CN212558816U

CN212558816U - Pneumatic tube traction device

Info

Publication number: CN212558816U
Application number: CN202020738974.0U
Authority: CN
Inventors: 何锡磊
Original assignee: Wuxi Xikedi Pneumatic Components Co ltd
Current assignee: Wuxi Xikedi Pneumatic Components Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-02-19
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses a pneumatic tube draw gear relates to the technical field of pneumatic tube production, the utility model discloses an operation method is at first opened the motor, and the motor drives the rim plate and rotates, and the rim plate drives the chain motion, and the chain ring of chain can once block into in the recess of rim plate, drives the sprocket rotation after the chain motion, and the sprocket rotates and drives the mount and rises, and the first telescopic link of mount bottom can follow the inside rising of second telescopic link, reaches after the take the altitude, turn off the motor can, when descending, with motor reverse motion: the lifting adjustment is completed, and the technical problem that the pneumatic tube traction device cannot lift in the prior art is solved.

Description

Pneumatic tube traction device

Technical Field

The utility model relates to a trachea technical field has especially related to a pneumatic tube draw gear.

Background

The pneumatic tube traction device is one of devices for manufacturing the pneumatic tube, an air tube manufactured by an extruder is cooled by cold water and extends to the traction device, and the air tube is pulled out by the traction device.

Among the prior art, pneumatic tube draw gear can't reach the lift, can not with the high cooperation of other equipment, if other equipment break down and change one, if plastics draw gear highly low or high, can influence pneumatic tube's traction effect and pneumatic tube still is in the curved state, influences the shaping.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a trachea cooling conveyor to solve the technical problem that air pipe draw gear can't go up and down among the prior art.

A pneumatic tube traction device comprises a platform, a driving wheel and a lifting frame, wherein the platform is provided with a motor, the motor is provided with a wheel disc, the driving wheel is arranged above the platform and comprises a first driving wheel and a second driving wheel, the first driving wheel and the second driving wheel are arranged up and down, two ends of two sides of the first driving wheel and the second driving wheel are respectively provided with a retaining ring, a fixing frame is arranged outside the first driving wheel and the second driving wheel and is inserted into the retaining ring and fixed with the retaining ring, the bottom of the fixing frame is provided with a plurality of guide pillars, the plurality of guide pillars comprise a first telescopic rod and a second telescopic rod, one end of the first telescopic rod is fixed with the fixing frame, the other end of the first telescopic rod is inserted into the second telescopic rod, the second telescopic rod is fixed with the platform, the top of the fixing frame is provided with a connecting rod, the crane includes first fixed beam and the fixed roof beam of second, first fixed beam and the fixed roof beam of second are first higher than the connecting rod of mount, first fixed beam and the fixed another of the fixed roof beam of second are connected with the platform, first fixed beam and the fixed roof beam of second are equipped with the anchorage bar directly, the cover is equipped with the sprocket on the anchorage bar, be equipped with the bearing between sprocket and the anchorage bar, the sprocket both sides are equipped with the fixed block, the fixed block is connected with the anchorage bar, be equipped with the chain on the connecting rod at mount top, the chain cover is established at the chain wheel, the chain is directly followed and is extended to on the rim plate of motor on the sprocket, the chain is connected with the rim plate directly, be equipped with a plurality of recesses on the rim plate outer wall.

Furthermore, one side of the first driving wheel is provided with a cleaning device which comprises a sliding rod, one end of the sliding rod is provided with a cleaning sleeve which is arranged on the front surfaces of the first driving wheel and the second driving wheel, a cleaning cloth is arranged in the cleaning sleeve, a moving device is arranged on the sliding rod, an auxiliary groove is arranged on one side of the first driving wheel, a clamping groove is arranged in the auxiliary groove, the moving device comprises a moving block, the moving block is connected with a sliding rod of the cleaning device, a slot is arranged on the moving block, the moving block is arranged in the auxiliary groove, and the slot on the moving block is inserted in the slot in the auxiliary slot, one side of the moving block is provided with an extending block, the extension block passes through the bolt fastening with first drive wheel outer wall, still be equipped with a plurality of mounting holes on the first drive wheel outer wall, it is a plurality of the mounting hole is horizontal setting side by side.

