Chain guide of elevator

Abstract

The utility model provides a chain guide of an elevator, and belongs to the technical field of elevators. The guide chain structure solves the technical problem that an existing guide chain structure is prone to vibration in the operation process. The chain guide of the elevator comprises a left shell and a right shell, a semicircular chain guide channel, a first inlet and outlet and a second inlet and outlet are formed between the left shell and the right shell, the first inlet and outlet and the second inlet and outlet are communicated with the two ends of the chain guide channel respectively, and the first inlet and outlet comprises a first transverse channel and a first longitudinal channel which are crossed. The second inlet and outlet comprises a second transverse channel and a second longitudinal channel which are crossed, one side of the first transverse channel and one side of the second transverse channel are both linearly connected with the guide chain channel, a first guide groove is further formed in the lower end of one side of the second transverse channel, and a second guide groove is further formed in the lower end of one side of the second longitudinal channel; the first guide groove and the second guide groove are sequentially enlarged from top to bottom. According to the utility model, vibration can be reduced and stability of whole machine operation can be enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of hoist technology, and specifically refers to a chain guide for a hoist. Background Technology

[0002] The hoist's chain conductor structure includes a guide frame, sprockets, chain, and guide plate. The sprockets are installed inside the guide frame, which is fixed to the guide plate. The guide plate has an inlet and an outlet. The chain enters the guide frame through the inlet, connects with the sprocket drive, and exits through the outlet.

[0003] Existing technologies, such as the chain lifting device and electric chain hoist with patent number 2024117027486, include an outer contour limiting device located along the chain's rotation path on the side of the chain away from the sprocket. This outer contour limiting device restricts the outer trajectory of the chain's rotation. A housing is fitted over the outer contour limiting device to further limit its movement. In this structure, the outer contour limiting device and the housing together form a guide frame and a chain guide plate. However, this structure is prone to vibration and wear during operation, affecting the stable operation of the entire machine. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a chain guide for a hoist. The technical problem this invention aims to solve is how to reduce vibration, decrease wear, and improve stability in the chain guide.

[0005] The objective of this utility model can be achieved through the following technical solution: A chain guide for a hoist includes a left shell and a right shell. A semi-circular chain guide channel is formed between the left shell and the right shell, and a first inlet and a second inlet are respectively connected to the two ends of the chain guide channel. The first inlet and the second inlet include a first transverse channel and a first longitudinal channel that are arranged in a cross shape. The second inlet and the second inlet and the second inlet include a second transverse channel and a second longitudinal channel that are arranged in a cross shape. One side of the first transverse channel and the second transverse channel are both directly connected to the chain guide channel. A first guide groove is also provided at the lower end of one side of the second transverse channel, and a second guide groove is also provided at the lower end of one side of the second longitudinal channel. The first guide groove and the second guide groove increase in size from top to bottom.

[0006] The two ends of the chain guide channel are connected to the first and second inlets and outlets at a cross intersection, so that the chain forms a cross-shaped four-way limit, reducing the friction area of ​​the contact surface between the chain and the left and right shells. The gradually increasing size of the first and second guide grooves helps the chain move smoothly, reduces friction, reduces vibration, disperses stress, and reduces local wear.

[0007] Furthermore, the first guide groove and the second guide groove are arc-shaped, and the first guide groove is connected to the chain guide channel through the second transverse channel. The arc-shaped first guide groove and the second guide groove adopt a gradually expanding structure, which effectively disperses the stress concentration points of the chain, reduces local pressure, and allows the chain to enter the chain guide channel more smoothly and stably.

[0008] Furthermore, the first guide groove and the second guide groove are perpendicular.

[0009] Furthermore, the left and right shells are located below the second inlet and outlet, with a left guide chain shell and a right guide chain shell protruding downwards respectively. The first guide groove is formed inside the right guide chain shell, and the second guide groove is formed by the left and right guide chain shells together.

[0010] Furthermore, there are two positioning posts protruding axially from the upper end of the right housing.

