A worm gear transmission mechanism

Abstract

The present invention discloses a worm gear transmission mechanism, which relates to the technical field of worm gear structure, and solves the problem that the worm wheel and the worm are both integral parts, and when damaged, the whole can only be disassembled and replaced, which results in high maintenance cost and troublesome operation. A worm gear transmission mechanism comprises a transmission worm wheel, a transmission worm meshing with the transmission worm wheel is arranged below the transmission worm wheel, transmission worm positioning end rods are arranged at both ends of the transmission worm, a positioning replacement mechanism is inserted in the middle of the transmission worm wheel, and the positioning replacement mechanism comprises a worm wheel mounting rod, and transmission worm wheel positioning end rods are arranged at both ends of the worm wheel mounting rod. The present invention can quickly replace a damaged worm wheel or worm by providing a quick release mechanism and a positioning replacement mechanism, effectively improving the maintenance and repair efficiency of the worm gear transmission mechanism, and ensuring that the replaced worm wheel will not be offset.

Description

Technical Field

[0001] The invention relates to the technical field of worm gear structures, and in particular to a worm gear transmission mechanism. Background Art

[0002] Worm gear structures are often used to transmit motion and power between two staggered axes. The worm wheel and worm are equivalent to a gear and a rack in their middle plane. The worm is similar in shape to a screw, so a large transmission ratio can be obtained, which is more compact than the staggered helical gear mechanism. The meshing tooth surfaces of the two wheels are in line contact, and its load-bearing capacity is much higher than that of the staggered helical gear mechanism. The worm drive is equivalent to a spiral drive, which is a multi-tooth meshing drive, so the transmission is smooth and the noise is very low.

[0003] However, the existing worm wheel and worm are integral parts, and when damaged, they can only be disassembled and replaced as a whole, which has high maintenance costs and troublesome operations. Summary of the invention

[0004] The object of the present invention is to provide a worm gear transmission mechanism to solve the problems mentioned in the above background technology that the existing worm wheel and worm are integral parts and can only be disassembled and replaced as a whole when damaged, resulting in high maintenance costs and cumbersome operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a worm gear transmission mechanism, comprising a transmission worm wheel, a transmission worm meshing with the transmission worm wheel is arranged below the transmission worm wheel, transmission worm positioning end rods are arranged at both ends of the transmission worm wheel, a positioning replacement mechanism is inserted in the middle of the transmission worm wheel, the positioning replacement mechanism comprises a worm wheel mounting rod, transmission worm wheel positioning end rods are arranged at both ends of the worm wheel mounting rod, and positioning plug holes are arranged inside the worm wheel mounting rod and both ends of the transmission worm wheel;

[0006] The outer surface of the worm gear mounting rod is provided with two symmetrically distributed receiving card slots, the inner side of the receiving card slot is provided with two symmetrical positioning posts, the inner side of the receiving card slot is movably provided with a worm gear clamping block, the worm gear clamping block is inserted in the bottom surface of the inner side of the receiving card slot and a telescopic sleeve is provided between the positioning post, the end of the telescopic sleeve close to the positioning post is provided with a positioning hole, one end of the positioning post is inserted in the inner side of the positioning hole, both sides of the positioning hole are provided with travel slide grooves, and the outer sides of the positioning post and the telescopic sleeve are provided with positioning springs;

[0007] The side surfaces of both ends of the part of the worm gear clamping block protruding from the receiving slot are provided with through-limiting sliding grooves, the inner side of the limiting sliding groove is provided with two symmetrically distributed adjusting sliders, one end of the adjusting slider is provided with a limiting slider, and the end portions of both ends of the worm gear clamping block are provided with through-limiting screw holes, and the inner sides of the screw holes are interspersed with connecting screws;

[0008] The end of the transmission worm gear positioning end rod close to the worm gear mounting rod and the end of the transmission worm gear positioning end rod close to the transmission worm gear are both provided with a quick-release mechanism, and the quick-release mechanism includes an anti-slip pad, the bottom surface of the anti-slip pad is provided with a bottom reserved hole, and the upper surface of the anti-slip pad is provided with three equidistantly arranged assembly blocks, and a positioning telescopic gas rod is penetrated through the middle of the three assembly blocks, and a connecting plug rod is provided at the end of the positioning telescopic gas rod, and the connecting plug rod is plugged into the inner side of the corresponding positioning plug hole, and two connecting air pipes are provided on the bottom surface of the bottom end where the positioning telescopic gas rod is connected to the connecting plug rod, and the bottom end of the connecting air pipe penetrates the anti-slip pad and extends to the inner side of the bottom reserved hole, and an air pipe joint is provided at the end of the connecting air pipe located inside the bottom reserved hole.

