CN210435631U

CN210435631U - Net puller

Info

Publication number: CN210435631U
Application number: CN201921168760.8U
Authority: CN
Inventors: 钟瑞洲; 成思源; 杨雪荣; 刘吉安
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-01
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a net puller, including frame (2), install in draw net device (3) in frame (2) and with draw drive arrangement (1) that net device (3) are connected, draw net device (3) include with drive arrangement (1) connect and install the initiative pivot part (3-3) (3-2) of a plurality of sprocket on it, its sprocket pass through draw net chain (3-4) with driven pivot part (3-6) that initiative pivot part (3-3) (3-2) are connected, install in draw net chain (3-4) set for a plurality of clamping mechanism (3-7) of protruding link joint. The net puller is convenient to use and adjust, firm in clamping and free of sliding, noise can be greatly reduced, equipment floor area is reduced, and equipment working efficiency is improved.

Description

Net puller

Technical Field

The utility model relates to a reinforcing bar net welding technology field especially relates to a net puller.

Background

The reinforcing mesh is widely applied to the fields of industry, buildings and the like, such as concrete pavement, bridge deck pavement, airport runway pavement and the like. When the reinforcing mesh is automatically welded, one transverse rib is welded on the longitudinal rib, and when one transverse rib is welded, the welding procedure needs to be stopped and the mesh needs to be conveyed out of the welding position to vacate the position for the welding of the next transverse rib, so that the mesh continuously moves forwards along with the welding.

In the prior art, a linear reciprocating type net pulling device is adopted, after welding of one transverse rib, a hook of the net pulling device hooks the transverse rib and a net sheet is driven by a driving mechanism to move to a set position along a straight line; then the net pulling device returns to the initial position again, and a new welding program starts; repeating the steps, and finally finishing the net pulling work.

Because the process that the net pulling device returns to the initial position is an idle stroke, unnecessary welding procedure stop time is caused, the defects of low equipment production efficiency, large occupied space and large accumulated error exist, and the method is difficult to adapt to the processing of the steel bar net with large wire hardness; the noise generated by friction between the mesh and the supporting table surface in the moving process is larger; the hook structure is inconvenient to adjust, and when the width of the net sheet or the size of the meshes is changed, the position of the hook structure must be adjusted.

To sum up, how to effectively solve the problems of inconvenient use and adjustment, high noise, low working efficiency and the like of the net pulling device is a problem which needs to be solved urgently by technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a net puller, this net puller use and adjust the convenience, the centre gripping firmly does not have the slip, can the greatly reduced noise, reduces equipment area, improve equipment work efficiency.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a net puller, including the frame, install in net puller in the frame and with the drive arrangement that the net puller is connected, the net puller include with drive arrangement connect and install the initiative pivot part of a plurality of sprocket on it, its sprocket pass through the net pulling chain with driven pivot part that the initiative pivot part is connected, install in a plurality of clamping mechanism of protruding link joint is set for to the net pulling chain.

Preferably, the protruding chain plate of the clamping mechanism is L-shaped, sliding grooves are formed in two sides of a horizontal plate of the protruding chain plate, the mounting hole of the clamping mechanism is connected with the sliding grooves through a bolt, and the bolt can move in the sliding grooves.

Preferably, clamping mechanism is including having the mounting panel of mounting hole, being fixed in terminal surface and centre have under the mounting panel well cavity and both sides have the tight main part of clamp that link up the groove, install respectively in both sides link up two clamp plates in groove, install respectively two spring caps, one end that press from both sides tight main part both sides with press from both sides the piece and connect and the other end with the first spring that the spring cap is connected, set up in cavity intracavity and upper end with press from both sides the T type pole that tight main part is connected, suit in second spring on the T type pole montant, horizontal muscle clamp in two press from both sides between the piece and the upper end top in on the T type pole.

Preferably, the clamping main body and the spring cover are both provided with transverse adjusting grooves, the clamping sheet is provided with through holes matched with the transverse adjusting grooves, clamping rotating shafts penetrate through the through holes and the transverse adjusting grooves, and the clamping rotating shafts can transversely move in the transverse adjusting grooves.

Preferably, the outer side of the clamping main body is provided with an adjusting rod, the spring cover is provided with an adjusting hole matched with the adjusting rod, and the adjusting rod and the adjusting hole are fastened through a nut.

Preferably, the machine frame comprises a lower machine frame, an upper machine frame which is nested and matched with the lower machine frame and can be adjusted in a telescopic mode, and a plurality of rollers which are arranged on the upper machine frame through rollers.

