31results about How to "Improve the tension effect" patented technology

The utility model relates to the field of cloth opening machines, in particular to a cloth opening machine which comprises a base. A raw material bracket is arranged on the top of the base; a raw material roller rotationally connected is arranged on the side surface of the raw material bracket; a tensioning structure used for adjusting the tensioning effect of cloth is arranged on the top of the base. A cutting structure for sliding cutting is arranged on the top of the base; the base is provided with an air exhaust structure for collecting dust and recycling; a rotating structure for rotating and collecting is arranged on the base; the tensioning structure comprises a supporting bracket; a plurality of groups of threaded rods in threaded connection are arranged at the top of the supporting bracket; the side face of the threaded rod is provided with a rotationally-connected damping piece. According to the wave cutting device, the tensioning effect of the wave cutting device on cloth raw materials can be effectively improved through the combination of the damping piece and the threaded rod, and meanwhile, compared with a cutting ring structure, the wave cutting device achieves the machining mode of the wave cutting effect through a cutting head structure capable of continuously sliding and changing.

The invention relates to the technical field of tensioning devices, and discloses a novel tensioning device for membrane material manufacturing, which comprises a bottom plate, a working plate, a winding roller, a guide assembly and a transmission assembly, a tensioning mechanism is arranged on one side of the working plate, and the tensioning mechanism comprises a mounting plate, a supporting rod, a fixing plate, an electric telescopic rod and a wedge block. One end of the mounting plate is fixedly connected with the back face of the working plate, one side of the mounting plate is fixedly connected with one end of the supporting rod, the other end of the supporting rod is fixedly connected with one side of the fixing plate, the other side of the fixing plate is fixedly connected with one side of the electric telescopic rod, and one end of the electric telescopic rod is fixedly connected with one end of the wedge-shaped block. One side of the wedge-shaped block is in extrusion contact with one end of the wedge-shaped rod, so that the position of the tensioning wheel can be quickly adjusted, the tensioning effect on a membrane material can be improved, the problem of tensioning through driving of a plurality of air cylinders is solved, the tensioning and using cost is reduced, the tensioning speed is increased, and the manufacturing efficiency is guaranteed.

The utility model discloses a water-based synthetic leather dry method coating production device, relates to the technical field of synthetic leather production, and aims to solve the problems that in the existing synthetic leather production process, conveying and rolling are needed, the synthetic leather is poor in stability during conveying, tensioning adjustment cannot be carried out on the synthetic leather in time according to looseness of the synthetic leather, and the processing efficiency is affected. The water-based synthetic leather coating production device comprises a supporting structure and a base structure, and a first roller mounting frame is fixedly connected to the upper end of the supporting structure; the second roller mounting frame is fixedly connected to the supporting structure; the first roller component is connected to the second roller mounting frame in an embedded mode; the auxiliary roller component is connected to the second roller mounting frame in an embedded manner; the adjustable roller component is connected to the second roller mounting frame in an embedded manner; the second roller component is connected to the other second roller mounting frame in an embedded mode; and the adjusting assembly is connected to the supporting structure in a surrounding clamping and embedding manner.

The utility model provides a thermal compounding device and a battery lamination system, the thermal compounding device is used for integrally pressing a pole piece composite piece formed by laminating a pole piece and a diaphragm, and the thermal compounding device comprises a conveying mechanism for conveying the pole piece composite piece, the first thermal compounding mechanism and the second thermal compounding mechanism are sequentially arranged in the conveying direction of the pole piece composite part; the first thermal compounding mechanism is provided with a first compounding roller assembly, and the first compounding roller assembly is used for integrally pressing the middle areas of the pole piece compounding parts in the width direction; the second thermal compounding mechanism is provided with a second compounding roller assembly, and the second compounding roller assembly is used for pressing edge areas on the two sides of the pole piece compounding part into a whole in the direction perpendicular to the conveying direction of the pole piece compounding part. The thermal compounding device disclosed by the utility model can be used for improving the compatibility of the wavy edge of the pole piece compound piece, reducing the probability of bad phenomena such as bubble defects, pole piece dead folding and diaphragm wrinkling in the compounding process, and improving the compounding yield.