[0009] Preferably, two symmetrically distributed guide plug grooves are provided on the inner wall of the positioning plug hole, and two symmetrical guide plug strips are provided on the outer surface of the connecting rod, and the guide plug strips are slidably engaged with the inner sides of the guide plug grooves.

[0010] Preferably, one side edge of the guide plug strip is completely in contact with the outer surface of the connecting rod, and the guide plug strip and the connecting rod are integrally formed by casting.

[0011] Preferably, the top end of the telescopic sleeve fits with the end face of the worm gear clamping block and a threaded hole is provided at the center of the top end, the axis of the threaded hole coincides with the axis of the screw hole, the bottom end thread of the connecting screw is screwed into the inner side of the threaded hole, and the worm gear clamping block and the telescopic sleeve are connected by the connecting screw.

[0012] Preferably, the positioning column is inserted into the positioning hole and has anti-dropout plug holes on both sides of the top end thereof, an anti-dropout plug pin is inserted in the middle of the anti-dropout plug hole, and the anti-dropout plug pin inserted in the anti-dropout plug hole passes through the middle of the travel slide groove.

[0013] Preferably, the two adjusting sliders located on the inner side of the same limiting sliding groove have a through hole in the middle, a bolt is inserted in the middle of the through hole, and the two adjusting sliders are connected by the bolt.

[0014] Preferably, two symmetrically distributed positioning slots are provided on the inner side of the transmission worm wheel, and the inner side dimensions of the positioning slots are consistent with the outer side dimensions of the worm wheel clamping block.

[0015] Preferably, a guide slot is provided on the side of the limiting sliding block located inside the limiting sliding groove, a guide piece is provided inside the limiting sliding groove, and one end of the guide piece is inserted into the inner side of the guide slot.

[0016] Preferably, the parallelism and surface roughness of the surfaces in contact between the transmission worm gear positioning end rod and the worm gear mounting rod, the transmission worm and the transmission worm gear positioning end rod are consistent.

[0017] Preferably, locking blocks are provided on both sides of the anti-dropping pad, and the locking blocks are embedded in the bottom surfaces of the transmission worm positioning end rod and the transmission worm wheel positioning end rod and are connected to the transmission worm positioning end rod and the transmission worm wheel positioning end rod by screws.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention connects the air pipe of the external air pump with the air pipe joint at the end of the air pipe, and then inputs air into the middle of the connecting air pipe through the air pipe joint so that the air enters the interior of the positioning telescopic air rod so that the movable end of the positioning telescopic air rod contracts toward the interior of the positioning telescopic air rod. At this time, the positioning telescopic air rod drives the connecting rod to move synchronously, so that the connecting rod is separated from the positioning plug hole, until the positioning telescopic air rod drives the connecting rod to completely separate from the positioning plug hole. At this time, the transmission worm and the worm gear mounting rod can be quickly separated from the middle of the two transmission worm positioning end rods and the two transmission worm gear positioning end rods. After the worm gear mounting rod is separated, the two connecting rods can be connected. The bolts of the adjusting slider are disassembled, and then the two limiting sliders on the inner side of the limiting slide slot are removed. After the two limiting sliders are removed, the worm gear clamping block located on the inner side of the receiving card slot is squeezed toward the inner side of the receiving card slot. At this time, the worm gear clamping block will drive the telescopic sleeve to move downward and make the telescopic sleeve cover the end of the positioning column. At the same time, the telescopic sleeve compresses the positioning spring until the worm gear clamping block completely enters the inner side of the receiving card slot. At this time, the transmission worm gear can be removed from the outer side of the worm gear mounting rod, and the damaged worm gear or worm can be quickly replaced, which reduces the difficulty of inspection and maintenance for the staff and effectively improves the maintenance and inspection efficiency of the worm gear transmission mechanism.

