bidirectional lead screw to rotate, and the two restricted extrusion blocks will be driven by the bidirectional lead screw to approach each other, and then the two extrusion blocks can squeeze the limit blocks on the top of the multiple pulley bodies together to ensure that the multiple pulley bodies form a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0018] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0020] In the figure: 1. placement frame; 2. hook; 3. pulley body; 4. combination assembly; 5. reinforcement assembly; 401. placement slot; 402. limit plate; 403. bolt; 404. limit block; 405. bidirectional screw; 406. extrusion block; 407. worm gear; 408. extension plate; 409. worm; 410. motor; 501. extension block; 502. screw; 503. connecting sleeve. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides a technical solution: Figure 2 and Figure 3As shown, in the present embodiment, a pulley block structure that is convenient to combine includes two placement frames 1, and is characterized in that: a combination component 4 is installed inside the two placement frames 1, and the combination component 4 includes a placement groove 401 opened inside the placement frame 1, and a plurality of limit blocks 404 are placed inside the placement groove 401, and a pulley body 3 is fixedly connected to the bottom of the plurality of limit blocks 404, and the outside of the placement frame 1 is covered with a limit plate 402, and a plurality of bolts 403 are threadedly connected between the limit plate 402 and the placement frame 1, and the limit plate 402 cooperates with the placement frame 1 to limit the limit block 404.

[0023] The inner walls on both sides of the placement frame 1 are rotatably connected with the same bidirectional screw rod 405, and both ends of the bidirectional screw rod 405 are threadedly sleeved with an extrusion block 406, and the two extrusion blocks 406 are both in contact with the top wall of the placement groove 401, and the two extrusion blocks 406 can contact the limit block 404.

[0024] A worm gear 407 is rotatably connected to the outer wall of one side of the placement frame 1, and the worm gear 407 and one end of the bidirectional lead screw 405 are coaxially fixed. Two extension plates 408 are fixedly connected to the outer wall of one side of the placement frame 1, and a same worm 409 is rotatably connected between the two extension plates 408, and the worm gear 407 can form a transmission fit with the worm 409. A motor 410 is fixedly installed on the top outer wall of an extension plate 408 at the top, and the rotating shaft of the motor 410 and one end of the worm 409 are coaxially fixed.

[0025] Put the limiting blocks 404 on the top of the multiple pulley bodies 3 into the placement groove 401, then cover the limiting plate 402 on the outside of the placement frame 1, and connect the two with bolts 403, at this time, one end of the multiple pulley bodies 3 will be restricted, then start the motor 410 on the top of the extension plate 408, the motor 410 can drive the worm 409 to rotate between the two extension plates 408, the worm 409 drives the worm wheel 407 to rotate outside the placement frame 1, the worm wheel 407 can drive the bidirectional screw rod 405 to rotate, and the two restricted extrusion blocks 406 will be driven by the bidirectional screw rod 405 to approach each other, and then the two extrusion blocks 406 can squeeze the limiting blocks 404 on the top of the multiple pulley bodies 3 together to ensure that the multiple pulley bodies 3 form a whole.

[0026] like Figure 1 and Figure 4 As shown, two extrusion blocks 406 close to each other are installed with the same reinforcement component 5, and the reinforcement component 5 includes two extension blocks 501 fixedly connected to the outer walls of one end of the two extrusion blocks 406, and a screw 502 is fixedly connected to the outer wall of one side of one extension block 501, and the screw 502 is slidably inserted into the other extension block 501, and the screw 502 is threadedly sleeved with a connecting sleeve 503.

[0027] The screw rod 502 at one end of the extension block 501 outside the extrusion block 406 will also move synchronously with it, and then move the connecting sleeve 503 to make it close to the other extension block 501 until the two are tightly attached together, which can reinforce the two extrusion blocks 406, thereby avoiding the state of the multiple pulley bodies 3 being restricted and becoming more stable.

[0028] like Figure 1 and Figure 2 As shown, a hook 2 is fixedly connected to the middle of the outer wall of the two placement frames 1 at one end away from each other, and the connection between the device and the external equipment can be achieved through the hook 2.

