CN220956669U - Telescopic worm gear head - Google Patents

Abstract

The utility model discloses a telescopic worm wheel head, which relates to the technical field of mechanical parts and comprises a worm wheel head body, wherein a control cavity is formed in the worm wheel head body, a first support shaft is rotatably connected to the top of the control cavity, a second support shaft is slidably connected to the inside of the first support shaft, a hand wheel is fixedly connected to the top of the second support shaft, a locking bolt is connected to one side of the first support shaft in a threaded manner, and a first square shaft is rotatably connected to the inside of the control cavity. The beneficial effects of the utility model are as follows: this telescopic worm wheel head, through the telescopic back shaft of hand wheel bottom, be convenient for when adjusting the overhead hand wheel height of worm wheel according to the demand, sliding connection between first square axle and the second square axle in the worm wheel head utilizes the screw thread post to drive the displacement of second square axle, and a plurality of worm wheels on the second square axle can remove thereupon, and telescopic structure meshes with the worm respectively, does not need to open the worm wheel head and also can change the worm wheel of damage.

Description

Telescopic worm gear head

Technical Field

The utility model relates to the technical field of mechanical parts, in particular to a telescopic worm gear head.

Background

The worm wheel head is used as a common precision transmission device, and the worm wheel rotates the worm wheel by utilizing the rotation of the worm, so that the rotation of a shaft or the increase of torque is realized, and the worm wheel head has wide application in various fields of mechanical manufacture, electric power, aerospace and the like.

The application number 202121144087.1 discloses a butterfly valve worm wheel head, drive the worm through rotating the hand wheel and rotate, the worm rotates and drives the worm wheel and rotate, the worm wheel drives the pivot and rotates, the pivot rotates and drives the disc and rotate, the disc rotates and drives the pointer and rotate, wait to the pointer rotate to the appointed scale of scale table, stop rotating the hand wheel, rotate the hand screw head this moment, the hand screw head rotates and drives the second screw and carry out threaded motion, the second screw upward movement, the extrusion slider is along slide bar upward movement, slider upward movement extrudes first spring, tensile second spring, slider upward movement drives fixture block upward movement, the fixture block upward movement can block the worm wheel, prevent that the worm wheel from rotating again, play a spacing effect, through setting up the disc, instruct arrow and instruction scale, not only make the worm wheel head possess directional function, the staff of being convenient for controls the block size of the inside valve clack of butterfly valve, be convenient for control the flow size of valve, moreover simple structure, the assembly of being convenient for.

The structure of the hand wheel and the worm wheel of above-mentioned application is fixed, when being inconvenient for adjusting the hand wheel height, when taking place to damage, need demolish and change it with the help of the instrument, it is comparatively inconvenient to influence work efficiency.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a telescopic worm gear head, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the telescopic worm wheel head comprises a worm wheel head body, a control cavity is arranged in the worm wheel head body, a first support shaft is rotationally connected to the top of the control cavity, a second support shaft is slidingly connected to the inside of the first support shaft, a hand wheel is fixedly connected to the top of the second support shaft, a locking bolt is in threaded connection with one side of the first support shaft, a first square shaft is rotationally connected to the inside of the control cavity, a second square shaft is sleeved on the outer side of the first square shaft, a plurality of worm wheel bodies are arranged on the outer side of the second square shaft, a rotating shaft is rotationally connected to one side of the worm wheel head body, the rotating shaft is fixedly connected with the first square shaft, convex grooves are respectively arranged in the inside of the worm wheel head body and on two sides corresponding to the control cavity, convex blocks are slidingly connected to the inside of the convex grooves, a worm is rotationally connected between the two convex blocks, the worm is meshed with one worm wheel body, a limiting plate is arranged at one end of the second square shaft, a limiting groove is formed in the limiting plate, a sliding groove is formed in one side of the worm in the control cavity, a sliding block is slidably connected in the sliding groove, a trigger plate is fixedly connected on one side of the sliding block, one end of the trigger plate is inserted into the limiting groove, a threaded column is rotationally connected in the control cavity, the threaded column penetrates through the trigger plate and is in threaded connection with the trigger plate, a groove is formed in the worm wheel head body and is positioned on the other side of the control cavity, a first connecting shaft and a second connecting shaft are rotationally connected in the groove, a rotating handle is rotationally connected to the outer wall of the worm wheel head body, the first connecting shaft is fixedly connected with the threaded column and the rotating handle respectively, the top of the worm wheel head body is rotatably connected with a rotary knob at one side of the first supporting shaft.