[0020] 2. The present invention, after replacing the new transmission worm gear and sleeved the transmission worm gear on the outer side of the worm gear mounting rod, loosens the worm gear clamping block to allow the positioning spring to elastically recover so that the worm gear clamping block is pushed out of the receiving slot and clamped on the inner side of the positioning slot. At this time, the limit slider taken out of the limit slide slot is reset, and then the two corresponding adjusting sliders are connected by bolts and the two adjusting sliders are brought close to each other. At this time, the adjusting slider will generate a thrust directed to the transmission worm gear on the limit slider, so that the end of the limit slider is tightly fitted on the outer side of the transmission worm gear. The replaced transmission worm gear can be quickly clamped and positioned through the limit sliders located on both sides of the transmission worm gear, and it is ensured that the replaced transmission worm gear will not be offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the transmission worm gear of the present invention;

[0023] Figure 3It is a structural schematic diagram of the positioning replacement mechanism of the present invention;

[0024] Figure 4 It is a partial cross-sectional view of the worm gear clamping block of the present invention;

[0025] Figure 5 For the present invention Figure 3 A magnified view of the structure at center A;

[0026] Figure 6 It is a structural schematic diagram of the quick release mechanism of the present invention;

[0027] Figure 7 It is a partial cross-sectional schematic diagram of the transmission worm gear positioning end rod of the present invention;

[0028] Figure 8 It is a partial cross-sectional view of the transmission worm of the present invention.

[0029] In the figure: 1, transmission worm; 2, transmission worm wheel; 3, transmission worm positioning end rod; 4, transmission worm wheel positioning end rod; 5, positioning replacement mechanism; 501, worm wheel mounting rod; 502, worm wheel clamping block; 503, limiting slide groove; 504, adjustment slider; 505, limiting slider; 506, storage slot; 507, screw hole; 508, positioning column; 509, telescopic sleeve; 510, guide slot; 511, guide sheet; 512, positioning hole; 513 , travel slide; 514, anti-dropping plug pin; 515, positioning spring; 516, anti-dropping plug hole; 517, connecting screw; 6, quick release mechanism; 601, anti-dropping pad; 602, positioning telescopic gas rod; 603, assembly block; 604, connecting plug rod; 605, guide plug strip; 606, bottom reserved hole; 607, connecting air pipe; 608, air pipe joint; 609, locking block; 7, positioning plug hole; 8, positioning card slot; 9, guide plug slot. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figures 1 to 8 , an embodiment of the present invention: a worm gear transmission mechanism, including a transmission worm wheel 2, a transmission worm 1 meshing with the transmission worm wheel 2 is arranged below the transmission worm wheel 2, both ends of the transmission worm 1 are provided with transmission worm positioning end rods 3, the middle of the transmission worm wheel 2 is interspersed with a positioning replacement mechanism 5, the positioning replacement mechanism 5 includes a worm wheel mounting rod 501, both ends of the worm wheel mounting rod 501 are provided with transmission worm wheel positioning end rods 4, and both ends of the worm wheel mounting rod 501 and the transmission worm 1 are provided with positioning plug holes;

[0032] The outer surface of the worm gear mounting rod 501 is provided with two symmetrically distributed receiving slots 506, and the inner side of the receiving slots 506 is provided with two symmetrical positioning posts 508. A worm gear clamping block 502 is movably provided on the inner side of the receiving slots 506. A telescopic sleeve 509 is provided between the bottom surface of the worm gear clamping block 502 inserted in the inner side of the receiving slots 506 and the positioning posts 508. A positioning hole 512 is provided at the end of the telescopic sleeve 509 close to the positioning posts 508. One end of the positioning posts 508 is inserted in the inner side of the positioning hole 512. Both sides of the positioning hole 512 are provided with travel slide grooves 513. Positioning springs 515 are provided on the outer sides of the positioning posts 508 and the telescopic sleeve 509.

[0033] The side surfaces of both ends of the part of the worm gear clamping block 502 protruding from the receiving slot 506 are provided with through-limiting sliding grooves 503, the inner side of the limiting sliding grooves 503 is provided with two symmetrically distributed adjusting sliders 504, one end of the adjusting slider 504 is provided with a limiting slider 505, and the end portions of both ends of the worm gear clamping block 502 are provided with through-limiting screw holes 507, and the inner side of the screw holes 507 is inserted with connecting screws 517;

[0034] The end of the transmission worm gear positioning end rod 4 close to the worm gear mounting rod 501 and the end of the transmission worm gear positioning end rod 3 close to the transmission worm gear 1 are both provided with a quick-release mechanism 6, and the quick-release mechanism 6 includes an anti-slip pad 601, and the bottom surface of the anti-slip pad 601 is provided with a bottom reserved hole 606, and the upper surface of the anti-slip pad 601 is provided with three equidistantly arranged assembly blocks 603, and a positioning telescopic gas rod 602 is penetrated in the middle of the three assembly blocks 603, and a connecting plug rod 604 is provided at the end of the positioning telescopic gas rod 602, and the connecting plug rod 604 is plugged into the inner side of the corresponding positioning plug hole 7, and two connecting air pipes 607 are provided on the bottom surface of the bottom end where the positioning telescopic gas rod 602 is connected to the connecting plug rod 604, and the bottom end of the connecting air pipe 607 penetrates the anti-slip pad 601 and extends to the inner side of the bottom reserved hole 606, and the end of the connecting air pipe 607 located inside the bottom reserved hole 606 is provided with an air pipe joint 608.