Further, be equipped with the drawbar on the slide bar, the drawbar includes loop bar and inserted bar, inserted bar one end is inserted and is established in the loop bar, another and the slide bar of inserted bar are connected, the loop bar directly is equipped with the layer board, the loop bar outer wall is equipped with the disassembly hole, be equipped with the internal thread on the disassembly hole, it is equipped with the screw rod to insert on the disassembly hole, the screw rod directly supports to establish on the inserted bar outer wall, another overhead carousel that is equipped with of screw rod.

Further, one end of the second driving wheel is provided with a limiting part, the limiting part comprises an auxiliary rod, a limiting wheel and a limiting block, one end of the auxiliary rod is connected with one side of the second driving wheel, the limiting wheel is sleeved at the other end of the auxiliary rod, the limiting block is arranged below the limiting wheel, the top of the limiting block is provided with an arc groove matched with the outer wall of the pneumatic tube, a fixing strip is arranged between the limiting block and the limiting wheel, the fixing strip comprises two fixing strips and two fixing strips are arranged on two sides of the limiting block and the limiting wheel respectively, and two ends of the two fixing strips are fixed with the limiting block and the limiting wheel respectively.

Furthermore, universal wheels are arranged at the bottom of the platform.

Compared with the prior art, the utility model has the advantages that;

one of the two, the utility model discloses a can carry out elevating movement, the utility model discloses an operating method at first opens the motor, and the motor drives the rim plate and rotates, and the rim plate drives the chain motion, and the chain ring of chain can once block into in the recess of rim plate, drives the sprocket rotation after the chain motion, and the sprocket rotates and drives the mount and rises, and the first telescopic link of mount bottom can follow the inside rising of second telescopic link, reaches after the take the altitude, turn off the motor can, when descending, with motor reversal motion: the elevation adjustment is completed.

Secondly, a cleaning device is arranged on one side of the first driving wheel and comprises a sliding rod, a cleaning sleeve is arranged at one end of the sliding rod and is arranged on the front sides of the first driving wheel and the second driving wheel, cleaning cloth is arranged inside the cleaning sleeve, water is left on the pneumatic tube after the pneumatic tube is cooled, the water on the pneumatic tube can be wiped after the pneumatic tube passes through the cleaning cloth, the situation that the pneumatic tube slides due to the water left on the pneumatic tube when the first driving wheel and the second driving wheel drag the pneumatic tube is avoided, in order to enable the cleaning device to adjust the proper front and back positions, a moving device is additionally arranged on the first driving wheel, an auxiliary groove is arranged on one side of the first driving wheel, a clamping groove is formed in the auxiliary groove, the moving device comprises a moving block, the moving block is connected with the sliding rod of the cleaning device, and an inserting groove is formed in the moving block, the movable block is arranged in the auxiliary groove, a slot in the movable block is inserted into a slot in the auxiliary groove, one face of the movable block is provided with an extension block, the extension block is fixed to the outer wall of the first driving wheel through a bolt, the outer wall of the first driving wheel is further provided with a plurality of mounting holes, the mounting holes are arranged in parallel and transversely, the extension block is separated from the outer wall of the first driving wheel through dismounting of the bolt, then the movable block is pushed, and after a proper position is found, the extension block is fixed to the closest mounting hole in the outer wall of the first driving wheel through the bolt.