Preferably, a screw rod is rotatably connected to the inside of one of the convex grooves, penetrates through one of the convex blocks and is in threaded connection with the convex block, and the screw rod is fixedly connected with the rotary knob.

Preferably, a support plate is installed on one side of one convex block, a second bevel gear is rotationally connected to the bottom of the support plate, a third square shaft is rotationally connected to the top of the support plate, a fourth square shaft is slidingly connected to the inside of the third square shaft, and the third square shaft and the fourth square shaft are fixedly connected with the second bevel gear and the first support shaft respectively.

Preferably, a first bevel gear is mounted at one end of the worm, and the first bevel gear is meshed with the second bevel gear.

Preferably, a first sprocket and a second sprocket are respectively mounted on the outer sides of the first connecting shaft and the second connecting shaft, and chains are meshed on the outer sides of the first sprocket and the second sprocket.

Preferably, the first reel and the second reel are respectively installed on the outer side of the first connecting shaft and the outer side of the second connecting shaft and on one side of the first sprocket and one side of the second sprocket, the measuring flexible rule is wound on the outer side of the second reel, and one end of the measuring flexible rule is fixedly connected with the first reel.

Preferably, a display window is arranged at the top of the worm gear head body and above the groove.

The utility model provides a telescopic worm gear head, which has the following beneficial effects:

1. this telescopic worm wheel head, through the telescopic back shaft of hand wheel bottom, be convenient for when adjusting the overhead hand wheel height of worm wheel according to the demand, sliding connection between first square axle and the second square axle in the worm wheel head utilizes the screw thread post to drive the displacement of second square axle, and a plurality of worm wheels on the second square axle can remove thereupon, and telescopic structure meshes with the worm respectively, does not need to open the worm wheel head and also can change the worm wheel of damage.

2. This telescopic worm wheel head, through utilizing the elevating system at worm both ends, sliding connection between cooperation third square axle and the fourth square axle, be convenient for adjust the height of worm, avoid its displacement that hinders the worm wheel group, and the spool group of installation in the worm wheel head, under the effect of worm wheel group, can make the rotation of two sets of spools keep unanimous, along with the rotation of screw thread post and the displacement of worm wheel group, the receive and releases of control measurement flexible rule, according to numerical value and the mark on the flexible rule, the position of a plurality of worm wheels of being convenient for judge, when making its displacement, can be accurate align and mesh with the worm.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a top cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the utility model at A in FIG. 2;

Fig. 4 is a top view of the present utility model.