The utility model relates to a crawler belt anti-loosening drag chain wheel support mechanism which comprises a drag chain wheel support and a drag chain wheel body and further comprises a plurality of annular grooves, a plurality of clamping grooves and a plurality of clamping grooves, and the annular grooves are formed in the surface of the drag chain wheel body. The anti-loosening mechanism is installed in the multiple annular grooves, the anti-loosening mechanism comprises multiple annular rubber air bags, and the multiple annular rubber air bags are installed in the multiple annular grooves correspondingly; a connecting pipe penetrates through the front end of the drag chain wheel body, the surface of the end, located in the drag chain wheel body, of the connecting pipe is communicated with a plurality of air inlet pipes, and the ends, away from the connecting pipe, of the air inlet pipes penetrate through the drag chain wheel body to be communicated with an annular rubber air bag. The interior of the connecting pipe and the interior of the air inlet pipe are inflated, so that the multiple annular rubber air bags on the surface of the drag chain wheel body are expanded, a crawler belt is rapidly tensioned, in addition, due to the fact that the annular rubber air bags are expanded annularly, different positions of the crawler belt can be tensioned, and the tensioning effect is improved.

The utility model relates to the field of passenger conveying, in particular to an escalator handrail belt driving assembly which comprises a handrail wheel, a sliding mechanism and a tensioning assembly. The sliding mechanism comprises a supporting frame, a plurality of transverse shafts connected to the supporting frame, sliding pieces controllably sliding on the transverse shafts in the first direction and positioning pieces controllably sliding on the sliding pieces in the second direction. The handrail wheel is provided with a linkage part and a friction part which coaxially and synchronously rotate, and the handrail belt moves along with rotation of the friction part. The tensioning assembly comprises a transition wheel, a first chain and a second chain. The transition wheel is a double-row chain wheel and is rotationally connected to the positioning piece, and the first chain and the second chain are both carried on the transition wheel and bypass the linkage parts of the driving wheel and the handrail wheel correspondingly. And the driving wheel controllably rotates to drive the handrail wheel to synchronously rotate, so that the handrail belt is driven to move. The position of the transition wheel is adjusted through the sliding mechanism, so that the first chain and the second chain are kept tensioned. The whole structure is simple and stable, and high practicability is achieved.

The utility model discloses a multifunctional thermal sealing device for an air model game facility, which relates to the technical field of air model processing and comprises a base frame, a tensioning mechanism is fixedly mounted on one side of the top of the base frame, and a concave frame is fixedly mounted in the middle of the top of the base frame. By the adoption of the structure, the first air cylinder is started to push the fixing base to move up and down so that the pressing roller can move downwards, the pressing roller moves downwards to abut against the gas mold, the gas mold can be in a tightened state, the gas mold is arranged between the guide roller and the pressing roller, and elastic force is provided through the telescopic spring so that tensioning force can be formed between the gas mold and the pressing roller; the elastic force of the telescopic spring acts on the gas mold, so that the whole gas mold can be in a tightened state, the condition that the gas mold is wrinkled in the heat sealing period can be avoided, the heat sealing processing quality of the gas mold can be improved, the heat sealing temperature and pressure can be uniform in the gas mold processing period, and the temperature of a heat sealing area is relatively uniform; and the uniformity and the quality of heat sealing processing of the device can be improved.

The utility model relates to the technical field of centrifugal machine accessories, in particular to a centrifugal machine belt tensioning adjusting device which comprises a supporting seat, the supporting seat comprises a lower supporting seat body and an upper supporting seat body, a lower supporting arm is arranged in the lower supporting seat body, an upper supporting arm is arranged in the upper supporting seat body, and a belt wheel is further arranged outside the supporting seat bodies. A sliding strip is further arranged on the side face of the supporting base. The rotating shaft is arranged in the supporting base, the upper supporting arm and the lower supporting arm are installed on the outer side surface of the rotating shaft respectively, the rotating hinged shaft is arranged between the upper supporting arm and the lower supporting arm, and the threaded hole is formed in the rotating hinged shaft and used in cooperation with the screw rod, so that tensioning of the supporting base is achieved; the sliding strip is installed on the side face, moving of the supporting base is facilitated, the tensioning effect of the tensioning device can be greatly improved, the transmission effect of the tensioning device is guaranteed, and the transmission efficiency is improved.

