Chain guide device of chain hoist for stage

Abstract

The utility model discloses a chain guide device of a chain hoist for a stage, which comprises a seat plate fixed on the top surface of a hoist shell, a first chain block and a second chain block, and the first chain block and the second chain block are in split configuration with the seat plate. The second chain block is provided with a chain inlet / outlet II for the non-stress section of the lifting chain to pass through, the seat plate is respectively provided with a mounting seat hole I and a mounting seat hole II, the first chain block is sleeved in the mounting seat hole I, the second chain block is sleeved in the mounting seat hole II, a first positioning structure is arranged between the first chain block and the mounting seat hole I, and a second positioning structure is arranged between the second chain block and the mounting seat hole II. After the scheme is adopted, when foreign matters are wound into the chain inlet and outlet of the corresponding chain block to cause the hoisting chain to be clamped and wound, the seat plate is detached firstly, then the chain guide block is damaged, the foreign matters are cleaned, then the chain is inverted, the chain guide block is replaced and the chain is penetrated again, and finally, the seat plate provided with the chain guide block is mounted and fixed to the hoist shell, so that the operation can be recovered, and the maintenance efficiency is high.

Description

Technical Field

[0001] The utility model relates to a chain guiding device for a stage chain hoist, belonging to the technical field of stage special chain hoists. Background Art

[0002] Common chain guiding plates are directly provided with chain inlet and outlet holes. Since the chain inlet and outlet holes are easily worn, they become weak parts. When the chain inlet and outlet holes are damaged, the whole chain guiding plate part is scrapped. Therefore, the chain guiding plates of existing stage chain hoists are well-known vulnerable parts.

[0003] During actual use, when abnormal situations occur, such as when foreign objects (such as cloth strips) are inevitably wound into the chain inlet and outlet holes and jammed, resulting in the hoisting chain being stuck or entangled, it is necessary to first detach the chain guiding plate from the hoist housing, use a cutting machine to saw through the entire chain guiding plate along the chain inlet and outlet holes, thus damaging the chain guiding plate. After the chain hoist is reversed, the hoisting chain is re-threaded and installed, that is, the hoisting chain is threaded through the chain inlet and outlet holes of the chain guiding plate, and finally the chain guiding plate is reinstalled and fixed properly, and the stage chain hoist can resume normal operation. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a chain guiding device for a stage chain hoist aiming at the deficiencies of the above-mentioned existing technologies.

[0005] For this purpose, the utility model provides the following technical solutions:

[0006] The chain guiding device for a stage chain hoist includes a seat plate fixed to the top surface of the hoist housing. The improvement lies in that: it further includes a first chain block and a second chain block that are separately configured from the seat plate. The first chain block is provided with a chain inlet and outlet I for the stressed section of the hoisting chain to pass through, and the second chain block is provided with a chain inlet and outlet II for the non-stressed section of the hoisting chain to pass through. The seat plate is respectively provided with a mounting seat hole I and a mounting seat hole II. The mounting seat hole I loosely sleevs the first chain block and the mounting seat hole II loosely sleevs the second chain block, and a first positioning structure is provided between the first chain block and the mounting seat hole I and a second positioning structure is provided between the second chain block and the mounting seat hole II.

[0007] The above-mentioned first positioning structure includes a flange I provided on the side wall of the first chain block and a positioning groove I for accommodating the flange I provided on the hole wall of the mounting seat hole I; the second positioning structure includes a flange II provided on the side wall of the second chain block and a positioning groove II for accommodating the flange II provided on the hole wall of the mounting seat hole II.

[0008] One end of the above-mentioned first chain block is provided with a cap edge I, and the cap edge I abuts against the hole edge of the mounting seat hole I; one end of the second chain block is provided with a cap edge II, and the cap edge II abuts against the hole edge of the mounting seat hole II.

[0009] The above-mentioned first chain block is formed by fitting two semi-pieces together, and the inlet and outlet chain ports I are combined into a cross shape; the second chain block is formed by fitting two semi-pieces together, and the inlet and outlet chain ports II are combined into a cross shape.