In the figure: 1. a worm gear head body; 2. a control chamber; 3. a first square shaft; 4. a second square shaft; 5. a worm wheel body; 6. a rotating shaft; 7. a convex groove; 8. a male block; 9. a worm; 10. a limiting plate; 11. a limit groove; 12. a chute; 13. a slide block; 14. a trigger plate; 15. a threaded column; 16. a groove; 17. a first connecting shaft; 18. a second connecting shaft; 19. a rotating handle; 20. a support plate; 21. a first bevel gear; 22. a second bevel gear; 23. a third square shaft; 24. a fourth square shaft; 25. a hand wheel; 26. a screw rod; 27. a turning button; 28. a first sprocket; 29. a second sprocket; 30. a chain; 31. a first reel; 32. a second reel; 33. measuring a flexible rule; 34. a display window; 35. a first support shaft; 36. a second support shaft; 37. a locking bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the telescopic worm wheel head comprises a worm wheel head body 1, a control cavity 2 is arranged in the worm wheel head body 1, a first support shaft 35 is rotatably connected to the top of the control cavity 2, a second support shaft 36 is slidably connected to the inside of the first support shaft 35, a hand wheel 25 is fixedly connected to the top of the second support shaft 36, a locking bolt 37 is connected to one side of the first support shaft 35 in a threaded manner, the height of the hand wheel 25 is conveniently adjusted through a telescopic structure of the first support shaft 35 and the second support shaft 36, different use requirements are met, a first square shaft 3 is rotatably connected to the inside of the control cavity 2, a second square shaft 4 is sleeved on the outer side of the first square shaft 3, a plurality of worm wheel bodies 5 are arranged on the outer side of the second square shaft 4, the first square shaft 3 and the second square shaft 4 are kept consistent by utilizing the structural characteristics of the first square shaft 3 and the second square shaft 4, simultaneously rotates, one side of the worm wheel head body 1 is rotationally connected with a rotating shaft 6, the rotating shaft 6 is fixedly connected with a first square shaft 3, convex grooves 7 are formed in the worm wheel head body 1 and are positioned on two corresponding sides of the control cavity 2, convex blocks 8 are slidingly connected in the convex grooves 7, a worm 9 is rotationally connected between the two convex blocks 8, the worm 9 is meshed with one worm wheel body 5, the worm 9 can drive the worm wheel body 5 and the first square shaft 3 to rotate, the rotating shaft 6 is driven to rotate under the action of the connection of the first square shaft 3 and the rotating shaft 6, a limiting plate 10 is mounted at one end of the second square shaft 4, a limiting groove 11 is formed in the limiting plate 10, a sliding groove 12 is formed in the control cavity 2 and positioned on one side of the worm 9, a sliding block 13 is slidingly connected in the sliding groove 12, a trigger plate 14 is fixedly connected on one side of the sliding block 13, one end of the trigger plate 14 is inserted into the limit groove 11, the inside of the control cavity 2 is rotationally connected with a threaded column 15, the threaded column 15 penetrates through the trigger plate 14 and is in threaded connection with the trigger plate 14, the trigger plate 14 is limited by the sliding groove 12 and the sliding block 13, the trigger plate 14 is driven to move when the threaded column 15 rotates, one end of the trigger plate 14 is inserted into the limit groove 11 of the limit plate 10, therefore, the limit plate 10 can drive the second square shaft 4 to move along with the displacement of the trigger plate 14, the positions of the worm wheel bodies 5 are regulated, different worm wheel bodies 5 are aligned with the worm 9 and meshed with the worm 9, the worm wheel bodies 5 are automatically replaced, a groove 16 is formed in the inside of the worm wheel head body 1 and positioned on the other side of the control cavity 2, a first connecting shaft 17 and a second connecting shaft 18 are rotationally connected in the inside of the groove 16, a rotating handle 19 is rotationally connected to the outer wall of the worm wheel head body 1, the first connecting shaft 17 is fixedly connected with the threaded column 15 and the rotary handle 19 respectively, so that the threaded column 15 is conveniently and manually controlled to rotate, the first sprocket 28 and the second sprocket 29 are respectively arranged on the outer sides of the first connecting shaft 17 and the second connecting shaft 18, the chain 30 is meshed with the outer sides of the first sprocket 28 and the second sprocket 29, the first connecting shaft 17 and the second connecting shaft 18 rotate simultaneously, the first reel 31 and the second reel 32 are respectively arranged on the outer sides of the first sprocket 28 and the second sprocket 18 and on one side of the first sprocket 28 and the second sprocket 29, the measuring flexible rule 33 is wound on the outer sides of the second reel 32, one end of the measuring flexible rule 33 is fixedly connected with the first reel 31, under the action of transmission connection between the first sprocket 28 and the second sprocket 29, the first reel 31 and the second reel 32 keep consistent and rotate simultaneously, the measuring flexible rule 33 is controlled to be retracted and released, the positions of the worm wheel bodies 5 are convenient to judge according to the values and marks on the measuring flexible rule 33, so that the worm wheel bodies can be accurately aligned and meshed with the worm 9, a display window 34 is arranged at the top of the worm wheel head body 1 and above the groove 16, the values on the measuring flexible rule 33 are convenient to observe, the top of the worm wheel head body 1 and one side of the first supporting shaft 35 are rotationally connected with a turn knob 27, the inside of one convex groove 7 is rotationally connected with a screw rod 26, the screw rod 26 penetrates one convex block 8 and is in threaded connection with the convex block 8, the screw rod 26 is fixedly connected with the turn knob 27, the screw rod 26 can drive the convex block 8 and the worm 9 to displace when the turn knob 27 drives the screw rod 26 to rotate through the threaded connection of the screw rod 26 and the convex block 8, the height of the worm 9 is adjusted, the worm 9 is prevented from obstructing the displacement of the worm wheel body 5, one side of the one convex block 8 is provided with the supporting plate 20, the bottom of the supporting plate 20 is rotationally connected with a second bevel gear 22, the top of the supporting plate 20 is rotationally connected with a third square shaft 23, the inside of the third square shaft 23 is slidingly connected with a fourth square shaft 24, the third square shaft 23 and the fourth square shaft 24 are respectively and fixedly connected with the second bevel gear 22 and a first supporting shaft 35, when the worm 9 is lifted under the action of a screw rod 26 under the action of a telescopic structure of the third square shaft 23 and the fourth square shaft 24, the third square shaft 23 and the fourth square shaft 24 can automatically stretch and retract, one end of the worm 9 is provided with the first bevel gear 21, the first bevel gear 21 is meshed with the second bevel gear 22, the first supporting shaft 35 is linked with the first bevel gear 21 through the connection of the third square shaft 23 and the fourth square shaft 24 with the second bevel gear 22 and the first supporting shaft 35 respectively, and when the hand wheel 25 drives the first supporting shaft 35 to rotate, the worm 9 can be driven to rotate.