[0035] Furthermore, two symmetrically distributed guide plug grooves 9 are provided on the inner wall of the positioning plug hole 7, and two symmetrical guide plug strips 605 are provided on the outer surface of the connecting rod 604. The guide plug strips 605 are slidably engaged in the inner side of the guide plug groove 9. When the connecting rod 604 rotates, the guide plug strips 605 slidably engaged in the inner side of the guide plug groove 9 can drive the transmission worm 1 to rotate synchronously.

[0036] Furthermore, one side edge of the guide strip 605 is completely fitted onto the outer surface of the connecting rod 604. The guide strip 605 and the connecting rod 604 are formed by integral casting. The integrally cast components are stably connected as a whole, and the connection has high mechanical strength and will not break or separate easily.

[0037] Furthermore, the top of the telescopic sleeve 509 fits with the end face of the worm gear clamping block 502 and a threaded hole is set at the center of the top, the axis of the threaded hole coincides with the axis of the screw hole 507, and the bottom end of the connecting screw 517 is threaded into the inner side of the threaded hole. The worm gear clamping block 502 and the telescopic sleeve 509 are connected by the connecting screw 517, and the telescopic sleeve 509 and the worm gear clamping block 502 can be quickly docked, so that after the worm gear clamping block 502 is installed into the storage slot 506, the worm gear clamping block 502 cannot be easily separated from the worm gear mounting rod 501.

[0038] Furthermore, the top of the telescopic sleeve 509 is fitted with the end face of the worm gear clamping block 502 and a threaded hole is set in the center of the top, the axis of the threaded hole coincides with the axis of the screw hole 507, and the bottom end of the connecting screw 517 is threaded into the inner side of the threaded hole. The worm gear clamping block 502 and the telescopic sleeve 509 are connected by the connecting screw 517, and the anti-disconnection plug pin 514 is inserted through the middle of the travel slide groove 513 and inserted into the inner side of the anti-disconnection plug hole 516, so that the telescopic sleeve 509 and the positioning column 508 can be quickly connected and ensure that the telescopic sleeve 509 and the positioning column 508 will not be easily separated.

[0039] Furthermore, there are through holes in the middle of the two adjusting sliders 504 located on the inner side of the same limiting slide groove 503, and bolts are inserted in the middle of the through holes. The two adjusting sliders 504 are connected by bolts, and the distance between the two adjusting sliders 504 can be adjusted by the bolts, thereby changing the distance between the limiting slider 505 and the transmission worm gear 2, thereby achieving fixed clamping of the limiting slider 505 on the transmission worm gear 2.

[0040] Furthermore, two symmetrically distributed positioning slots 8 are provided on the inner side of the transmission worm gear 2, and the inner side dimensions of the positioning slots 8 are consistent with the outer side dimensions of the worm gear clamping block 502, ensuring that the transmission worm gear 2 will not shake after the worm gear clamping block 502 is clamped on the inner side of the positioning slot 8, and the transmission worm gear 2 can drive the worm gear clamping block 502 and the worm gear mounting rod 501 to rotate synchronously when rotating, thereby making the transmission worm gear positioning end rod 4 rotate synchronously.

[0041] Furthermore, a guide slot 510 is provided on the side of the limit slider 505 located on the inner side of the limit slot 503, and a guide piece 511 is provided on the inner side of the limit slot 503. One end of the guide piece 511 is inserted into the inner side of the guide slot 510. The guide piece 511 inserted into the inner side of the guide slot 510 can limit the moving direction of the limit slider 505, so that the limit slider 505 can only move linearly along the direction of the guide piece 511, while ensuring that the limit slider 505 will not easily detach from the middle of the limit slot 503.