Preferably, the surface of the roller is provided with a plurality of circular grooves with the size corresponding to the diameter of the longitudinal ribs and the distance corresponding to the distance between two adjacent longitudinal ribs.

Preferably, the upper frame is provided with a longitudinal slot in the vertical direction, and the roller can float up and down in the longitudinal slot and is fixed through a bolt.

Preferably, the driving rotating shaft part and the driven rotating shaft part comprise rotating shaft bodies, rolling bearings are mounted at two ends of the rotating shaft bodies, the rotating shaft bodies are mounted on the upper rack through bearing seats, and a plurality of mounting adjusting shafts are sleeved on the rotating shaft bodies, the net pulling chain wheels are mounted on the mounting adjusting shafts, and the mounting adjusting shafts can slide left and right on the rotating shaft bodies.

Preferably, the rotating shaft body is a spline shaft, the installation adjusting shaft is provided with a spline groove matched with a spline of the spline shaft, and the installation adjusting shaft is connected with the rotating shaft body through a set screw.

The utility model provides a net puller, including the frame, draw net device and drive arrangement to install in the frame, drive arrangement with draw the net device to be connected, the drive draws the work of net device to draw the net. Preferably, the driving device is a stepping motor, the stepping motor is connected with the net pulling device through a coupler, and the angular displacement is controlled by controlling the number of pulses, so that the moving position of the net pulling device is accurately positioned; the rotating speed and the rotating acceleration of the motor are controlled by controlling the pulse frequency, so that the speed is convenient to regulate. The net pulling device is an important part of the net pulling, the net pulling device comprises a driving rotating shaft part, a driven rotating shaft part and a plurality of clamping mechanisms, the driving rotating shaft part is connected with a driving device, a plurality of chain wheels are arranged on the driving rotating shaft part and the driven rotating shaft part, and the chain wheels are connected through a net pulling chain to realize chain wheel-chain transmission. The plurality of clamping mechanisms are arranged on the set protruding chain plates of the net pulling chain, the clamping mechanisms are arranged on the net pulling chain and move along with the net pulling chain, the net pulling device has no idle stroke, the downtime of a welding procedure is reduced, and the production efficiency is improved; the structure is compact, and the occupied space is small; the clamping is firm without sliding, the accumulated error is small, and the net pulling distance is accurate.

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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 structural view of a net puller according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a frame;

FIG. 3 is a schematic structural diagram of a net pulling device;

FIG. 4 is a schematic structural view of the active spindle unit;

FIG. 5 is a schematic view of the construction of the driven spindle unit;

FIG. 6 is a schematic view of the structure for mounting the adjustment shaft;

FIG. 7 is a schematic structural view of a hauling chain;

FIG. 8 is a schematic view of the clamping mechanism;

FIG. 9 is a schematic view of the structure of the clamping body;

FIG. 10 is a schematic view of the structure of the grip tab.

The drawings are numbered as follows:

the device comprises a driving device 1, a rack 2, a net pulling device 3, a net piece 4, transverse ribs 4-1, longitudinal ribs 4-2, a lower rack 2-1, supporting casters 2-1-1, an upper rack 2-2, a roller 2-2-1, stop bolts 2-3, a bearing seat 3-1, a driving rotating shaft part 3-2, a chain wheel 3-3, a net pulling chain 3-4, set screws 3-5, a driven rotating shaft part 3-6, a clamping mechanism 3-7, a rolling bearing 3-2-1, an installation adjusting shaft 3-2-2, a driving rotating shaft body 3-2-3, a driven rotating shaft body 3-6-1, a spring cover 3-7-1, a clamping rotating shaft 3-7-2, an installation plate 3-7-3, The clamping device comprises a clamping main body 3-7-4, a first spring 3-7-5, a T-shaped rod 3-7-6, a second spring 3-7-7 and a clamping piece 3-7-8.

Detailed Description

The core of the utility model is to provide a net puller, this net puller uses and adjusts the convenience, and the centre gripping firmly does not have the slip, can greatly reduced noise, reduces equipment area, improve equipment work efficiency.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1 to 10, fig. 1 is a schematic structural diagram of a net puller according to an embodiment of the present invention; FIG. 2 is a schematic structural view of a frame; FIG. 3 is a schematic structural diagram of a net pulling device; FIG. 4 is a schematic structural view of the active spindle unit; FIG. 5 is a schematic view of the construction of the driven spindle unit; FIG. 6 is a schematic view of the structure for mounting the adjustment shaft; FIG. 7 is a schematic structural view of a hauling chain; FIG. 8 is a schematic view of the clamping mechanism; FIG. 9 is a schematic view of the structure of the clamping body; FIG. 10 is a schematic view of the structure of the grip tab.