[0011] Furthermore, a guide block is formed on the right shell. The guide block has two parallel first guide surfaces and second guide surfaces. The first guide surface is one side of the first transverse channel, and the second guide surface is one side of the second transverse channel.

[0012] Furthermore, the first guide surface and the second guide surface are smoothly connected by an arc surface.

[0013] Furthermore, the chain guide also includes a sprocket with six teeth. An elliptical tooth socket is located between two adjacent teeth, and a strip-shaped tooth socket connects two adjacent elliptical tooth sockets in the middle of each tooth. The distance between the first guide surface and the second guide surface is greater than or equal to the minimum distance between two relatively positioned strip-shaped tooth sockets. The combination of the elliptical and strip-shaped tooth sockets increases the meshing contact area between the chain and the sprocket, reducing the load per unit area, increasing the load capacity, and improving the load-bearing speed. The fact that the distance between the first and second guide surfaces is greater than or equal to the minimum distance between two relatively positioned strip-shaped tooth sockets allows the chain to enter the chain guide channel more smoothly, reducing vibration and improving stability.

[0014] Furthermore, the gear teeth include a pair of symmetrically arranged tooth blocks, with a strip-shaped tooth socket circumferentially penetrating between the pair of tooth blocks. The inner side of the tooth block has two symmetrical grooves, with the bottom surface of the groove higher than the bottom surface of the strip-shaped tooth socket. The two pairs of grooves form an elliptical tooth socket, and the bottom of the elliptical tooth socket is recessed downward with an axially penetrating arc-shaped groove.

[0015] Furthermore, the upper end of the left housing has a mounting groove.

[0016] Compared with existing technologies, the technical effects of this utility model are as follows: 1. The two ends of the chain guide channel are connected to the first and second inlets / outlets, which intersect at a cross shape, forming a cross-shaped four-way limiting mechanism for the chain. This reduces the friction area between the chain and the contact surfaces of the left and right housings. The gradually increasing size of the first and second guide grooves facilitates smooth chain movement, reduces friction and vibration, disperses stress, and reduces localized wear. 2. The combination of elliptical toothed recesses and strip-shaped toothed recesses increases the meshing contact area between the chain and the sprocket, reduces the load per unit area, increases the load capacity, and improves the load-bearing speed. The distance between the first and second guide surfaces is greater than or equal to the minimum distance between two relatively positioned strip-shaped toothed recesses, allowing the chain to enter the chain guide channel more smoothly, reducing vibration, and improving stability. Attached Figure Description

[0017] Figure 1 This is a perspective view of the utility model.

[0018] Figure 2 This is a bottom view of the utility model.

[0019] Figure 3 This is a new type of explosive. Figure 1 .

[0020] Figure 4 This is a new type of explosive. Figure 2 .

[0021] Figure 5 This is a cross-sectional view of the present invention.

[0022] Figure 6 This is a three-dimensional view of the sprocket of this utility model.

