Drawing frame speed regulating mechanism

Abstract

The utility model provides a drawing frame speed regulating mechanism, which relates to the technical field of speed regulating structures and comprises a connecting seat, a uniform-speed shaft is rotatably arranged on the front side of the top of the connecting seat, and a uniform-speed belt wheel is fixedly arranged outside the uniform-speed shaft; two groups of variable-speed shaft brackets are fixedly arranged on the rear side of the top of the connecting seat; a hollow variable-speed shaft is rotationally arranged in the middle of the tops of the two groups of variable-speed shaft brackets; a speed change wheel is fixedly arranged outside the hollow speed change shaft, four sets of fan-shaped grooves are formed outside the speed change wheel, and adjusting plates are arranged in the fan-shaped grooves. The control piston is arranged, the rapid adjusting function is provided, the transmission effect can be adjusted in the transmission process, control is convenient, stretching and retracting of the control piston are controlled through the movable rotating base, air is input into the four sets of air telescopic rods when the control piston retracts, the four sets of air telescopic rods are synchronously opened, the adjusting plate is unfolded outwards, and then the belt can be opened, operation is convenient, and practicability is high. The four adjusting plates can be synchronously adjusted, the control effect is improved, and the problem that an existing speed adjusting mechanism is inconvenient to synchronously and rapidly adjust is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the speed regulation structure technical field, more specifically, it is especially related to a speed regulation mechanism of drawing frame. BACKGROUND

[0002] The transmission of the drawing frame is mainly through belt transmission, and the speed regulation structure is mainly realized by adjusting the outer diameter to change, and the outer diameter is generally fixed by bolts.

[0003] The patent with the application number CN202120670726.1 discloses a speed regulation mechanism of drawing frame, which comprises a device body, a bearing rotating seat is arranged at the rear right side of the device body, an adjusting limiting cylinder is sleeved and locked through a nut in front of the bearing rotating seat; four pulley adjusting plates are inserted and installed in the outer circumferential annular array of the adjusting limiting cylinder, and four guide locking blocks are inserted and installed in the outer circumferential annular array of the rear end surface of the adjusting limiting cylinder; the guide locking blocks are inserted into the inner part of the pulley adjusting plate, and the front and rear direction locking fixing rods are installed on the front end surface of the guide locking blocks; the locking fixing rods are inserted into the inner part of the adjusting limiting cylinder. The setting of the adjusting limiting cylinder facilitates the insertion of the pulley adjusting plate and the limiting and guiding of the pulley adjusting plate through the guide locking block, facilitates the locking of the pulley adjusting plate through the cooperation of the guide locking block and the locking fixing rod, and facilitates the extension and contraction of the pulley adjusting plate through the threaded installation of the adjusting rotating cylinder to move forward and backward, thereby solving the problem that the driven pulley speed cannot be regulated by adjusting the diameter of the driving pulley.

[0004] Based on the above, the existing speed regulation mechanism is inconvenient to adjust and control the speed change effect in the transmission process, is not conducive to stable transmission, the stability of bilateral adjustment tension is insufficient, lacks protection measures when the belt is broken, and is not conducive to safety protection. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a speed regulation mechanism of drawing frame to solve the problems of the existing speed regulation mechanism in the background art, which is inconvenient to adjust and control the speed change effect in the transmission process, is not conducive to stable transmission, the stability of bilateral adjustment tension is insufficient, and lacks protection measures when the belt is broken.

[0006] The purpose and effect of the speed regulation mechanism of drawing frame are achieved by the following specific technical means:

[0007] The application discloses a speed regulating mechanism of a drawing frame, which comprises a connecting seat, a uniform speed shaft is rotatably arranged on the top front side of the connecting seat, a uniform speed pulley is fixedly arranged outside the uniform speed shaft, two groups of speed change shaft supports are fixedly arranged on the top rear side of the connecting seat, a hollow speed change shaft is rotatably arranged on the top middle of the two groups of speed change shaft supports, a speed change pulley is fixedly arranged outside the hollow speed change shaft, four groups of fan-shaped grooves are formed in the speed change pulley, an adjusting plate is arranged in each fan-shaped groove, two groups of sliding blocks are fixedly arranged in each fan-shaped groove, two groups of sliding grooves are formed in the adjusting plate, the sliding grooves are in sliding connection with the sliding blocks in a matched mode, a control piston is fixedly connected to the left side of the hollow speed change shaft, and a tensioner is fixedly arranged on the top right side of the connecting seat.