[0042] Furthermore, the parallelism and surface roughness of the surfaces where the transmission worm gear positioning end rod 4 and the worm gear mounting rod 501, and the transmission worm 1 and the transmission worm gear positioning end rod 3 contact each other are consistent, ensuring that the anti-slip pad 601 will not easily separate from the middle of the transmission worm gear positioning end rod 3 and the transmission worm gear positioning end rod 4 after installation, thereby avoiding accidental falling off of the anti-slip pad 601 and causing failure of the device.

[0043] Furthermore, locking blocks 609 are provided on both sides of the anti-dropping pad 601. The locking blocks 609 are embedded in the bottom surfaces of the transmission worm positioning end rod 3 and the transmission worm wheel positioning end rod 4 and are connected to the transmission worm positioning end rod 3 and the transmission worm wheel positioning end rod 4 by screws, thereby ensuring that the anti-dropping pad 601 will not be easily separated from the middle of the transmission worm positioning end rod 3 and the transmission worm wheel positioning end rod 4 after installation, thereby avoiding accidental falling off of the anti-dropping pad 601 and causing malfunction of the device.

[0044] Working principle: During use, when the worm wheel or worm in the worm gear transmission mechanism is damaged, first connect the air pipe of the external air pump with the air pipe joint 608 at the end of the connecting air pipe 607, and then input gas into the middle of the connecting air pipe 607 through the air pipe joint 608 so that the gas enters the interior of the positioning telescopic air rod 602 so that the movable end of the positioning telescopic air rod 602 shrinks toward the interior of the positioning telescopic air rod 602. At this time, the positioning telescopic air rod 602 will drive the connecting plug rod 604 to move synchronously, so that the connecting plug rod 604 is separated from the positioning plug hole 7, until the positioning telescopic air rod 602 drives the connecting plug rod 604 to completely separate from the positioning plug hole 7. At this time, the transmission worm 1 and the worm wheel mounting rod 501 can be quickly detached from the middle of the two transmission worm positioning end rods 3 and the two transmission worm wheel positioning end rods 4, and the worm wheel mounting rod 5 01 After detachment, the bolts connecting the two adjusting sliders 504 can be disassembled, and then the two limit sliders 505 on the inner side of the limit slide slot 503 can be removed. After the two limit sliders 505 are removed, the worm gear clamping block 502 located on the inner side of the receiving slot 506 is squeezed toward the inner side of the receiving slot 506. At this time, the worm gear clamping block 502 will drive the telescopic sleeve 509 to move downward and make the telescopic sleeve 509 cover the end of the positioning column 508. At the same time, the telescopic sleeve 509 compresses the positioning spring 515 until the worm gear clamping block 502 completely enters the inner side of the receiving slot 506. At this time, the transmission worm gear 2 can be removed from the outer side of the worm gear mounting rod 501, and the damaged worm gear or worm can be quickly replaced, which reduces the difficulty of inspection and maintenance for the staff and effectively improves the maintenance and inspection efficiency of the worm gear transmission mechanism.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A worm gear transmission mechanism, comprising a transmission worm gear (2), characterized in that: A transmission worm (1) meshing with the transmission worm wheel (2) is arranged below the transmission worm wheel (2), transmission worm positioning end rods (3) are arranged at both ends of the transmission worm wheel (1), a positioning replacement mechanism (5) is inserted in the middle of the transmission worm wheel (2), the positioning replacement mechanism (5) comprises a worm wheel mounting rod (501), transmission worm wheel positioning end rods (4) are arranged at both ends of the worm wheel mounting rod (501), and positioning plug holes (7) are arranged inside the worm wheel mounting rod (501) and both ends of the transmission worm wheel (1); The outer surface of the worm gear mounting rod (501) is provided with two symmetrically distributed receiving slots (506), the inner side of the receiving slot (506) is provided with two symmetrical positioning posts (508), the inner side of the receiving slot (506) is provided with a worm gear clamping block (502) movably arranged, the worm gear clamping block (502) is inserted in the bottom surface of the inner side of the receiving slot (506) and a telescopic sleeve (509) is arranged between the positioning post (508), the end of the telescopic sleeve (509) close to the positioning post (508) is provided with a positioning hole (512), one end of the positioning post (508) is inserted in the inner side of the positioning hole (512), both sides of the positioning hole (512) are provided with travel slide grooves (513), and the outer sides of the positioning post (508) and the telescopic sleeve (509) are provided with positioning springs (515); The side surfaces of both ends of the part of the worm gear clamping block (502) protruding from the receiving slot (506) are provided with through-limiting sliding grooves (503), the inner side of the limiting sliding groove (503) is provided with two symmetrically distributed adjusting sliders (504), one end of the adjusting slider (504) is provided with a limiting slider (505), and the end portions of both ends of the worm gear clamping block (502) are provided with through-limiting screw holes (507), and the inner side of the screw hole (507) is inserted with a connecting screw (517); The end of the transmission worm gear positioning end rod (4) close to the worm gear mounting rod (501) and the end of the transmission worm gear positioning end rod (3) close to the transmission worm gear (1) are both provided with a quick release mechanism (6), the quick release mechanism (6) comprising an anti-slip pad (601), the bottom surface of the anti-slip pad (601) is provided with a bottom reserved hole (606), the upper surface of the anti-slip pad (601) is provided with three equidistantly arranged assembly blocks (603), the middle of the three assembly blocks (603) is penetrated by a positioning telescopic gas rod (602), the A connecting rod (604) is provided at the end of the positioning telescopic gas rod (602), and the connecting rod (604) is plugged into the inner side of the corresponding positioning plug hole (7). Two connecting air pipes (607) are provided on the bottom surface of the bottom end where the positioning telescopic gas rod (602) is connected to the connecting rod (604). The bottom end of the connecting air pipe (607) passes through the anti-slip pad (601) and extends to the inner side of the bottom reserved hole (606). The end of the connecting air pipe (607) located inside the bottom reserved hole (606) is provided with an air pipe joint (608); The inner wall of the positioning plug hole (7) is provided with two symmetrically distributed guide plug grooves (9), and the outer surface of the connecting plug rod (604) is provided with two symmetrical guide plug strips (605), and the guide plug strips (605) are slidably engaged with the inner side of the guide plug groove (9); One side edge of the guide plug strip (605) is completely attached to the outer surface of the connecting rod (604), and the guide plug strip (605) and the connecting rod (604) are integrally cast; The two adjusting sliders (504) located inside the same limiting slide groove (503) both have through holes in the middle, bolts are inserted in the middle of the through holes, and the two adjusting sliders (504) are connected by bolts; the distance between the two adjusting sliders (504) is adjusted by the bolts, thereby changing the distance between the limiting slider (505) and the transmission worm gear (2), thereby achieving the fixed clamping of the limiting slider (505) on the transmission worm gear (2).