[0023] Drawing number markings: 1. Left housing; 101. Left guide chain housing; 102. Mounting groove; 2. Right housing; 201. Right guide chain housing; 202. Positioning post; 203. Guide block; 2031. First guide surface; 2032. Second guide surface; 2033. Arc surface; 3. Guide chain channel; 4. First inlet / outlet; 401. First transverse channel; 402. First longitudinal channel; 5. Second inlet / outlet; 501. Second transverse channel; 502. Second longitudinal channel; 503. First guide groove; 504. Second guide groove; 6. Chain; 7. Sprocket; 701. Tooth block; 702. Groove; 703. Arc groove; 8. Elliptical tooth socket; 9. Strip tooth socket. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1 to 6 As shown, a chain guide for a hoist includes a left housing 1 and a right housing 2, which are formed separately by casting. The left housing 1 and the right housing 2 are fixed together by fastening bolts. A semi-circular chain guide channel 3 is formed between the left housing 1 and the right housing 2. The two ends of the chain guide channel 3 are respectively connected to a first inlet / outlet 4 and a second inlet / outlet 5. The first inlet / outlet 4 includes a first transverse channel 401 and a first longitudinal channel 402 arranged in a cross shape. The second inlet / outlet 5 includes a second transverse channel 501 and a second longitudinal channel 502 arranged in a cross shape. One side of the first transverse channel 401 and the second transverse channel 501 are both linearly connected to the chain guide channel 3, and the first transverse channel 401 and the second transverse channel 501 are arranged in parallel. A first guide groove 503 is also provided at the lower end of one side of the second transverse channel 501, and a second guide groove 504 is also provided at the lower end of one side of the second longitudinal channel 502. The first guide groove 503 and the second guide groove 504 increase in size from top to bottom. The two ends of the chain guide channel 3 are connected to the first inlet / outlet 4 and the second inlet / outlet 5, which intersect at a cross shape, forming a cross-shaped four-way limiting for the chain 6. This reduces the friction area between the chain 6 and the contact surfaces of the left and right housings 1 and 2. The gradually increasing size of the first guide groove 503 and the second guide groove 504 helps the chain 6 move smoothly, reduces friction and vibration, disperses stress, and reduces local wear. The first guide groove 503 and the second guide groove 504 are perpendicular. The first guide groove 503 and the second guide groove 504 are arc-shaped, and the first guide groove 503 is connected to the chain guide channel 3 through the second transverse channel 501. The arc-shaped first guide groove 503 and the second guide groove 504 adopt a gradually expanding structure, which effectively disperses the stress concentration points of the chain 6, reduces local pressure, and allows the chain 6 to enter the chain guide channel 3 more smoothly and stably.

[0027] The left housing 1 and right housing 2 are located below the second inlet / outlet 5, with the left guide chain housing 101 and right guide chain housing 201 protruding downwards respectively. The first guide groove 503 is formed inside the right guide chain housing 201, and the second guide groove 504 is formed by the left guide chain housing 101 and the right guide chain housing 201. Below the second inlet / outlet 5 is the chain box in the hoist used to hold the chain 6. When the chain 6 is retracted into the chain box, the chain 6 will accumulate. The accumulated chain 6 causes the chain 6 on one side of the sprocket 7 to be in a slack state. Since the chain 6 is interlocked, when the hoist starts, the gradually expanding structure of the arc-shaped first guide groove 503 and second guide groove 504 formed by the cooperation of the left guide chain housing 101 and the right guide chain housing 201 allows the chain 6 to enter the second inlet / outlet 5 quickly, stably and smoothly, reducing local wear, reducing vibration, and improving stability.

[0028] The upper end of the right housing 2 has two positioning posts 202 protruding axially. The positioning posts 202 are used for non-rigid fixed connection with the hoist, that is, the hoist has positioning holes that match the positioning posts 202, and there is a certain movement clearance between the positioning posts 202 and the positioning holes.