[0008] Further, an outer mounting bracket is fixedly arranged on the left side of the speed change shaft support, a screw rod A is rotatably arranged in the middle of the outer mounting bracket, a moving rotating seat is slidably arranged in the outer mounting bracket and is in threaded connection with the screw rod A, and the telescopic end of the control piston is rotatably connected with the moving rotating seat.

[0009] Further, a spring guide rod is fixedly arranged in each sliding groove and is in sliding connection with the sliding block, a spring is arranged outside the spring guide rod and is used for retracting the adjusting plate, and a gas telescopic rod is fixedly arranged in the middle of each fan-shaped groove, and a recess capable of containing the gas telescopic rod is formed in the middle of the adjusting plate.

[0010] Further, the control piston is in communication with the four groups of gas telescopic rods.

[0011] Further, a screw rod B is rotatably arranged in the middle of the tensioner, a sliding pulley support is slidably arranged in the middle of the tensioner, the screw rod B is in threaded connection with the sliding pulley support, and a tension pulley is rotatably arranged outside the sliding pulley support.

[0012] Further, an L-shaped rotating frame is fixedly arranged on the front side of the mounting bracket of the uniform speed shaft and on the rear side of the speed change shaft support, an intercepting frame is arranged between the two L-shaped rotating frames, two groups of spring rods are fixedly arranged outside the intercepting frame, the spring rods are in sliding connection with the L-shaped rotating frame after being sleeved with springs and are provided with limiters, and the adjacent surfaces of the two intercepting frames are in inclined surface structures.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] The control piston is arranged, a quick adjusting function is provided, the transmission effect can be adjusted during transmission, control is convenient, the telescopic movement of the control piston is controlled by the moving rotating seat, air is input into the four groups of gas telescopic rods when the control piston is retracted, the four groups of gas telescopic rods are synchronously stretched, the adjusting plates are unfolded outward, the belt can be stretched, operation is convenient, the four groups of adjusting plates can be synchronously adjusted, and the control effect is improved.

[0015] The tensioning wheel is arranged, the tensioning degree is conveniently and stably adjusted, the tensioning degree is changed during the adjustment of the transmission effect, the sliding wheel frame is driven to move by rotating the screw rod B, the position of the tensioning wheel is adjusted, and the belt tensioning degree is adjusted, and the unilateral adjustment stability is high.

[0016] The intercepting frame is arranged, the protection function is provided, if the belt is broken during work, the belt is thrown outwards along inertia, is affected by the transmission effect, generally flies to the front side or the rear side, the intercepting frame can be intercepted, the belt is moved by inertia and is inserted into the intercepting frame, interception clamping is realized, and the transmission safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is the shaft side structure schematic diagram of the utility model.

[0019] Figure 3 It is the side view structure schematic diagram of the utility model.

[0020] Figure 4 It is the overhead structure schematic diagram of the utility model.

[0021] Figure 5 It is the assembly structure schematic diagram of the hollow variable speed shaft of the utility model.

[0022] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0023] 1, connecting seat, 2, uniform speed shaft, 201, uniform speed pulley, 3, variable speed shaft frame, 301, outer mounting frame, 302, screw rod A, 303, moving rotating seat, 4, hollow variable speed shaft, 401, variable speed pulley, 402, fan-shaped slot, 403, sliding block, 404, adjusting plate, 405, sliding groove, 406, spring guide rod, 407, gas telescopic rod, 5, control piston, 6, tensioner, 601, screw rod B, 602, sliding wheel frame, 603, tensioning wheel, 7, L-shaped rotating frame, 701, intercepting frame, 702, spring rod. DETAILED DESCRIPTION

[0024] The embodiment of the utility model is further described in detail in combination with the drawings and examples.

