Guide chain structure of loop chain type intelligent elevator

Abstract

The invention provides a guide chain structure of a loop chain type intelligent elevator, and belongs to the technical field of elevators. The technical problem that an existing guide chain is complex in structure and prone to being clamped is solved. The guide chain structure comprises an elevator shell and a chain wheel, a fixed seat is fixedly arranged in the elevator shell, a passage groove is formed in the fixed seat, a chain guide is arranged on the periphery of the chain wheel in a sleeving mode, a guide chain channel is formed in the chain guide, and the guide chain channel comprises an arc channel, a first inlet and outlet and a second inlet and outlet, a supporting block protrudes out of the outer side of the upper end of the chain guide in the axial direction, a supporting groove matched with the supporting block in a spliced mode is formed in the elevator shell, the first in-out opening and the second in-out opening are located in the lower end of the chain guide, the lower end of the chain guide is in clearance fit with the passageway groove, and the second in-out opening extends out of the lower end of the passageway groove. Vibration is reduced in the operation process of the elevator, and the phenomena of chain clamping and chain disengaging of the loop chain are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a chain guide structure of an endless chain type intelligent elevator. Background Art

[0002] The compact design of the chain-type intelligent hoist stems from the structural optimization of its core components. Compared with the wire rope intelligent hoist, this hoist uses a high-density wound chain and precision sprocket group to replace the bulky wire rope drum device. The unique overlapping structure of the chain enables it to have a stronger space utilization in the vertical direction, and a more compact transmission layout can be achieved with the miniaturized sprocket group. At the same time, since the chain system does not need to reserve space for the expansion of the wire rope, the drive unit can integrate a more efficient miniaturized power module, which allows the whole machine to maintain a strong load capacity (usually 2-3 times that of the same volume wire rope hoist) while the overall volume is reduced by about 40% compared with traditional intelligent lifting equipment. This structural feature is particularly suitable for industrial scenarios with limited space, and shows significant advantages in narrow factory environments or precision assembly lines. However, the chain and sprocket in the chain-type intelligent hoist require a high degree of matching accuracy in order for the sprocket to drive the chain section by section.

[0003] At present, the chain lifting device and electric chain hoist with patent application number 202411702748.6 disclose a sprocket, a chain, an outer contour limit device and a housing. The outer contour limit device is used to limit the outer circle trajectory of the chain's rotation path, and the housing is sleeved on the outside of the outer contour limit device to provide rigid support. The double limit and gap control of the outer contour limit device and the housing can reduce the displacement superposition of the chain to avoid chain jamming and chain derailment. This structure relaxes the accuracy requirements of the chain and sprocket, but the gap (1-2mm) between the housing and the limit device still needs to be strictly controlled. The clearance fit is sensitive to long-term wear, which may cause limit failure and cause the risk of chain derailment. The structure is highly complex, which increases the difficulty of assembly and production costs.

[0004] In addition, when a hook is hung on one end of the ring chain in the ring chain intelligent hoist and the other end is retracted, it falls vertically back into the chain box. When the hook is lowered, the ring chain in the chain box is brought out of the chain box through the circumferential movement of the sprocket. However, when the ring chain in the chain box is accumulated to a certain height, the ring chain is in a loose state, and the ring chain cannot match the tooth socket of the sprocket in time, causing the ring chain to fall out of the sprocket or get stuck. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a chain guide structure for a ring-chain type intelligent hoist. The technical problem to be solved by the present invention is how to reduce vibration during the operation of the ring-chain type intelligent hoist and prevent the ring chain from getting stuck or falling off.