[0029] A guide block 203 is formed on the right housing 2. The guide block 203 has two parallel first guide surfaces 2031 and second guide surfaces 2032. The first guide surface 2031 is one side of the first transverse channel 401, and the second guide surface 2032 is one side of the second transverse channel 501. An arc surface 2033 smoothly connects the first guide surface 2031 and the second guide surface 2032. The chain guide also includes a sprocket 7, which has six teeth. An elliptical tooth socket 8 is formed between two adjacent teeth, and a strip tooth socket 9 is formed in the middle of one tooth, connecting two adjacent elliptical tooth sockets 8. The distance between the first guide surface 2031 and the second guide surface 2032 is greater than or equal to the minimum distance between two strip tooth sockets 9 in opposite positions. The combination of the elliptical tooth socket 8 and the strip tooth socket 9 increases the meshing contact area between the chain 6 and the sprocket 7, reducing the load per unit area, increasing the load capacity, and improving the load-bearing speed. The distance between the first guide surface 2031 and the second guide surface 2032 is greater than or equal to the minimum distance between the two strip tooth sockets 9 in relative positions, allowing the chain 6 to enter the chain guide channel 3 more smoothly, reducing vibration and improving stability. The gear teeth include a pair of symmetrically arranged tooth blocks 701, with the strip tooth socket 9 circumferentially penetrating between the pair of tooth blocks 701. The inner side of the tooth block 701 has two symmetrical grooves 702, with the bottom surface of the groove 702 higher than the bottom surface of the strip tooth socket 9. The two pairs of grooves 702 form an elliptical tooth socket 8, with an axially penetrating arc-shaped groove 703 recessed at the bottom of the elliptical tooth socket 8. The upper end of the left housing 1 has a mounting groove 102. The left housing 1 and the right housing 2 have weight-reducing grooves with different geometric shapes. The elliptical tooth sockets 8 and strip tooth sockets 9 formed by the tooth block 701, groove 702 and arc groove 703 can increase the meshing contact area between the chain 6 and the sprocket 7, reduce the load per unit area, increase the load capacity and improve the load speed.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A chain guide for a hoist, comprising a left housing (1) and a right housing (2), wherein a semi-circular chain guide channel (3) is formed between the left housing (1) and the right housing (2), and a first inlet / outlet (4) and a second inlet / outlet (5) respectively connecting the two ends of the chain guide channel (3), characterized in that: The first inlet / outlet (4) includes a first transverse channel (401) and a first longitudinal channel (402) that are arranged in a cross shape. The second inlet / outlet (5) includes a second transverse channel (501) and a second longitudinal channel (502) that are arranged in a cross shape. One side of the first transverse channel (401) and the second transverse channel (501) are both directly connected to the guide chain channel (3). A first guide groove (503) is also provided at the lower end of one side of the second transverse channel (501). A second guide groove (504) is also provided at the lower end of one side of the second longitudinal channel (502). The first guide groove (503) and the second guide groove (504) increase in size from top to bottom.

2. The chain guide for a hoist according to claim 1, characterized in that: The first guide groove (503) and the second guide groove (504) are arc-shaped, and the first guide groove (503) is connected to the chain guide channel (3) through the second transverse channel (501).

3. The chain guide for a hoist according to claim 2, characterized in that: The first guide groove (503) and the second guide groove (504) are perpendicular.

4. The chain guide for a hoist according to claim 3, characterized in that: The left shell (1) and right shell (2) are located below the second inlet and outlet (5) and protrude downwards respectively with left guide chain shell (101) and right guide chain shell (201). The first guide groove (503) is formed in the right guide chain shell (201), and the second guide groove (504) is formed by the left guide chain shell (101) and the right guide chain shell (201).

5. The chain guide for a hoist according to claim 1, characterized in that: The upper end of the right housing (2) has a positioning post (202) protruding along the axial direction, and there are two positioning posts (202).

6. A chain guide for a hoist according to any one of claims 1 to 5, characterized in that: The right shell (2) is formed with a guide block (203). The guide block (203) has two parallel first guide surfaces (2031) and second guide surfaces (2032). The first guide surface (2031) is one side of the first transverse channel (401), and the second guide surface (2032) is one side of the second transverse channel (501).

7. A chain guide for a hoist according to claim 6, characterized in that: The first guide surface (2031) and the second guide surface (2032) are smoothly connected by an arc surface (2033).

8. A chain guide for a hoist according to claim 6, characterized in that: The chain guide also includes a sprocket (7) having six teeth, an elliptical tooth socket (8) between two adjacent teeth, and a strip tooth socket (9) in the middle of a tooth connecting two adjacent elliptical tooth sockets (8). The distance between the first guide surface (2031) and the second guide surface (2032) is greater than or equal to the minimum distance between two strip tooth sockets (9) in relative positions.

9. A chain guide for a hoist according to claim 8, characterized in that: The gear teeth include a pair of symmetrically arranged tooth blocks (701), and a strip-shaped tooth socket (9) circumferentially penetrates between the pair of tooth blocks (701). The inner side of the tooth block (701) has two symmetrical grooves (702). The bottom surface of the groove (702) is higher than the bottom surface of the strip-shaped tooth socket (9). The two pairs of grooves (702) form an elliptical tooth socket (8). The bottom of the elliptical tooth socket (8) is recessed downward with an axially penetrating arc-shaped groove (703).

10. A chain guide for a hoist according to claim 1, characterized in that: The upper end of the left housing (1) has a mounting groove (102).

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