In combination, when the telescopic worm wheel head is used, the second support shaft 36 in the first support shaft 35 is slid, the locking bolt 37 is rotated to fix the second support shaft 36, the height of the hand wheel 25 can be adjusted, the third square shaft 23 and the fourth square shaft 24 in the worm wheel head body 1 are respectively connected with the second bevel gear 22 and the first support shaft 35, and the second bevel gear 22 is meshed with the first bevel gear 21 at one end of the worm 9, so that the worm 9 can be driven to rotate when the hand wheel 25 rotates, and similarly, as the second square shaft 4 is sleeved outside the first square shaft 3, the plurality of worm wheel bodies 5 are arranged outside the shaft of the second square shaft 4, and the worm 9 is meshed with one of the worm wheel bodies 5, so that the plurality of worm wheel bodies 5, the second square shaft 4 and the first square shaft 3 keep consistent, and simultaneously rotate, under the action that the first square shaft 3 is connected with the rotating shaft 6, when the worm wheel body 5 meshed with the worm 9 is damaged, the rotating shaft 6 is driven to rotate, the rotating knob 27 can be rotated to drive the screw rod 26 in one of the convex grooves 7 to rotate, the screw rod 26 is connected with one of the convex blocks 8, and the two convex blocks 8 are connected with the two ends of the worm 9 in a rotating way, so that the worm 9 rises along with the lifting to adjust the height of the worm, meanwhile, due to the sliding connection of the third square shaft 23 and the fourth square shaft 24 and the square structural characteristics of the third square shaft 23 and the fourth square shaft 24, the third square shaft 23 and the fourth square shaft 24 can keep the connection of the first supporting shaft 35 and the second bevel gear 22, at the moment, the worm 9 leaves the worm wheel body 5, the rotating knob 19 is rotated, the threaded column 15 is rotated along with the connection of the first connecting shaft 17 in the groove 16 with the threaded column 15 and the rotating knob 19, and the threaded column 15 is connected with the trigger plate 14 in a threaded way, and one end of the trigger plate 14 is inserted into the limit groove 11 in the limit plate 10 at one end of the second square shaft 4, so that the thread post 15 drives the trigger plate 14 to rotate, and simultaneously, the limit plate 10 and the second square shaft 4 displace along with the rotation, after other worm wheel bodies 5 are aligned with the worm 9, the worm 9 is reset through the turn button 27, and then the worm 9 is meshed with the worm wheel body 5, so that the worm wheel head body 1 can continue to work.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. The utility model provides a telescopic worm wheel head, includes worm wheel head body (1), its characterized in that: the inside of worm wheel head body (1) has seted up control chamber (2), the top rotation of control chamber (2) is connected with first back shaft (35), the inside sliding connection of first back shaft (35) has second back shaft (36), the top fixedly connected with hand wheel (25) of second back shaft (36), one side threaded connection of first back shaft (35) has lock bolt (37), the inside rotation of control chamber (2) is connected with first square shaft (3), the outside of first square shaft (3) has cup jointed second square shaft (4), a plurality of worm wheel bodies (5) are installed in the axle outside of second square shaft (4), one side rotation of worm wheel head body (1) is connected with pivot (6), pivot (6) and first square shaft (3) fixed connection, the inside of head body (1) just be located control chamber (2) corresponding both sides and have all been seted up protruding groove (7), the inside sliding connection of worm wheel of protruding groove (7) has worm wheel piece (8), two worm wheel pieces (8) have one of protruding worm wheel (9) are equipped with between two one of them square shaft (9) and one of them worm (9), the inside of limiting plate (10) has seted up spacing groove (11), inside and the opposite side that is located worm (9) of control chamber (2) are seted up spout (12), the inside sliding connection of spout (12) has slider (13), one side fixedly connected with trigger plate (14) of slider (13), the one end of trigger plate (14) inserts in spacing groove (11), the inside rotation of control chamber (2) is connected with screw thread post (15), screw thread post (15) run through trigger plate (14) and with trigger plate (14) threaded connection, recess (16) are seted up to the inside of worm wheel head body (1) and be located control chamber (2) opposite side, the inside rotation of recess (16) is connected with first connecting axle (17) and second connecting axle (18), the outer wall rotation of worm wheel head body (1) is connected with changeing handle (19), first connecting axle (17) respectively with screw thread post (15) and changeing handle (19) fixed connection, the top of worm wheel head body (1) just is located first one side (35) of turning round.