Thirdly, a dragging rod is arranged on the sliding rod, the sliding rod is of a telescopic structure and comprises a loop bar and an insertion rod, one end of the insertion rod is inserted into the loop bar, the other end of the insertion rod is connected with the sliding rod, a supporting plate is arranged at one end of the loop bar, the pneumatic tube can be directly erected on the supporting plate after being cooled, after the pneumatic tube is prevented from being cooled, the distance between the pneumatic tube and a first driving wheel and a second driving wheel can enable the pneumatic tube to be in a bending state, the forming of the pneumatic tube is influenced, a dismounting hole is formed in the outer wall of the loop bar, an internal thread is formed in the dismounting hole, a screw rod is inserted into the dismounting hole, one end of the screw rod abuts against the outer wall of the insertion rod, a turntable is arranged at the other end of the screw rod, the tightness is adjusted through the matching of the external thread of the screw rod and the internal thread of the dismounting hole, during adjustment, the, the screw rod can be gradually loosened and detached, the loop bar is pushed towards the direction of the inserted bar, the turntable is instantly rotated clockwise after the loop bar is adjusted to a proper position, and the screw rod is tightly propped against the outer wall of the inserted bar.

Fourthly, one end of the second driving wheel is provided with a limiting part, the limiting part comprises an auxiliary rod, a limiting wheel and a limiting block, one end of the auxiliary rod is connected with one side of the second driving wheel, the limiting wheel is sleeved at the other end of the auxiliary rod, the limiting block is arranged below the limiting wheel, the top of the limiting block is provided with an arc groove matched with the outer wall of the pneumatic tube, a fixing strip is arranged between the limiting block and the limiting wheel, the fixing strips comprise two fixing strips which are respectively arranged at two sides of the limiting block and the limiting wheel, and two ends of the two fixing strips are respectively fixed with the limiting block and the limiting wheel, when the pneumatic tube extends out from the space between the first driving wheel and the second driving wheel, the pneumatic tube can be inserted into the arc groove of the limiting block and slide along the arc groove, the limiting wheel prevents the pneumatic tube from being extruded by the first driving wheel and the second driving wheel and then from tilting, and the limiting wheel and the limiting block can prevent the pneumatic tube from bending, the pneumatic tube can be kept in a straight running state.

And fifthly, universal wheels are arranged at the bottom of the platform and are convenient to move through the universal wheels.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a first-view perspective structure of the present invention;

fig. 2 is a schematic view of a second perspective three-dimensional structure of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the point B in FIG. 2 according to the present invention;

fig. 5 is a schematic view of a third perspective three-dimensional structure of the present invention;

FIG. 6 is an enlarged view of the point C of FIG. 5 according to the present invention;

fig. 7 is a front view of the present invention;

reference numerals: platform 1, drive wheel 2, crane 3, motor 11, rim plate 111, first drive wheel 21, second drive wheel 22, buckle 4, mount 5, guide pillar 51, first telescopic link 511, second telescopic link 512, connecting rod 52, first fixed beam 31, second fixed beam 32, anchorage bar 6, sprocket 61, fixed block 62, chain 521, cleaning device 7, slide bar 71, cleaning sleeve 711, mobile device 8, auxiliary tank 211, draw-in groove 2111, movable block 81, mounting hole 212, tow bar 712, layer board 7121, loop bar 7122, inserted bar 7123, carousel 9, locating part 221, auxiliary bar 2211, spacing wheel 2212, spacing block 2213, fixed strip 10, universal wheel 12.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A pneumatic tube traction device comprises a platform 1, a driving wheel 2 and a lifting frame 3, wherein the driving wheel 2 is arranged above the platform 1, the driving wheel 2 comprises a first driving wheel 21 and a second driving wheel 22, the first driving wheel 21 and the second driving wheel 22 are arranged up and down, one end of a cooled pneumatic tube penetrates through the space between the two driving wheels 2 and rotates towards two directions respectively to pull the pneumatic tube to advance through the two driving wheels 2, two ends of two sides of the first driving wheel 21 and the second driving wheel 22 are respectively provided with a retaining ring 4, a fixing frame 5 is arranged outside the first driving wheel 21 and the second driving wheel 22, the fixing frame 5 is inserted into the retaining ring 4 and fixed with the retaining ring 4, the bottom of the fixing frame 5 is provided with a plurality of guide posts 51, the plurality of guide posts 51 comprise a first telescopic rod 511 and a second telescopic rod 512, one end of the first telescopic rod 511 is fixed with the fixing frame 5, the other end of the first telescopic rod 511 is inserted into the second telescopic rod 512, the second telescopic rod 512 is fixed with the platform 1, the top of the fixing frame 5 is provided with a connecting rod 52, the lifting frame 3 is arranged outside the platform 1, the lifting frame 3 comprises a first fixed beam 31 and a second fixed beam 32, one end of the first fixed beam 31 and one end of the second fixed beam 32 are higher than the connecting rod 52 of the fixing frame 5, the other end of the first fixed beam 31 and the other end of the second fixed beam 32 are connected with the platform 1, one end of the first fixed beam 31 and one end of the second fixed beam 32 are provided with a fastening rod 6, the fastening rod 6 is sleeved with a chain wheel 61, a bearing is arranged between the chain wheel 61 and the fastening rod 6, the chain wheel 61 is rotated through the bearing, the two sides of the chain wheel 61 are provided with fixed blocks 62, the fixed blocks 62 are connected with the fastening rod 6, the chain wheel 61, be equipped with chain 521 on the connecting rod 52 at the top of mount 5, chain 521 cover is established on sprocket 61, be equipped with motor 11 on the platform 1, be equipped with rim plate 111 on the motor 11, chain 521 extends to rim plate 111 from sprocket 61 on one end, chain 521 one end is connected with rim plate 111, be equipped with a plurality of recesses on the rim plate 111 outer wall, including the chain link winding of chain 521 through the recess, make rim plate 111 can be more firm pin chain 521.