[0006] The purpose of the present invention can be achieved by the following technical solutions: a chain guide structure of an endless chain type intelligent hoist, comprising a hoisting housing, a driving device arranged in the hoisting housing, the driving device comprising a driving shaft, one end of the driving shaft being fixedly connected to a sprocket, a fixed seat being fixedly arranged in the hoisting housing, the fixed seat being located below the sprocket, a passage groove being arranged on the fixed seat, a chain guide being arranged on the outer periphery of the sprocket, a chain guide being arranged in the chain guide, a chain guide channel being arranged in the chain guide, the chain guide channel comprising an arc channel and a first inlet and a second inlet directly connected to both ends of the arc channel, a support block protruding axially from the outer side of the upper end of the chain guide, a support groove being arranged in the hoisting housing and being spliced ​​with the support block, the first inlet and the second inlet being located at the lower part of the chain guide, the lower part of the chain guide being in clearance with the passage groove, a guide portion protruding downward from one end of the chain guide located at the second inlet and the guide portion extending out from the lower end of the passage groove. The driving device comprises a driving motor and a deceleration component, the driving shaft and the deceleration component are fixed, the driving motor rotates the driving shaft and drives the sprocket to rotate to realize the lifting and lowering of the endless chain.

[0007] This chain guide structure forms a non-fixed locking structure through the splicing of the support block and the support groove and the clearance between the lower end of the chain guide and the aisle groove, so that the chain guide has a certain spatial moving gap. Because the ring chain will touch the chain guide channel of the chain guide when it descends and rises quickly, the chain guide has a certain spatial moving gap to absorb the contact force brought by the ring chain and prevent the force on the chain guide from being directly transmitted to the hoist casing, which effectively reduces the vibration of the hoist casing and makes the ring chain type intelligent hoist run more stably. Furthermore, after the second inlet and outlet extend out of the lower end of the aisle groove, since the second inlet and outlet are located at the upper end of the chain box, that is to say, the chain coming out of the second inlet and outlet will fall vertically into the chain box, and the chain in the chain box will be accumulated below the second inlet and outlet. After being accumulated to a certain height, the section of the chain between the second inlet and outlet and the chain box is in a relaxed state. At the moment of starting, the sprocket rotates, and the chain can be straightened first at the guide part and then quickly enter the second inlet and outlet and match with the sprocket, which reduces the phenomenon of chain jamming and chain derailment, and the chain guide has a certain spatial moving gap to absorb the force of the chain touching the mouth of the second inlet and outlet, effectively reducing the vibration of the hoist casing, and making the chain type intelligent hoist run more stably.

[0008] In the chain guide structure of the above-mentioned ring chain type intelligent hoist, the sprocket has six teeth, an elliptical tooth pocket is provided between two adjacent teeth, and a strip tooth pocket is provided in the middle of one tooth to connect the two adjacent elliptical tooth pockets. The sprocket used in this structure has six teeth, and six teeth can lift and lower the ring chain faster than five teeth. The sprocket structure with six teeth cooperates with the elliptical tooth pocket to achieve a progressive engagement of the ring chain at a phase angle of 60°, reducing impact noise, and the ring chain is located between the strip tooth pocket and the chain guide channel, and one side of the two sides of the ring chain is located in the strip tooth pocket and the other side is located in the chain guide channel. The 60° phase angle of the six teeth cooperates with the chain guide channel to make the ring chain rotate more smoothly along the sprocket, reduce impact noise, reduce vibration, and improve the stable operation of the whole machine.

[0009] In the chain guide structure of the above-mentioned chain-type intelligent hoist, the first inlet and outlet include a first cross-shaped transverse channel and a first longitudinal channel, and the second inlet and outlet include a second cross-shaped transverse channel and a second longitudinal channel, and the minimum spacing H1 between the first transverse channel and the second transverse channel is greater than or equal to the minimum spacing H2 between two opposite bar-shaped tooth sockets. The cross-shaped channel better guides the chain to enter the sprocket, effectively eliminating the chain shaking phenomenon.

[0010] In the chain guide structure of the above-mentioned chain-type intelligent hoist, the first transverse channel has a straight first guide groove on one side close to the second transverse channel, and the second transverse channel has a straight second guide groove on one side close to the first transverse channel, and the spacing between the bottom surface of the first guide groove and the bottom surface of the second guide groove is the minimum spacing between the first transverse channel and the second transverse channel. The guide groove and the transverse channel are both planes, and the spacing between the bottom surface of the first guide groove and the bottom surface of the second guide groove is greater than or equal to the minimum spacing between the first transverse channel and the second transverse channel, which reduces the manufacturing precision and enables the chain to enter the sprocket better, effectively eliminating the chain shaking phenomenon, reducing vibration, and preventing the chain from getting stuck or falling off.