[0029] like Figure 1 As shown, the thread lead angles of the threads at both ends of the two bidirectional screw rods 405 are smaller than the equivalent friction angle, so that they have a self-locking property, thereby ensuring that the position of the extrusion block 406 connected thereto will not change arbitrarily.

[0030] like Figure 1 and Figure 2 As shown, the two placement frames 1 are arranged in a stepped shape as a whole.

[0031] The utility model provides a pulley block structure that is convenient to assemble, and the specific working principle is as follows:

[0032] When the device is working, first put the limit block 404 on the top of the multiple pulley bodies 3 into the placement groove 401, then cover the limit plate 402 on the outside of the placement frame 1, and connect the two with the bolt 403. At this time, one end of the multiple pulley bodies 3 will be restricted, and then start the motor 410 on the top of the extension plate 408. The motor 410 can drive the worm 409 to rotate between the two extension plates 408, and the worm 409 drives the worm wheel 407 to rotate outside the placement frame 1. The worm wheel 407 can drive the bidirectional screw rod 405 to rotate, and the two restricted extrusions The blocks 406 will be driven by the bidirectional screw rod 405 to approach each other, and then the two extrusion blocks 406 can squeeze the limit blocks 404 on the top of the multiple pulley bodies 3 together to ensure that the multiple pulley bodies 3 form a whole. The screw rod 502 at one end of the extension block 501 outside the extrusion block 406 will also move synchronously with it, and then the connecting sleeve 503 is moved to make it approach the other extension block 501 until the two are tightly attached together, which can play the effect of reinforcing the two extrusion blocks 406, thereby avoiding the state of the multiple pulley bodies 3 being restricted to be more stable.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulley block structure that is easy to assemble, comprising two placement frames (1), characterized in that: The two placement frames (1) are both internally installed with a combination component (4), the combination component (4) comprising a placement slot (401) opened inside the placement frame (1), a plurality of limit blocks (404) being placed inside the placement slot (401), a pulley body (3) being fixedly connected to the bottom of the plurality of limit blocks (404), the placement frame (1) being externally covered with a limit plate (402), a plurality of bolts (403) being threadedly connected between the limit plate (402) and the placement frame (1), and the limit plate (402) being able to limit the limit blocks (404) in cooperation with the placement frame (1).

2. A pulley block structure that is easy to assemble according to claim 1, characterized in that: The inner walls on both sides of the placement frame (1) are rotatably connected to a same bidirectional screw rod (405), and both ends of the bidirectional screw rod (405) are threadedly sleeved with an extrusion block (406), and the two extrusion blocks (406) are both in contact with the top wall of the placement groove (401), and the two extrusion blocks (406) can contact the limit block (404).

3. The pulley block structure that is easy to assemble according to claim 1 is characterized in that: A worm wheel (407) is rotatably connected to the outer wall of one side of the placement frame (1), and the worm wheel (407) and one end of the bidirectional lead screw (405) are coaxially fixed. Two extension plates (408) are fixedly connected to the outer wall of one side of the placement frame (1), and a worm (409) is rotatably connected between the two extension plates (408), and the worm wheel (407) can form a transmission match with the worm (409). A motor (410) is fixedly installed on the top outer wall of the top extension plate (408), and the motor (410) shaft and one end of the worm (409) are coaxially fixed.

4. A pulley block structure that is easy to assemble according to claim 2, characterized in that: The two extrusion blocks (406) close to each other are installed with the same reinforcement component (5), and the reinforcement component (5) comprises two extension blocks (501) whose outer walls at one end of the two extrusion blocks (406) are fixedly connected, and a screw rod (502) is fixedly connected to the outer wall of one side of one of the extension blocks (501), and the screw rod (502) is slidably inserted into the other extension block (501), and the screw rod (502) is threadedly sleeved with a connecting sleeve (503).

5. The pulley block structure that is easy to assemble according to claim 1 is characterized in that: A hook (2) is fixedly connected to the middle of the outer walls of the two placement frames (1) at one end away from each other.

6. The pulley block structure that is easy to assemble according to claim 3 is characterized in that: The lead angles of the threads at both ends of the two bidirectional screw rods (405) are smaller than the equivalent friction angle.

7. The pulley block structure that is easy to assemble according to claim 1 is characterized in that: The two placement frames (1) are arranged in a stepped shape as a whole.

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