2. A retractable worm gear head as claimed in claim 1, wherein: the inside of one convex groove (7) is rotationally connected with a screw rod (26), the screw rod (26) penetrates through one convex block (8) and is in threaded connection with the convex block (8), and the screw rod (26) is fixedly connected with a rotary knob (27).

3. A retractable worm gear head as claimed in claim 1, wherein: one of them one side of convex piece (8) is installed backup pad (20), the bottom rotation of backup pad (20) is connected with second bevel gear (22), the top rotation of backup pad (20) is connected with third square shaft (23), the inside sliding connection of third square shaft (23) has fourth square shaft (24), third square shaft (23) and fourth square shaft (24) respectively with second bevel gear (22) and first back shaft (35) fixed connection.

4. A retractable worm gear head as claimed in claim 3, wherein: a first bevel gear (21) is mounted at one end of the worm (9), and the first bevel gear (21) is meshed with a second bevel gear (22).

5. A retractable worm gear head as claimed in claim 1, wherein: a first sprocket (28) and a second sprocket (29) are respectively arranged on the outer sides of the first connecting shaft (17) and the second connecting shaft (18), and a chain (30) is meshed on the outer sides of the first sprocket (28) and the second sprocket (29).

6. A retractable worm gear head as claimed in claim 5, wherein: the first reel (31) and the second reel (32) are respectively installed on the outer side of the first connecting shaft (17) and the outer side of the second connecting shaft (18) and on one side of the first sprocket (28) and one side of the second sprocket (29), a measurement flexible rule (33) is wound on the outer side of the shaft of the second reel (32), and one end of the measurement flexible rule (33) is fixedly connected with the first reel (31).

7. A retractable worm gear head as claimed in claim 1, wherein: the top of the worm gear head body (1) and above the groove (16) is provided with a display window (34).