2. A worm gear transmission mechanism according to claim 1, characterized in that: The top end of the telescopic sleeve (509) is fitted with the end surface of the worm gear clamping block (502) and a threaded hole is provided at the center of the top end. The axis of the threaded hole coincides with the axis of the screw hole (507). The bottom end of the connecting screw (517) is threaded into the inner side of the threaded hole. The worm gear clamping block (502) and the telescopic sleeve (509) are connected via the connecting screw (517).

3. The worm gear transmission mechanism according to claim 1, characterized in that: The positioning column (508) is inserted into the positioning hole (512) and has anti-dropout plug holes (516) on both sides of the top end thereof. An anti-dropout plug pin (514) is inserted in the middle of the anti-dropout plug hole (516). The anti-dropout plug pin (514) inserted in the anti-dropout plug hole (516) passes through the middle of the travel slide groove (513).

4. A worm gear transmission mechanism according to claim 1, characterized in that: Two symmetrically distributed positioning slots (8) are provided on the inner side of the transmission worm wheel (2), and the inner side dimensions of the positioning slots (8) are consistent with the outer side dimensions of the worm wheel clamping block (502).

5. The worm gear transmission mechanism according to claim 1, characterized in that: A guide slot (510) is provided on the side of the limiting sliding block (505) located inside the limiting sliding groove (503), and a guide piece (511) is provided on the inside of the limiting sliding groove (503), and one end of the guide piece (511) is inserted into the inside of the guide slot (510).

6. The worm gear transmission mechanism according to claim 1, characterized in that: The parallelism and surface roughness of the surfaces where the transmission worm gear positioning end rod (4) and the worm gear mounting rod (501), the transmission worm (1) and the transmission worm gear positioning end rod (3) contact each other are consistent.

7. The worm gear transmission mechanism according to claim 1, characterized in that: Locking blocks (609) are provided on both sides of the anti-slip pad (601). The locking blocks (609) are embedded in the bottom surfaces of the transmission worm positioning end rod (3) and the transmission worm wheel positioning end rod (4) and are connected to the transmission worm positioning end rod (3) and the transmission worm wheel positioning end rod (4) by screws.

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