The utility model discloses an operation method is at first opened motor 11, and motor 11 drives rim plate 111 and rotates, and rim plate 111 drives the motion of chain 521, and the chain link of chain 521 can once block into in the recess of rim plate 111, and chain 521 drives sprocket 61 after the motion and rotates, and sprocket 61 rotates and drives mount 5 and rises, and the first telescopic link 511 of mount 5 bottom can follow inside the rising of second telescopic link 512, reaches after the take the altitude, turn off motor 11 can, when descending, with motor 11 reverse motion: the elevation adjustment is completed.

Preferably, a cleaning device 7 is arranged on one side of the first driving wheel 21, the cleaning device 7 comprises a sliding rod 71, a cleaning sleeve 711 is arranged at one end of the sliding rod 71, the cleaning sleeve 711 is arranged on the front surfaces of the first driving wheel 21 and the second driving wheel 22, a cleaning cloth is arranged inside the cleaning sleeve 711, water is left on the pneumatic tube after the pneumatic tube is cooled, the water on the pneumatic tube is wiped after the pneumatic tube passes through the cleaning cloth, the sliding of the pneumatic tube caused by the water left on the pneumatic tube when the first driving wheel 21 and the second driving wheel 22 pull the pneumatic tube is prevented, in order to enable the cleaning device 7 to adjust a proper front-back position, a moving device 8 is additionally arranged on the first driving wheel 21, an auxiliary groove 211 is arranged on one side of the first driving wheel 21, a clamping groove 2111 is arranged in the auxiliary groove 211, the moving device 8 comprises a moving block 81, and the moving block 81 is connected with the sliding rod 71 of the cleaning device 7, the movable block 81 is provided with a slot, the movable block 81 is arranged in the auxiliary groove 211, the slot in the movable block 81 is inserted into a slot 2111 in the auxiliary groove 211, one side of the movable block 81 is provided with an extension block, the extension block is fixed with the outer wall of the first driving wheel 21 through a bolt, the outer wall of the first driving wheel 21 is further provided with a plurality of mounting holes 212, the mounting holes 212 are arranged in parallel and transversely, the extension block is separated from the outer wall of the first driving wheel 21 through dismounting the bolt, then the movable block 81 is pushed, and after a proper position is found, the extension block and the closest mounting hole 212 on the outer wall of the first driving wheel 21 are fixed through the bolt.