[0011] In the chain guide structure of the above-mentioned chain-type intelligent hoist, the second transverse channel has a first arc-shaped guide groove on the side away from the first transverse channel, and the first arc-shaped guide groove is located in the guide portion, and the first arc-shaped guide groove increases from top to bottom. Since the second transverse channel is located above the chain box, the first arc-shaped guide groove can better guide the transverse chain into the second transverse channel, reduce the force vibration of the chain guide, reduce the wear of the chain guide, and make the chain-type intelligent hoist run more stably.

[0012] In the chain guide structure of the above-mentioned chain-type intelligent hoist, one side of the second longitudinal channel has a second arc-shaped guide groove, the second arc-shaped guide groove is located in the guide portion, and the second arc-shaped guide groove increases from top to bottom. Since the second longitudinal channel is located above the chain box, the second arc-shaped guide groove can better guide the longitudinal chain into the second longitudinal channel, reduce the force vibration of the chain guide, and reduce the wear of the chain guide. The combination of the second arc-shaped guide groove and the first arc-shaped guide groove can straighten the chain in advance, so that the loose chain in the chain box can quickly enter the second transverse channel and the second longitudinal channel, thereby improving the overall efficiency.

[0013] In the chain guide structure of the above-mentioned ring chain type intelligent hoist, the chain guide includes a left shell and a right shell, the support block is located at the upper end of the left shell, the left shell and the right shell are fixed by fasteners, and a chain guide channel is formed between the left shell and the right shell. In order to facilitate molding, the use of left and right shells can simplify the mold, reduce costs, and improve production efficiency.

[0014] In the above-mentioned chain guide structure of the ring chain type intelligent hoist, a guide block is integrally formed on the left shell body, and the guide block is located between the first inlet and the second inlet. The upper end face of the guide block is an arc surface, and the arc surface is located in the strip tooth socket but does not contact the strip tooth socket.

[0015] In the chain guide structure of the above-mentioned ring chain type intelligent hoist, the chain guide comprises an upper shell and a lower shell, the support block and the arc channel are located in the upper shell, the first inlet and the second inlet are located in the lower shell, and a guide block is formed between the first inlet and the second inlet, and the upper end surface of the guide block is an arc surface. In order to facilitate molding, the use of upper and lower shells can simplify the mold, reduce costs, and improve production efficiency.

[0016] In the chain guide structure of the above-mentioned ring chain type intelligent hoist, the chain guide is made of cast iron material.

[0017] Compared with the prior art, the technical effects of the present invention are as follows: First, through the non-rigid splicing design of the matching of the support block and the support groove, and the matching of the lower end of the chain guide and the clearance of the aisle groove, a dynamic buffer structure is formed to effectively absorb the impact force of the ring chain during high-speed movement, and avoid the vibration being directly transmitted to the lifting casing. Combined with the 60° phase angle progressive meshing design of the six-tooth sprocket and the matching of the elliptical / bar-shaped tooth sockets, the impact noise during the engagement of the ring chain is further reduced, and low-vibration, low-noise and stable operation is achieved. Second, a cross-shaped inlet and outlet + guide groove composite structure is adopted to accurately guide the bidirectional movement path of the ring chain. At startup, the loose ring chain is quickly straightened through the arc-shaped guide groove of the second inlet and outlet to avoid chain jamming caused by accumulation; during operation, the synergistic effect of the guide groove and the sprocket tooth socket eliminates the vibration of the ring chain, prevents the chain links from being dislocated or disengaged, and reduces the risk of chain jamming and chain derailment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a chain-type intelligent hoist according to an embodiment of the present invention.