[0025] Example 1:

[0026] As shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 5 As shown in the accompanying drawings:

[0027] This utility model provides a speed regulating mechanism for a drawing frame, including a connecting seat 1. A speed equalizing shaft 2 is rotatably mounted on the top front side of the connecting seat 1, and a speed equalizing pulley 201 is fixedly mounted on the outside of the speed equalizing shaft 2. Two sets of speed change shaft brackets 3 are fixedly mounted on the top rear side of the connecting seat 1, and a hollow speed change shaft 4 is rotatably mounted on the top middle of the two sets of speed change shaft brackets 3. A speed change wheel 401 is fixedly mounted on the outside of the hollow speed change shaft 4. Four sets of fan-shaped grooves 402 are opened on the outside of the speed change wheel 401, and an adjusting plate 404 is provided in each of the fan-shaped grooves 402. Two sets of sliders 403 are fixedly mounted in each of the fan-shaped grooves 402. Two sets of sliding grooves 405 are opened in each of the adjusting plates 404, and the sliding grooves 405 and the sliders 403 are slidably connected. A control piston 5 is fixedly connected to the left side of the hollow speed change shaft 4. A tensioner 6 is fixedly mounted on the top right side of the connecting seat 1.

[0028] Among them, an outer mounting bracket 301 is fixedly installed on the left side of the transmission shaft bracket 3, a lead screw A302 is rotatably installed in the middle of the outer mounting bracket 301, and a movable rotary seat 303 is slidably installed inside the outer mounting bracket 301. The movable rotary seat 303 is threadedly connected to the lead screw A302; the telescopic end of the control piston 5 is rotatably connected to the movable rotary seat 303.

[0029] Each of the slide grooves 405 is fixedly provided with a spring guide rod 406, which is slidably connected to the slider 403. The spring guide rod 406 is fitted with a spring for retracting the adjustment plate 404. Each of the fan-shaped grooves 402 is fixedly provided with a pneumatic telescopic rod 407, and each of the adjustment plates 404 has a groove in the middle that can accommodate the pneumatic telescopic rod 407.

[0030] Among them, the control piston 5 is connected to four sets of pneumatic telescopic rods 407.

[0031] The tensioner 6 has a lead screw B601 rotatably mounted in the middle and a sliding wheel frame 602 slidably mounted in the middle. The lead screw B601 is threadedly connected to the sliding wheel frame 602. The tensioning wheel 603 is rotatably mounted on the outside of the sliding wheel frame 602.

[0032] Among them, L-shaped rotating frames 7 are fixedly installed on the front side of the mounting bracket of the speed-averaging shaft 2 and the rear side of the gear-changing shaft bracket 3, and intercepting frames 701 are installed between the two L-shaped rotating frames 7. Two sets of spring rods 702 are fixedly installed on the outside of the intercepting frames 701. After the spring rods 702 are fitted with springs, they are slidably connected to the L-shaped rotating frames 7 and are set with limits. The adjacent surfaces of the two intercepting frames 701 are all inclined structures.

[0033] like Figures 1-5 As shown, the belt is installed outside the uniform speed shaft 2, the speed change pulley 401 and the tension pulley 603 to produce a belt drive effect, and then it can work.

[0034] When the transmission speed needs to be adjusted, the moving rotating seat 303 is driven to move by rotating the screw rod A 302, the extension and contraction of the control piston 5 is controlled by the moving rotating seat 303, when the control piston 5 is contracted, the air in the control piston 5 is input into the four groups of air telescopic rods 407, the four groups of air telescopic rods 407 are synchronously opened, the adjusting plate 404 is unfolded outward, the belt is opened by the adjusting plate 404, and the transmission speed is increased; during the adjustment, the tension degree is also changed, the sliding wheel frame 602 is driven to move by rotating the screw rod B 601, the position of the tensioning wheel 603 is adjusted, and the tension degree of the belt can be adjusted; reverse adjustment can reduce the speed;

[0035] The uniform speed shaft 2 and the hollow variable speed shaft 4 are not limited in installation mode, can adopt single-side rotary positioning, or double-side rotary positioning, the single-side positioning is convenient for installing the belt, and the double-side positioning needs to disassemble one side hinge seat to install or disassemble the belt.

[0036] Embodiment 2:

[0037] On the basis of embodiment 1, the belt has a service life limit, if the belt breaks during work, the belt is thrown outward following inertia, is affected by the transmission effect, generally flies to the front side or the rear side, can be intercepted through the intercepting frame 701, the belt moves and is inserted into the intercepting frame 701 by inertia, interception clamping is realized, and safety is improved.

[0038] The specific use mode and effect of the embodiment are as follows:

[0039] In the utility model, when in use, the belt is installed outside the uniform speed shaft 2, the variable speed wheel 401 and the tensioning wheel 603, belt transmission effect is generated, and work can be carried out.