[0010] After each chain block adopts the split fitting structure, when a foreign object is wound around the inlet and outlet chain ports of the corresponding chain block, first loosen the seat plate from the hoist shell. It is only necessary to decompose the chain block into two semi-pieces again (that is, the semi-chain block does not need to be damaged), and clean the wound foreign object to restore the operation of the hoist, which improves the service life of the chain block and thus reduces the use cost of the hoist. It abandons the deficiency that the existing guide chain plate needs to be sawn open along the inlet and outlet chain holes, saves the operation of the inverted chain and does not require the operation of threading the chain, reflecting the characteristics of efficient troubleshooting.

[0011] The upper diameter of the above-mentioned inlet and outlet chain port II is large and the lower diameter is small, and the guiding surface II with a trumpet shape at the upper opening is used to guide the non-loaded section of the lifting chain.

[0012] After the guiding surface II is arranged at the inlet and outlet chain port II, it is beneficial for the non-loaded section of the lifting chain in the loose chain state to move smoothly through, avoiding chain torsion and effectively reducing the probability of chain jamming.

[0013] The above-mentioned inlet and outlet chain port I and the inlet and outlet chain port II are coplanar.

[0014] The top surface of the above-mentioned seat plate is provided with a chain disengaging structure near the mounting seat hole II.

[0015] The above-mentioned chain disengaging structure is an arc-shaped convex strip, and its concave opening faces the mounting seat hole II.

[0016] One side of the above-mentioned seat plate is of an inwardly concave structure, reinforcing ribs are arranged at intervals around the mounting seat hole I and the mounting seat hole II respectively, and a connecting rib is arranged between the mounting seat hole I and the mounting seat hole II.

[0017] The inwardly concave design of the seat plate can achieve its lightweight and reduce the material consumption, and still ensure the strength of the seat plate after designing the reinforcing ribs and the connecting rib.

[0018] The advantages and positive effects of the present utility model are as follows:

[0019] Since each chain block and the seat plate adopt a split design structure, when a foreign object is wound around the inlet and outlet chain ports of the corresponding chain block, causing the lifting chain to be stuck and resulting in chain jamming and chain entanglement, first detach the seat plate from the hoist shell, and then use a cutting tool to damage the stuck guide chain block (the seat plate does not need to be damaged, so the seat plate of the present utility model becomes a non-vulnerable part compared with the prior art). After cleaning the foreign object, then perform the inverted chain and replace it with a new guide chain block and re-thread the chain. Finally, install the seat plate with the guide chain block back and fix it to the hoist shell to restore the operation. The maintenance efficiency is high, thus abandoning the deficiency of the need to saw open the entire existing guide chain plate along the inlet and outlet chain holes. Description of the Drawings

[0020] Figure 1 It is the front view of the chain guiding device of the ring chain hoist for stage of the present utility model;

[0021] Figure 2 It is the top view of the present utility model;

[0022] Figure 3 It is the bottom view of the present utility model;

[0023] Figure 4 It is the perspective view of the present utility model;

[0024] Figure 5 It shows the schematic structural view of half a chain block;

[0025] Figure 6 It shows the bottom view of half a chain block;

[0026] Figure 7 It shows the top view of half a chain block;

[0027] Figure 8 It is along Figure 7 Sectional view A-A of;

[0028] Figure 9 It shows the perspective view of half a chain block;

[0029] Figure 10 It is the front view of the chain guiding device of the present utility model assembled onto the ring chain hoist for stage;