[0019] Figure 2 It is a front view of a guide chain structure according to an embodiment of the present invention.

[0020] Figure 3 It is a bottom view of the guide chain structure of embodiment 1 of the present invention.

[0021] Figure 4 The present invention is a three-dimensional chain guide Figure 1 .

[0022] Figure 5 The present invention is a three-dimensional chain guide Figure 2 .

[0023] Figure 6 The chain guide of the embodiment of the present invention explodes Figure 1 .

[0024] Figure 7 The chain guide of the embodiment of the present invention explodes Figure 2 .

[0025] Figure 8 It is a three-dimensional diagram of a lifting casing and a fixing seat according to a first embodiment of the present invention.

[0026] Fig. 9 It is a stereoscopic view of a sprocket according to an embodiment of the present invention.

[0027] Fig.10 1 is an exploded view of a chain guide according to a second embodiment of the present invention.

[0028] Figure number marking: 1. lifting casing; 101. supporting groove; 2. driving device; 201. driving shaft; 3. sprocket; 301. gear teeth; 302. elliptical tooth socket; 303. strip tooth socket; 4. chain box; 5. fixing seat; 501. aisle groove; 6. chain guide; 601. arc channel; 602. first inlet and outlet; 6021. first transverse channel; 6022. first longitudinal channel; 6023. first guide groove; 603. second inlet and outlet; 6031. second transverse channel; 6032. second longitudinal channel; 6033. second guide groove; 6034. first arc guide groove; 6035. second arc guide groove; 604. supporting block; 605. guide part; 61. left shell; 62. right shell; 63. guide block; 64. upper shell; 65. lower shell; 7. endless chain. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] It should be noted that the descriptions of the present invention regarding directions such as “up”, “down”, “left”, “right”, “top” and “bottom” are all defined based on the relationships between the orientations or positions shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] Embodiment 1: According to Figures 1 to 9 As shown, a chain guide structure of a ring chain 7 type intelligent hoist includes a hoisting casing 1, a driving device 2 is arranged in the hoisting casing 1, and the driving device 2 includes a driving motor and a deceleration component. The deceleration component is fixedly connected to a driving shaft 201, and one end of the driving shaft 201 is fixedly connected to a sprocket 3. The driving motor rotates the driving shaft 201 and drives the sprocket 3 to rotate to realize the lifting and lowering of the ring chain 7. The ring chain 7 is composed of two ring chain rings nested in each other. One end of the ring chain 7 is hung with a hook and the other end is located in a chain box 4. The chain box 4 is swingably connected to the hoisting casing 1, and the chain box 4 can swing slightly left and right relative to the casing.