Preferably, be equipped with the tow bar 712 on the slide bar 71, the slide bar 71 is extending structure, the tow bar 712 includes loop bar 7122 and inserted bar 7123, inserted bar 7123 is directly inserted and is established in loop bar 7122, inserted bar 7123 another is connected with slide bar 71, loop bar 7122 is equipped with layer board 7121 directly, can directly set up on layer board 7121 after the pneumatic tube cooling, prevents that the pneumatic tube from cooling out after, the distance between pneumatic tube and first drive wheel 21 and the second drive wheel 22 can let the pneumatic tube be the bending state, influences the shaping of pneumatic tube, loop bar 7122 outer wall is equipped with the disassembly hole, be equipped with the internal thread on the disassembly hole, the last screw rod that has inserted of disassembly hole, the screw rod supports at one end and establishes on inserted bar 7123 outer wall, be equipped with carousel 9 on the screw rod another end, adjust the elasticity through the external thread of screw rod and the internal thread cooperation in disassembly hole, during the regulation, counter-clockwise turning 9 at first, the rotary table 9 rotates and drives the screw to rotate, the screw is gradually loosened and detached, the loop rod 7122 is pushed towards the inserted link 7123, and after the loop rod is adjusted to a proper position, the rotary table 9 is instantly rotated clockwise, so that the screw is tightly abutted against the outer wall of the inserted link 7123.

Preferably, one end of the second driving wheel 22 is provided with a limiting member 221, the limiting member 221 includes an auxiliary rod 2211, a limiting wheel 2212 and a limiting block 2213, one end of the auxiliary rod 2211 is connected with one side of the second driving wheel 22, the limiting wheel 2212 is sleeved on the other end of the auxiliary rod 2211, the limiting block 2213 is disposed below the limiting wheel 2212, an arc groove corresponding to the outer wall of the pneumatic tube is disposed at the top of the limiting block 2213, a fixing strip 10 is disposed between the limiting block 2213 and the limiting wheel 2212, the fixing strip 10 includes two fixing strips 10, the two fixing strips 10 are disposed at two sides of the limiting block 2213 and the limiting wheel 2212, and two ends of the two fixing strips 10 are respectively fixed to the limiting block 2213 and the limiting wheel 2212, after the pneumatic tube extends from between the first driving wheel 21 and the second driving wheel 22, the pneumatic tube is inserted into the arc groove of the limiting block 2213 and slides along the arc groove, the limiting wheel 2212 prevents the pneumatic tube from being tilted by the first driving wheel 22121 and the second, and the stopper 2212 and the stopper 2213 can prevent the pneumatic tube from being bent during the extrusion of the first and

second driving wheels

21 and 22, and the pneumatic tube can be maintained in a straight state.

Preferably, the bottom of the platform 1 is provided with universal wheels 12, and the universal wheels 12 are convenient to move.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A pneumatic tube traction device is characterized by comprising a platform (1), a driving wheel (2) and a lifting frame (3), wherein a motor (11) is arranged on the platform (1), a wheel disc (111) is arranged on the motor (11), the driving wheel (2) is arranged above the platform (1), the driving wheel (2) comprises a first driving wheel (21) and a second driving wheel (22), the first driving wheel (21) and the second driving wheel (22) are arranged up and down, two ends of two sides of the first driving wheel (21) and the second driving wheel (22) are respectively provided with a retaining ring (4), a fixing frame (5) is arranged outside the first driving wheel (21) and the second driving wheel (22), the fixing frame (5) is inserted into the retaining ring (4) and fixed with the retaining ring (4), a plurality of guide posts (51) are arranged at the bottom of the fixing frame (5), and the plurality of guide posts (51) comprise a first telescopic rod (511) and a second telescopic rod (512), one end of the first telescopic rod (511) is fixed with the fixing frame (5), the other end of the first telescopic rod (511) is inserted into the second telescopic rod (512), the second telescopic rod (512) is fixed with the platform (1), the top of the fixing frame (5) is provided with a connecting rod (52), the lifting frame (3) is arranged outside the platform (1), the lifting frame (3) comprises a first fixed beam (31) and a second fixed beam (32), one ends of the first fixed beam (31) and the second fixed beam (32) are higher than the connecting rod (52) of the fixing frame (5), the other ends of the first fixed beam (31) and the second fixed beam (32) are connected with the platform (1), one ends of the first fixed beam (31) and the second fixed beam (32) are provided with a fastening rod (6), the fastening rod (6) is sleeved with a chain wheel (61), and a bearing is arranged between the chain wheel (61) and the fastening rod (6), sprocket (61) both sides are equipped with fixed block (62), fixed block (62) are connected with anchorage bar (6), be equipped with chain (521) on connecting rod (52) at mount (5) top, chain (521) cover is established on sprocket (61), chain (521) one end extends to on rim plate (111) of motor (11) from sprocket (61), chain (521) one end is connected with rim plate (111), be equipped with a plurality of recesses on rim plate (111) outer wall.