[0030] Figure 11 It is Figure 10 Left view of. Detailed implementation mode

[0031] The present utility model provides a chain guiding device for a ring chain hoist for stage, including a seat plate 2, see Figure 1 , 10 , the seat plate 2 is fixed on the top surface 1 of the hoist housing, Figure 2 It shows four counterbores (not marked), specifically, four internal angle screws pass through the counterbores and are threadedly connected with the hoist housing, see Figure 2 , 3, as shown in Fig. 4, the chain guide device further includes a first chain block 3a and a second chain block 3b that are separately configured from the seat plate 2. The first chain block 3a is provided with an inlet / outlet chain opening I30a for the stressed section 4 of the hoisting chain to pass through, and the second chain block 3b is provided with an inlet / outlet chain opening II30b for the non-stressed section (not shown) of the hoisting chain to pass through. The seat plate 2 is respectively provided with a mounting seat hole I2a and a mounting seat hole II2b. The first chain block 3a is received in the mounting seat hole I2a and the second chain block 3b is received in the mounting seat hole II2b, and a first positioning structure is provided between the first chain block 3a and the mounting seat hole I2a, and a second positioning structure is provided between the second chain block 3b and the mounting seat hole II2b.

[0032] The hoisting chain meshes with a hoisting sprocket (a well-known part not shown) located inside the hoist housing. After passing around the hoisting sprocket, the stressed section 4 of the hoisting chain passes through the hoist housing and its chain head is connected to the hook assembly 5, and the non-stressed section of the hoisting chain also passes through the hoist housing and converges in a chain storage box (a well-known part not shown).

[0033] The aforementioned first positioning structure includes a flange I31a provided on the side wall of the first chain block 3a, and a positioning groove I21a for receiving the flange I31a is provided on the hole wall of the mounting seat hole I2a; the second positioning structure includes a flange II31b provided on the side wall of the second chain block 3b, and a positioning groove II21b for receiving the flange II31b is provided on the hole wall of the mounting seat hole II2b. One end (the bottom end) of the first chain block 3a is provided with a rim I32a, and the rim I32a abuts against the hole edge of the mounting seat hole I2a; one end (the bottom end) of the second chain block 3b is provided with a rim II32b, and the rim II32b abuts against the hole edge of the mounting seat hole II2b.

[0034] After the flanges and the positioning grooves are provided, the two chain blocks can be respectively circumferentially positioned on the seat plate; the rims I32a and II32b are flush with the bottom surface of the seat plate respectively. Please refer to Figure 4 During installation, the bottom surface of the seat plate 2 faces downward, and the bottom surface of the seat plate, the bottom end surface of the rim I32a, and the bottom end surface of the rim II32b respectively touch the top surface 1 of the hoist housing. Once the seat plate 2 is fastened, the first chain block 3a and the second chain block 3b are axially positioned.

[0035] Refer to Figure 4As shown, the first chain block 3a is formed by fitting together two half parts, and the central inlet / outlet chain port I30a is in a cross shape; the second chain block 3b is formed by fitting together two half parts, and the central inlet / outlet chain port II30b in the combination is in a cross shape. Each of the two half parts of the first chain block 3a is provided with a flange I31a, and each of the two half parts of the second chain block 3b is provided with a flange I31b. In addition, two positioning grooves I21a are respectively arranged on the hole wall of the mounting seat hole I2a, and two positioning grooves II21b are respectively arranged on the hole wall of the mounting seat hole II2b. Each of the two half parts of the first chain block 3a is provided with a cap edge I32a, and each of the two half parts of the second chain block 3b is provided with a cap edge II32b. Figures 5 to 9 The half part structures of each chain block are shown.

[0036] The upper diameter of the inlet / outlet chain port II30b is large and the lower diameter is small. The upper mouth has a guiding surface II300b in a trumpet shape for guiding the non-loaded section of the lifting chain. In this embodiment, the lower mouth of the inlet / outlet chain port II30b has an equal diameter. In order to achieve the universality of parts, the inlet / outlet chain port I30a is also designed to have a large upper diameter and a small lower diameter, and the upper mouth also has a guiding surface I300a in a trumpet shape. In this embodiment, the lower mouth of the inlet / outlet chain port I30a has an equal diameter.

[0037] The inlet / outlet chain port I30a and the inlet / outlet chain port II30b are coplanar.