[0032] A fixed seat 5 is fixedly arranged in the lifting casing 1, and the fixed seat 5 is located below the sprocket 3 and above the chain box 4. A passage groove 501 is arranged on the fixed seat 5. A chain guide 6 is arranged on the outer periphery of the sprocket 3. The chain guide 6 is made of cast iron material by casting, and the cast iron chain guide 6 has good wear resistance. The chain guide 6 has a chain guide channel therein, which includes a circular arc channel 601 and a first inlet and outlet 602 and a second inlet and outlet 603 which are directly connected to the two ends of the circular arc channel 601. A support block 604 protrudes axially from the outer side of the upper end of the chain guide 6. The support block 604 is preferably cylindrical. A support groove 101 which is spliced ​​and matched with the support block 604 is provided in the lifting casing 1. The first inlet and outlet 602 and the second inlet and outlet 603 are located at the lower part of the chain guide 6. The lower part of the chain guide 6 is gap-matched with the aisle groove 501. A guide portion 605 protrudes downward from one end of the chain guide 6 located at the second inlet and outlet 603. The guide portion 605 extends out from the lower end of the aisle groove 501, and the lower end surface of the guide portion 605 is located below the fixed seat 5. The splicing cooperation between the support block 604 and the support groove 101 and the clearance cooperation between the lower end of the chain guide 6 and the aisle groove 501 form a non-fixed locking structure, so that the chain guide 6 has a certain spatial movement gap, and the endless chain 7 is guided in an orderly manner through the guide part 605, avoiding the fixed seat 5 directly fixed on the hoisting casing 1, to prevent the fixed seat 5 from vibrating, and the endless chain 7 will touch the chain guide channel of the chain guide 6 when it descends and rises quickly. The chain guide 6 has a certain spatial movement gap, which can well absorb the contact force brought by the endless chain 7, prevent the force on the chain guide 6 from being directly transmitted to the hoisting casing 1, and reduce the sound caused by the collision of the endless chain 7 with the chain guide 6, effectively reducing the vibration and noise of the hoisting casing 1, and making the endless chain 7 type intelligent hoist run more stably. Furthermore, after the second inlet and outlet 603 extends out of the lower end of the aisle groove 501, since the second inlet and outlet 603 is located at the upper end of the chain box 4, that is to say, the ring chain 7 coming out of the second inlet and outlet 603 will fall vertically into the chain box 4, the ring chain 7 in the chain box 4 will be accumulated below the second inlet and outlet 603. After accumulating to a certain height, the section of the ring chain 7 between the second inlet and outlet 603 and the chain box 4 is in a relaxed state. At the moment of starting, the sprocket 3 rotates, and the ring chain 7 can be straightened at the guide part 605 and then quickly enter the second inlet and outlet 603 and match with the sprocket 3, thereby reducing the phenomenon of the ring chain 7 getting stuck and falling off. In addition, the chain guide 6 has a certain spatial moving gap to absorb the force of the ring chain 7 touching the mouth of the second inlet and outlet 603, thereby effectively reducing the vibration of the hoisting casing 1 and making the ring chain 7 type intelligent hoist run more stably.

[0033] The first inlet and outlet 602 includes a first cross-shaped transverse channel 6021 and a first longitudinal channel 6022, and the second inlet and outlet 603 includes a second cross-shaped transverse channel 6031 and a second longitudinal channel 6032. The minimum spacing H1 between the first transverse channel 6021 and the second transverse channel 6031 is greater than or equal to the minimum spacing H2 between the two opposite bar-shaped tooth sockets 303. The cross-shaped channel better guides the ring chain 7 to enter the sprocket 3, effectively eliminating the shaking phenomenon of the ring chain 7. The first transverse channel 6021 has a straight first guide groove 6023 on one side close to the second transverse channel 6031, and the second transverse channel 6031 has a straight second guide groove 6033 on one side close to the first transverse channel 6021. The spacing between the bottom surface of the first guide groove 6023 and the bottom surface of the second guide groove 6033 is the minimum spacing between the first transverse channel 6021 and the second transverse channel 6031. The first guide groove 6023 and the second guide groove 6033 are arranged in parallel, and the spacing between the bottom surface of the first guide groove 6023 and the bottom surface of the second guide groove 6033 is greater than or equal to the minimum spacing between the first transverse channel 6021 and the second transverse channel 6031, which reduces the manufacturing precision and can better allow the ring chain 7 to enter the sprocket 3, effectively eliminate the shaking phenomenon of the ring chain 7, reduce vibration, and prevent the chain 7 from being stuck or derailed. The second transverse channel 6031 has a first arc guide groove 6034 on the side away from the first transverse channel 6021. The first arc guide groove 6034 is located in the guide part 605, and the first arc guide groove 6034 increases from top to bottom in a gradually expanding shape. Since the second transverse channel 6031 is located above the chain box 4, the first arc guide groove 6034 can better guide the transverse ring chain 7 into the second transverse channel 6031, reduce the force vibration of the chain guide 6, reduce the wear of the chain guide 6, and make the ring chain 7 type intelligent hoist run more stably. A second arc-shaped guide groove 6035 is provided on one side of the second longitudinal channel 6032. The second arc-shaped guide groove 6035 is located in the guide portion 605. The second arc-shaped guide groove 6035 increases in size from top to bottom and gradually expands. Since the second longitudinal channel 6032 is located above the chain box 4, the second arc-shaped guide groove 6035 can better guide the longitudinal ring chain 7 into the second longitudinal channel 6032, reduce the force vibration of the chain guide 6, and reduce the wear of the chain guide 6. The second arc-shaped guide groove 6035 and the first arc-shaped guide groove 6034 can be combined to straighten the ring chain 7 in advance, so that the loose ring chain 7 in the chain box 4 can quickly enter the second transverse channel 6031 and the second longitudinal channel 6032, thereby improving the overall efficiency.