In a specific embodiment, the utility model provides a net puller, including frame 2, install the net puller 3 in frame 2 and with the drive arrangement 1 that the net puller 3 is connected, net puller 3 includes the initiative pivot part 3-33-2 who is connected with drive arrangement 1 and installs a plurality of sprocket on it, driven pivot part 3-6 that its sprocket passes through net pulling chain 3-4 and is connected with initiative pivot part 3-33-2, install in a plurality of clamping mechanism 3-7 that net pulling chain 3-4 set for protruding link joint.

In the structure, the net puller comprises a rack 2, a net pulling device 3 and a driving device 1, the net pulling device 3 and the driving device 1 are installed on the rack 2, the driving device 1 is connected with the net pulling device 3, and the net pulling device 3 is driven to work to pull nets. Preferably, the driving device 1 is a stepping motor, the stepping motor is connected with the net pulling device 3 through a coupler, and the angular displacement is controlled by controlling the number of pulses, so that the moving position of the net pulling device 3 is accurately positioned; the rotating speed and the rotating acceleration of the motor are controlled by controlling the pulse frequency, so that the speed is convenient to regulate.

The working process of the net puller is as follows: the welding machine welds a transverse bar 4-1 with a little short length on the longitudinal bar 4-2, and the welding procedure is stopped after welding one bar. The driving device 1 starts to drive the net pulling device 3 to work, so that the net piece 4 is driven to integrally move for a certain distance. And after the net sheet 4 reaches a preset position, the driving device 1 and the net pulling device 3 stop working, and the welding machine is used for welding the next transverse rib 4-1. And repeating the process until all the transverse ribs 4-1 are welded. After the welding of one net sheet 4 is finished, the net pulling device 3 continues to work for a period of time until the last welded transverse rib 4-1 on the net sheet 4 is separated from the net pulling device 3. The welding and drawing work of the next mesh sheet 4 is ready to start.

From the above characteristics, it can be known that the net pulling device 3 is an important part of the net pulling, the net pulling device 3 comprises a driving rotating shaft part 3-33-2, a driven rotating shaft part 3-6 and a plurality of clamping mechanisms 3-7, the driving rotating shaft part 3-33-2 is connected with the driving device 1, a plurality of chain wheels are respectively arranged on the driving rotating shaft part 3-33-2 and the driven rotating shaft part 3-6, and the chain wheels of the driving rotating shaft part 3-33-2 and the driven rotating shaft part 3-6 are connected through the net pulling chain 3-4 to realize chain wheel-chain transmission.

The plurality of clamping mechanisms 3-7 are arranged on the set protruding chain plates of the net pulling chain 3-4, the clamping mechanisms 3-7 are arranged on the net pulling chain 3-4 and move along with the net pulling chain 3-4, the net pulling device 3 has no idle stroke, the downtime of a welding procedure is reduced, and the production efficiency is improved; the structure is compact, and the occupied space is small; the clamping is firm without sliding, the accumulated error is small, and the net pulling distance is accurate.

On the basis of the above specific embodiments, the mounting positions of the clamping mechanisms 3 to 7 on the net pulling chains 3 to 4 are adjustable, the adjustment is convenient, when the specifications of the net sheets 4 are changed, the clamping mechanisms can be adapted by adjusting the mounting positions and the number of the net sheets, and the adaptability of the equipment is greatly improved

Specifically, the raised link plates of the clamping mechanisms 3-7 are L-shaped, one side of each raised link plate is a chain connecting surface, and the other side of each raised link plate is a connecting surface of the clamping mechanism 3-7. The connecting surface of the clamping mechanism 3-7 is a horizontal plate, the two sides of the clamping mechanism are respectively provided with a sliding chute, the sliding chutes are arranged along the direction of the hauling chain 3-4, and the sliding chutes can be provided with open slots at the end parts and can also be provided with closed inner slots at the end parts. The mounting plate 3-7-3 of the clamping mechanism 3-7 is provided with a mounting hole, a bolt penetrates through the mounting hole and the chute, the tail end of the bolt is fastened through a nut, and the bolt can move in the chute, so that the mounting position of the clamping mechanism 3-7 on the net pulling chain 3-4 is adjusted, and the adjustment is convenient.