[0038] On the top surface of the seat plate 2, a chain disengaging structure is arranged adjacent to the mounting seat hole II2b. The aforementioned chain disengaging structure is an arc-shaped convex strip 22, and the concave mouth of the arc-shaped convex strip 22 faces the mounting seat hole II2b. The setting of the chain disengaging structure makes it arc-shaped and the concave mouth has a reasonable orientation, which is beneficial for the non-loaded section of the lifting chain in a relaxed state to smoothly disengage from the lifting sprocket, avoiding the occurrence of chain overlapping and chain piling phenomena.

[0039] One surface (referring to the bottom surface) of the seat plate 2 is in a concave structure, and the other surface (referring to the top surface) is a plane. Reinforcing ribs 23 are respectively arranged at intervals around the mounting seat hole I2a and the mounting seat hole II2b. The reinforcing ribs 23 are externally connected to the periphery of the bottom surface of the seat plate 2, and a connecting rib 24 is arranged between the mounting seat hole I2a and the mounting seat hole II2b.

[0040] The seat plate is preferably made of aluminum or iron plate; both the first chain block 3a and the second chain block 3b are made of engineering plastics.

[0041] The first chain block 3a and the second chain block 3b can be used interchangeably. Specifically, the two half parts of the first chain block 3a and the two half parts of the second chain block 3b have the same shape and specifications.

[0042] When the utility model is assembled onto the stage ring chain hoist, the seat plate 2 is fixed to the top surface 1 of the hoist housing as Figure 4 shown. After the installation is completed, refer to Figure 10 、 11 .

Claims

1. A chain guiding device for a stage chain hoist, comprising a seat plate fixed to the top surface of the hoist housing, characterized in that: It also includes a first chain block and a second chain block which are separately configured from the seat plate. The first chain block is provided with a chain entry and exit I for the passage of the stressed section of the lifting chain, and the second chain block is provided with a chain entry and exit II for the passage of the non-stressed section of the lifting chain. The seat plate is respectively provided with a mounting seat hole I and a mounting seat hole II. The mounting seat hole I is empty for the first chain block and the mounting seat hole II is empty for the second chain block, and a first positioning structure is provided between the first chain block and the mounting seat hole I, and a second positioning structure is provided between the second chain block and the mounting seat hole II.

2. The chain guiding device of the stage chain hoist according to claim 1, characterized in that: The first positioning structure includes a flange I provided on the side wall of the first chain block and a positioning groove I for accommodating the flange I provided on the hole wall of the mounting seat hole I; the second positioning structure includes a flange II provided on the side wall of the second chain block and a positioning groove II for accommodating the flange II provided on the hole wall of the mounting seat hole II.

3. The chain guiding device of the stage chain hoist according to claim 2, characterized in that: One end of the first chain block is provided with a cap edge I, which contacts the edge of the mounting seat hole I; one end of the second chain block is provided with a cap edge II, which contacts the edge of the mounting seat hole II.

4. The chain guiding device of the stage chain hoist according to claim 1 or 2 or 3, characterized in that: The first chain block is formed by two half pieces being separated and joined together, and the chain inlet and outlet I are combined into a cross shape; the second chain block is formed by two half pieces being separated and joined together, and the chain inlet and outlet II are combined into a cross shape.

5. The chain guide device of the stage chain hoist according to claim 4, characterized in that The upper diameter of the chain inlet and outlet II is large and the lower diameter is small. The guide surface II with a trumpet-shaped upper opening is used to guide the non-stressed section of the lifting chain.

6. The chain guide device of the stage chain hoist according to claim 5, characterized in that: The chain inlet and outlet I and the chain inlet and outlet II are coplanar.

7. The chain guiding device of the stage chain hoist according to claim 1, characterized in that: A decoupling structure is provided on the top surface of the seat plate adjacent to the mounting seat hole II.

8. The chain guide device of a stage chain hoist according to claim 7, characterized in that: The decoupling structure is an arc-shaped convex strip, and its notch faces the mounting seat hole II.

9. The chain guide device of a stage chain hoist according to claim 1, 7 or 8, characterized in that: One side of the seat plate is a concave structure, and reinforcing ribs are arranged at intervals around the mounting seat hole I and the mounting seat hole II, and a connecting rib is provided between the mounting seat hole I and the mounting seat hole II.

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