[0040] When the transmission speed needs to be adjusted, the moving rotating seat 303 is driven to move by rotating the screw rod A 302, the extension and contraction of the control piston 5 is controlled by the moving rotating seat 303, when the control piston 5 is contracted, the air in the control piston 5 is input into the four groups of air telescopic rods 407, the four groups of air telescopic rods 407 are synchronously opened, the adjusting plate 404 is unfolded outward, the belt is opened by the adjusting plate 404, and the transmission speed is increased; reverse adjustment can reduce the speed.

[0041] During the adjustment, the tension degree is also changed, the sliding wheel frame 602 is driven to move by rotating the screw rod B 601, the position of the tensioning wheel 603 is adjusted, and the tension degree of the belt can be adjusted.

[0042] If the belt breaks during work, the belt is thrown outward following inertia, is affected by the transmission effect, generally flies to the front side or the rear side, can be intercepted through the intercepting frame 701, the belt moves and is inserted into the intercepting frame 701 by inertia, interception clamping is realized, and safety is improved.

Claims

1. A speed regulation mechanism for a drawing frame, characterized in that The application relates to a connecting seat (1), the top front side of the connecting seat (1) is rotationally provided with a uniform-speed shaft (2), the outer side of the uniform-speed shaft (2) is fixedly provided with a uniform-speed pulley (201); the top rear side of the connecting seat (1) is fixedly provided with two groups of variable-speed shaft supports (3), the top middle part of the two groups of variable-speed shaft supports (3) is rotationally provided with a hollow variable-speed shaft (4); the outer side of the hollow variable-speed shaft (4) is fixedly provided with a variable-speed pulley (401), four groups of fan-shaped grooves (402) are formed in the variable-speed pulley (401), and adjusting plates (404) are arranged in the fan-shaped grooves (402); two groups of sliding blocks (403) are fixedly arranged in the fan-shaped grooves (402); two groups of sliding grooves (405) are formed in the adjusting plates (404) and are in sliding connection with the sliding blocks (403); the left side of the hollow variable-speed shaft (4) is fixedly connected with a control piston (5); and the top right side of the connecting seat (1) is fixedly provided with a tensioner (6). The left side of the variable-speed shaft support (3) is fixedly provided with an outer mounting bracket (301), the middle part of the outer mounting bracket (301) is rotationally provided with a lead screw A (302), and a moving rotating seat (303) is slidingly arranged in the outer mounting bracket (301) and is in threaded connection with the lead screw A (302); and the telescopic end of the control piston (5) is rotationally connected with the moving rotating seat (303).

2. The speed regulating mechanism of drawing frame as claimed in claim 1 wherein: Spring guide rods (406) are fixedly arranged in the sliding grooves (405) and are in sliding connection with the sliding blocks (403), springs are arranged outside the spring guide rods (406) and are used for retracting the adjusting plates (404); the middle parts of the fan-shaped grooves (402) are fixedly provided with air telescopic rods (407), and recesses capable of containing the air telescopic rods (407) are formed in the middle parts of the adjusting plates (404).

3. The speed regulating mechanism of the drawing frame according to claim 1, characterized in that: The control piston (5) is in communication with the four groups of air telescopic rods (407).

4. The speed regulating mechanism of the drawing frame according to claim 3, characterized in that: The middle part of the tensioner (6) is rotationally provided with a lead screw B (601), the middle part of the tensioner (6) is slidingly provided with a sliding pulley bracket (602), the lead screw B (601) is in threaded connection with the sliding pulley bracket (602); and the tensioner (6) is rotationally provided with a tension pulley (603) outside the sliding pulley bracket (602).

5. The speed regulating mechanism of the drawing frame as claimed in claim 1, characterized in that: L-shaped rotating frames (7) are fixedly arranged on the mounting bracket front side of the uniform-speed shaft (2) and the rear side of the variable-speed shaft support (3), intercepting frames (701) are arranged between the two L-shaped rotating frames (7); two groups of spring rods (702) are fixedly arranged outside the intercepting frames (701), the spring rods (702) are in sliding connection with the L-shaped rotating frames (7) after being sleeved with springs and are provided with limiters; the adjacent surfaces of the two intercepting frames (701) are in inclined surface structures.

6. The speed regulating mechanism of an openender as defined in claim 1, wherein: ​

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