For the net puller in each embodiment, the clamping mechanism 3-7 comprises a mounting plate 3-7-3 with a mounting hole, a clamping main body 3-7-4 fixed on the lower end face of the mounting plate 3-7-3 and provided with a hollow cavity in the middle and through grooves on both sides, two clamping sheets 3-7-8 respectively arranged on the through grooves on both sides, two spring covers 3-7-1 respectively arranged on both sides of the clamping main body 3-7-4, a first spring 3-7-5 with one end connected with the clamping sheet 3-7-8 and the other end connected with the spring cover 3-7-1, a T-shaped rod 3-7-6 arranged in the hollow cavity and provided with an upper end connected with the clamping main body 3-7-4, and a second spring 3-7-7 sleeved on the vertical rod of the T-shaped rod 3-7-6, the transverse rib 4-1 is clamped between the two clamping pieces 3-7-8, and the upper end of the transverse rib is propped against the T-shaped rod 3-7-6.

In the structure, the clamping mechanism 3-7 comprises a mounting plate 3-7-3, a clamping main body 3-7-4, two clamping pieces 3-7-8, two spring covers 3-7-1, a first spring 3-7-5, a T-shaped rod 3-7-6 and a second spring 3-7-7, and the mounting plate 3-7-3 is provided with a mounting hole which is convenient to be connected with a protruding chain plate.

The clamping main body 3-7-4 is fixed on the lower end face of the mounting plate 3-7-3, a through hole is formed in the specific mounting plate 3-7-3, a connecting shaft is arranged at the upper end of the clamping main body 3-7-4 and provided with an external thread, the connecting shaft extends into the through hole and extends for a distance, and the extending portion is fastened through a nut, so that the clamping main body is easy to connect and convenient to detach. Of course, this connection is only a preferred connection, for example, the end surfaces of the mounting plate 3-7-3 and the clamping body 3-7-4 are both provided with holes, and the connection can be achieved by bolting or direct welding, which is within the scope of the present invention.

The middle of the clamping main body 3-7-4 is provided with a hollow cavity, the two sides of the clamping main body are provided with through grooves which can be T-shaped, the clamping main body 3-7-4 is divided into two parts, the two clamping pieces 3-7-8 are respectively arranged in the through grooves at the two sides and can move in the through grooves, and when the transverse rib 4-1 is clamped, the transverse rib 4-1 is clamped between the two clamping pieces 3-7-8. The two spring covers 3-7-1 are respectively arranged outside the two sides of the clamping main body 3-7-4, and are fixed after the position is adjusted to seal the two sides. One end of the first spring 3-7-5 is connected with the clamping piece 3-7-8, the other end is connected with the spring cover 3-7-1, the position of the spring cover 3-7-1 is fixed, one side of the clamping piece 3-7-8 is movable, when the transverse rib 4-1 is clamped, the position of the clamping piece 3-7-8 cannot move any more, the first spring 3-7-5 is in a compressed state, and the clamping piece 3-7-8 has a clamping effect on the transverse rib 4-1 under the restoring force of the first spring 3-7-5. Preferably, two sides of the bottom end of the clamping main body 3-7-4 are arc-shaped, so that interference in clamping the transverse rib 4-1 is avoided, and collision on the transverse rib 4-1 and the clamping piece 3-7-8 is reduced.

The T-shaped rod 3-7-6 is arranged in the hollow cavity, the upper end of the T-shaped rod 3-7-6 is connected with the clamping main body 3-7-4, the connecting shaft of the clamping main body 3-7-4 is a stepped hollow shaft, the vertical rod of the T-shaped rod 3-7-6 extends into a stepped hollow hole of the stepped hollow shaft, the upper end of the vertical rod is provided with external threads, the end part of the vertical rod, which exceeds the stepped surface, is connected with a nut, and when the transverse rib 4-1 is not clamped, the lower end surface of the nut is abutted against the stepped surface; after the transverse bar 4-1 is clamped, the upper end of the transverse bar 4-1 is propped against the T-shaped rod 3-7-6, and the vertical rod moves upwards for a certain distance. The second springs 3-7-7 are sleeved on the vertical rods of the T-shaped rods 3-7-6, the lower ends of the second springs 3-7-7 are connected with the cross rods of the T-shaped rods 3-7-6, the upper ends of the second springs 3-7-7 are connected with the clamping main bodies 3-7-4, when the transverse ribs 4-1 are clamped, the upper ends of the transverse ribs 4-1 are propped against the T-shaped rods 3-7-6, the second springs 3-7-7 are in a compressed state, and the T-shaped rods 3-7-6 have downward acting force on the transverse ribs 4-1. When the transverse rib 4-1 is separated from the frame 2, the T-shaped clamping mechanism 3-7 releases the mesh 4 under the action of the restoring force of the second spring 3-7-7.