[0034] The chain guide 6 can be formed by casting the left housing 61 and the right housing 62 separately, the support block 604 is located at the upper end of the left housing 61, the left housing 61 and the right housing 62 are fixed by fasteners, and a chain guide channel is formed between the left housing 61 and the right housing 62. A guide block 63 is integrally formed on the left housing 61, the guide block 63 is located between the first inlet and outlet 602 and the second inlet and outlet 603, the upper end surface of the guide block 63 is an arc surface, the arc surface is located in the bar-shaped tooth socket 303 but does not contact the bar-shaped tooth socket 303.

[0035] The sprocket wheel 3 has six gear teeth 301, and an elliptical tooth pocket 302 is provided between two adjacent gear teeth 301, and a strip tooth pocket 303 is provided in the middle of one gear tooth 301 to connect the two adjacent elliptical tooth pockets 302. The six gear teeth 301 can lift and lower the endless chain 7 more quickly than the five gear teeth 301, and the sprocket wheel 3 structure of the six gear teeth 301 cooperates with the elliptical tooth pocket 302 to realize the progressive engagement of the endless chain at a phase angle of 760°, thereby reducing the impact noise, and the endless chain 7 is located between the strip tooth pocket 303 and the chain guide channel, and one side of the two sides of the endless chain 7 is located in the strip tooth pocket 303 and the other side is located in the chain guide channel, and the 60° phase angle of the six gear teeth 301 cooperates with the chain guide channel to make the endless chain 7 rotate more smoothly along the sprocket wheel 3, thereby reducing the impact noise, reducing the vibration, and improving the stable operation of the whole machine. The gear teeth 301 include a pair of symmetrically arranged tooth blocks, a strip tooth socket 303 circumferentially runs through the pair of tooth blocks, and the inner side of the tooth block has two symmetrical grooves, the bottom surface of the groove is higher than the bottom surface of the strip tooth socket 303, and the two pairs of grooves form an elliptical tooth socket 302, and the bottom of the elliptical tooth socket 302 is recessed downward with an arc groove running axially through it. The elliptical tooth socket 302 and the strip tooth socket 303 formed by the tooth block, the groove and the arc groove can increase the meshing contact area between the chain 7 and the sprocket 3, reduce the load per unit area, increase the load capacity, and increase the load speed.

[0036] Embodiment 2: Fig.10 As shown, the difference from the first embodiment is that the chain guide 6 can be formed by split casting of the upper shell 64 and the lower shell 65, the support block 604 and the arc channel 601 are located in the upper shell 64, the first inlet and outlet 602 and the second inlet and outlet 603 are located in the lower shell 65, and a guide block 63 is formed between the first inlet and outlet 602 and the second inlet and outlet 603, and the upper end surface of the guide block 63 is an arc surface. Split molding can simplify the mold, reduce costs, and improve production efficiency.

[0037] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. A chain guide structure of an endless chain type intelligent hoist, comprising a hoist housing (1), a driving device (2) being arranged in the hoist housing (1), the driving device (2) comprising a driving shaft (201), one end of the driving shaft (201) being fixedly connected to a sprocket (3), characterized in that: A fixing seat (5) is fixedly arranged in the lifting housing (1), the fixing seat (5) is located below the sprocket (3), a passage groove (501) is arranged on the fixing seat (5), a chain guide (6) is sleeved on the outer periphery of the sprocket (3), a chain guide channel is arranged in the chain guide (6), the chain guide channel includes a circular arc channel (601) and a first inlet and outlet (602) and a second inlet and outlet (603) which are directly connected to both ends of the circular arc channel (601), and the outer side of the upper end of the chain guide (6) is axially A support block (604) is protruded, and a support groove (101) is provided in the lifting housing (1) to be spliced ​​with the support block (604). The first inlet and outlet (602) and the second inlet and outlet (603) are located at the lower part of the chain guide (6), and the lower part of the chain guide (6) is clearance-matched with the passage groove (501). One end of the chain guide (6) located at the second inlet and outlet (603) protrudes downward with a guide portion (605), and the guide portion (605) extends out of the lower end of the passage groove (501).