2. The pneumatic tube traction device as claimed in claim 1, wherein a cleaning device (7) is disposed on one side of the first driving wheel (21), the cleaning device (7) comprises a sliding rod (71), a cleaning sleeve (711) is disposed at one end of the sliding rod (71), the cleaning sleeve (711) is disposed on the front surfaces of the first driving wheel (21) and the second driving wheel (22), cleaning cloth is disposed inside the cleaning sleeve (711), a moving device (8) is disposed on the sliding rod (71), an auxiliary groove (211) is disposed on one side of the first driving wheel (21), a clamping groove (2111) is disposed in the auxiliary groove (211), the moving device (8) comprises a moving block (81), the moving block (81) is connected with the sliding rod (71) of the cleaning device (7), a clamping groove is disposed on the moving block (81), and the moving block (81) is disposed in the auxiliary groove (211), and the slot on the moving block (81) is inserted into the slot (2111) in the auxiliary slot (211), one surface of the moving block (81) is provided with an extension block, the extension block is fixed with the outer wall of the first driving wheel (21) through a bolt, the outer wall of the first driving wheel (21) is also provided with a plurality of mounting holes (212), and the mounting holes (212) are arranged in parallel and transversely.

3. A pneumatic tube traction device as claimed in claim 2, wherein a drag rod (712) is provided on the sliding rod (71), the drag rod (712) comprises a loop bar (7122) and an insert bar (7123), one end of the insert bar (7123) is inserted into the loop bar (7122), the other end of the insert bar (7123) is connected with the sliding rod (71), one end of the loop bar (7122) is provided with a supporting plate (7121), the outer wall of the loop bar (7122) is provided with a dismounting hole, an internal thread is provided on the dismounting hole, a screw rod is inserted into the dismounting hole, one end of the screw rod abuts against the outer wall of the insert bar (7123), and a rotary table (9) is provided on the other end of the screw rod.

4. A pneumatic tube traction device as claimed in claim 1, wherein a stop (221) is provided at one end of the second drive wheel (22), the limiting piece (221) comprises an auxiliary rod (2211), a limiting wheel (2212) and a limiting piece (2213), one end of the auxiliary rod (2211) is connected with one side of the second driving wheel (22), the limiting wheel (2212) is sleeved at the other end of the auxiliary rod (2211), the limiting block (2213) is arranged below the limiting wheel (2212), the top of the limiting block (2213) is provided with an arc groove matched with the outer wall of the pneumatic tube, a fixing strip (10) is arranged between the limiting block (2213) and the limiting wheel (2212), the number of the fixing strips (10) is two, the two fixing strips (10) are respectively arranged at the two sides of the limiting block (2213) and the limiting wheel (2212), and the two ends of the two fixing strips (10) are respectively fixed with the limiting block (2213) and the limiting wheel (2212).

5. A pneumatic tube pulling device as claimed in claim 1, wherein the platform (1) is provided with universal wheels (12) at its bottom.