According to the technical scheme, transverse adjusting grooves are formed in the clamping main body 3-7-4 and the spring cover 3-7-1, through holes matched with the transverse adjusting grooves are formed in the clamping pieces 3-7-8, the clamping rotating shaft 3-7-2 penetrates through the through holes and the transverse adjusting grooves, the end portions of the clamping rotating shaft are fastened through nuts, the clamping rotating shaft 3-7-2 transversely moves in the transverse adjusting grooves in the process that the clamping pieces 3-7-8 move left and right, the transverse adjusting grooves limit the clamping rotating shaft 3-7-2 to move up and down, and the guide effect is achieved.

According to the technical scheme, the adjusting rod is arranged on the outer side of the clamping main body 3-7-4, the adjusting hole matched with the adjusting rod is formed in the spring cover 3-7-1, the adjusting rod is inserted into the adjusting hole, the end portion of the adjusting rod is provided with external threads, and the adjusting rod and the adjusting hole are fastened through nuts. The distance of the adjusting rod inserted into the adjusting hole can be adjusted, so that the acting force of the first spring 3-7-5, namely the clamping force of the clamping piece 3-7-8, can be adjusted. The distance that regulation pole inserted the regulation hole specifically can be decided according to the actual application condition, all is the utility model discloses a within the protection scope.

The utility model provides a net puller under the unchangeable condition of other parts, frame 2 includes lower frame 2-1, upper frame 2-2 and many cylinders 2-2-1, and upper frame 2-2 cooperates with lower frame 2-1 nestification, but both scalable adjustable interval, the height of adjustment frame 2, it is convenient to adjust. Specifically, the upper frame 2-2 and the lower frame 2-1 are provided with matched sleeves, and the sleeves are fixed through the stop bolts 2-3 after the positions of the sleeves are adjusted, so that the sleeves are convenient to connect. The plurality of rollers 2-2-1 are arranged on the upper rack 2-2 through the rolling shafts, the rollers 2-2-1 can support the net piece 4, noise generated by friction between the net piece 4 and a supporting table surface in the moving process is greatly reduced, and meanwhile, the moving direction of the net piece 4 is accurately controlled, so that the mesh quality is improved. Preferably, the end of the lower bracket is provided with a supporting caster 2-1-1, which is convenient to move.

Further optimizing the technical scheme, the surface of the roller 2-2-1 is provided with a plurality of circular grooves, the size of each circular groove is adaptive to the diameter of each longitudinal rib 4-2, the distance between every two adjacent longitudinal ribs is adaptive to the distance between every two adjacent longitudinal ribs 4-2, and each circular groove is used for accommodating the corresponding longitudinal rib 4-2 of the corresponding reinforcing steel bar and supporting the mesh 4; but also has the function of guiding and preventing deviation.

In order to further optimize the technical scheme, the upper frame 2-2 is provided with a longitudinal groove in the vertical direction, the rolling shaft can float up and down in the longitudinal groove, and the mounting position can be adjusted up and down in a floating manner according to the actual condition. After the installation position is determined, the roller is fixed through the bolt.

In another more reliable embodiment, on the basis of any one of the above embodiments, the driving rotating shaft part 3-33-2 and the driven rotating shaft part 3-6 comprise a rotating shaft body and a plurality of mounting adjusting shafts 3-2-2, and rolling bearings 3-2-1 are mounted at both ends of the driving rotating shaft body 3-2-3 and the driven rotating shaft body 3-6-1 and are mounted on the upper frame 2-2 through bearing seats 3-1. The installation adjusting shafts 3-2-2 are sleeved on the rotating shaft body, the net pulling chain wheel is installed on the installation adjusting shafts 3-2-2, and the installation adjusting shafts 3-2-2 can slide left and right on the rotating shaft body, so that the installation positions of the net pulling chain wheels can be adjusted, and the adjustment is convenient.