2. The chain guide structure of a ring chain type intelligent hoist according to claim 1, characterized in that: The sprocket (3) has six gear teeth (301), an elliptical tooth pocket (302) is provided between two adjacent gear teeth (301), and a strip-shaped tooth pocket (303) is provided in the middle of one gear tooth (301) to connect the two adjacent elliptical tooth pockets (302).

3. The chain guide structure of a ring chain type intelligent hoist according to claim 2, characterized in that: The first inlet and outlet (602) includes a first cross-shaped transverse channel (6021) and a first longitudinal channel (6022), and the second inlet and outlet (603) includes a second cross-shaped transverse channel (6031) and a second longitudinal channel (6032), and the minimum spacing H1 between the first transverse channel (6021) and the second transverse channel (6031) is greater than or equal to the minimum spacing H2 between the two opposite bar-shaped tooth sockets (303).

4. The chain guide structure of a ring chain type intelligent hoist according to claim 3 is characterized in that: The first transverse channel (6021) has a straight first guide groove (6023) on its side close to the second transverse channel (6031), and the second transverse channel (6031) has a straight second guide groove (6033) on its side close to the first transverse channel (6021). The distance between the bottom surface of the first guide groove (6023) and the bottom surface of the second guide groove (6033) is the minimum distance between the first transverse channel (6021) and the second transverse channel (6031).

5. A chain guide structure of a ring chain type intelligent hoist according to claim 3 or 4, characterized in that: The second transverse channel (6031) has a first arc-shaped guide groove (6034) on the side away from the first transverse channel (6021), and the first arc-shaped guide groove (6034) is located in the guide portion (605). The first arc-shaped guide groove (6034) increases from top to bottom.

6. The chain guide structure of the ring chain type intelligent hoist according to claim 5, characterized in that: A second arc-shaped guide groove (6035) is provided on one side of the second longitudinal channel (6032), and the second arc-shaped guide groove (6035) is located in the guide portion (605), and the second arc-shaped guide groove (6035) increases in size from top to bottom.

7. The chain guide structure of a ring chain type intelligent hoist according to claim 2, characterized in that: The chain guide (6) comprises a left housing (61) and a right housing (62), the support block (604) is located at the upper end of the left housing (61), the left housing (61) and the right housing (62) are fixed by fasteners, and a chain guide channel is formed between the left housing (61) and the right housing (62).

8. The chain guide structure of the ring chain type intelligent hoist according to claim 7, characterized in that: A guide block (63) is integrally formed on the left shell body (61), and the guide block (63) is located between the first inlet and outlet (602) and the second inlet and outlet (603). The upper end surface of the guide block (63) is an arc surface, and the arc surface is located in the strip-shaped tooth socket (303) but does not contact the strip-shaped tooth socket (303).

9. The chain guide structure of a ring chain type intelligent hoist according to claim 1, characterized in that: The chain guide (6) comprises an upper shell (64) and a lower shell (65), wherein the support block (604) and the arc channel (601) are located in the upper shell (64), the first inlet and outlet (602) and the second inlet and outlet (603) are located in the lower shell (65), and a guide block (63) is formed between the first inlet and outlet (602) and the second inlet and outlet (603), wherein the upper end surface of the guide block (63) is an arc surface.

10. The chain guide structure of a ring chain type intelligent hoist according to claim 1, characterized in that: The chain guide (6) is formed of cast iron material.

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