Further optimizing the technical scheme, the rotating shaft body is a spline shaft, the installation adjusting shaft 3-2-2 is provided with a spline groove matched with a spline of the spline shaft, and the rotating shaft body is connected with the installation adjusting shaft 3-2-2 through the spline. The installation adjusting shaft 3-2-2 is provided with a small hole, and is connected with the rotating shaft body through a set screw 3-5, so that the rotating shaft body is prevented from shaking and is accurately positioned.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above that the utility model provides a net puller introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The net puller is characterized by comprising a rack (2), a net pulling device (3) arranged on the rack (2) and a driving device (1) connected with the net pulling device (3), wherein the net pulling device (3) comprises a driving rotating shaft part (3-3) (3-2) which is connected with the driving device (1) and is provided with a plurality of chain wheels, a driven rotating shaft part (3-6) of which the chain wheels are connected with the driving rotating shaft part (3-3) (3-2) through a net pulling chain (3-4), and a plurality of clamping mechanisms (3-7) which are arranged on the net pulling chain (3-4) and are provided with protruding chain plates.

2. Net puller according to claim 1, characterized in that the raised link plate of the clamping mechanism (3-7) is L-shaped, and the horizontal plate has sliding grooves on both sides, and the mounting holes of the clamping mechanism (3-7) are connected with the sliding grooves by bolts, and the bolts can move in the sliding grooves.

3. The net puller according to claim 2, wherein the clamping mechanism (3-7) comprises a mounting plate (3-7-3) having the mounting hole, a clamping body (3-7-4) fixed on the lower end surface of the mounting plate (3-7-3) and having a hollow cavity in the middle and through grooves on both sides, two clamping pieces (3-7-8) respectively mounted on the through grooves on both sides, two spring covers (3-7-1) respectively mounted on both sides of the clamping body (3-7-4), a first spring (3-7-5) having one end connected with the clamping piece (3-7-8) and the other end connected with the spring cover (3-7-1), and a T-shaped rod (3-7-4) disposed in the hollow cavity and having an upper end connected with the clamping body (3-7-4) 7-6) and a second spring (3-7-7) sleeved on the vertical rod of the T-shaped rod (3-7-6), wherein a transverse rib (4-1) is clamped between the two clamping pieces (3-7-8), and the upper end of the transverse rib is propped against the T-shaped rod (3-7-6).

4. The net puller according to claim 3, wherein the clamping body (3-7-4) and the spring cover (3-7-1) are provided with transverse adjusting grooves, the clamping piece (3-7-8) is provided with a through hole matched with the transverse adjusting grooves, a clamping rotating shaft (3-7-2) penetrates through the through hole and the transverse adjusting grooves, and the clamping rotating shaft (3-7-2) can move transversely in the transverse adjusting grooves.

5. Net puller according to claim 3, characterized in that the clamping body (3-7-4) has an adjusting rod on its outside, the spring cover (3-7-1) has an adjusting hole matching with the adjusting rod, and the adjusting rod and the adjusting hole are fastened by a nut.

6. Net puller according to claim 1, characterized in that the frame (2) comprises a lower frame (2-1), an upper frame (2-2) telescopically adjustable in a nested fit with the lower frame (2-1), a plurality of rollers (2-2-1) mounted to the upper frame (2-2) by means of rollers.

7. A lapper according to claim 6, characterized in that the surface of the drum (2-2-1) has a number of circular grooves of a size corresponding to the diameter of the longitudinal ribs (4-2) and a distance corresponding to the distance between two adjacent longitudinal ribs (4-2).

8. A net puller according to claim 6, characterized in that the upper frame (2-2) has a longitudinal slot in the vertical direction, in which the rollers can float up and down and are fixed by bolts.

9. The net puller according to claim 6, wherein the driving rotating shaft part (3-3) (3-2) and the driven rotating shaft part (3-6) comprise a rotating shaft body, rolling bearings (3-2-1) are mounted at two ends of the rotating shaft body and are mounted on the upper frame (2-2) through bearing seats (3-1), and a plurality of mounting adjusting shafts (3-2-2) are sleeved on the rotating shaft body, the net pulling chain wheel is mounted on the mounting adjusting shafts (3-2-2), and the mounting adjusting shafts (3-2-2) can slide left and right on the rotating shaft body.

10. The net puller according to claim 9, wherein the rotating shaft body is a spline shaft, the mounting and adjusting shaft (3-2-2) is provided with spline grooves corresponding to splines of the spline shaft, and the mounting and adjusting shaft (3-2-2) is connected with the rotating shaft body through a set screw (3-5).