The utility model relates to the technical field of electrical equipment, and discloses a multifunctional electrical control cabinet which comprises a control cabinet, sliding rails are fixedly connected to two sides of the inner wall of the control cabinet, sliding blocks are slidably connected to the interiors of the sliding rails, a rectangular long strip is fixedly connected to one side of each sliding block, a connecting shaft is fixedly connected to the interior of each rectangular long strip, and the connecting shafts are fixedly connected to the interiors of the rectangular long strips. The connecting shaft is sleeved with a connecting rod, a cabinet door is arranged at one end of the connecting rod, a hinge is fixedly connected to the inner side of the cabinet door, and the cabinet door is hinged to one end of the connecting rod through the hinge. Compared with the prior art, the control cabinet has the following advantages and effects that the cabinet door is pulled outwards, so that the cabinet door extends to the outside of the control cabinet, then the cabinet door is lifted upwards, so that the cabinet door moves upwards, and finally the cabinet door is fixed, so that in the process of opening the cabinet door, the cabinet door is simple and convenient, the space occupancy rate is greatly reduced, and the cost is reduced. Therefore, the control cabinet can be installed in a narrow power distribution room.

The utility model relates to a bearing device for bearing a house cross beam, which is characterized by comprising a bearing piece, a sleeving hole is arranged at the bottom of the bearing piece, a bearing hole for sleeving the end part of the cross beam is arranged on the side wall of the bearing piece, a storage groove is further arranged on the bearing piece, a tensioning screw rod is arranged in the storage groove, and the tensioning screw rod is connected with the bearing piece. And the threaded end of the tensioning screw rod penetrates into the bearing hole. According to the utility model, the use of bolts can be greatly reduced, and the installation and positioning of the cross beam can be more accurate and stable, so that the assembly and disassembly efficiency of the cross beam can be improved, and the assembly, disassembly and storage, disassembly and transfer, disassembly and maintenance and the like of the mobile house can be very convenient; and moreover, the probability that the cross beam is inclined can be greatly reduced, so that the assembly quality of the mobile house can be improved.

The utility model discloses an overhead line tensioning device, which comprises a line connecting device, a screw rod, a fixed seat, an adjusting nut and a locking device, the fixed seat is provided with an open hole, one end of the screw rod passes through the open hole and is in threaded connection with the adjusting nut, the other end of the screw rod is connected with the line connecting device, and the line connecting device is provided with a through hole for a line to pass through; and the locking device is in contact fit with the adjusting nut and is used for limiting the adjusting nut from moving on the screw rod. By arranging the screw rod and the adjusting nut, the tensile force can be randomly adjusted, so that the optimal tensioning effect is ensured, the use is flexible, and the overhead line is prevented from drooping; and by arranging the locking device, the locking effect on the adjusting nut can be achieved, the adjusting nut is prevented from moving on the screw rod, and the device can continuously guarantee the optimal tensioning effect on the steel wire rope.

The utility model discloses a quick tensioning device for polyester fabric production, which comprises a frame, two front squeeze rollers and two rear squeeze rollers are mounted on the frame, a rotating shaft is rotatably connected onto the frame, and a hollow sleeve is mounted on the rotating shaft. Through the cooperative arrangement of the hollow shaft sleeve and the sliding rod, when the polyester cloth needs to be tensioned, the linear actuator pushes the sliding rod, so that the sliding rod drives the hollow shaft sleeve to rotate, and the sliding rod slides out in the direction of the polyester cloth in the hollow shaft sleeve while the sliding rod increases pressure on the polyester cloth from an inclined state to a vertical state; the tension force on the polyester cloth is further increased; when the sliding rod gradually rotates to be in the vertical state, the friction wheel in transmission connection with the tensioning wheel abuts against the friction block, the closer the sliding rod is to be in the vertical state, the larger the friction force of the friction block on the friction wheel is, and therefore the friction wheel limits the tensioning wheel driven by the polyester cloth to rotate to rotate, and the tensioning effect of the tensioning wheel on the polyester cloth is further improved.

The utility model provides a multi-roller combined unwinding device which comprises an unwinding roller mechanism, a swinging roller mechanism, a first limiting roller mechanism, a second limiting roller mechanism and a leveling roller mechanism, the unwinding roller mechanism, the swinging roller mechanism, the first limiting roller mechanism and the second limiting roller mechanism are installed on a first fixing plate, and the leveling roller mechanism is installed on a second fixing plate. The swinging roller mechanism is installed on the left side of the unwinding roller mechanism, the first limiting roller mechanism is installed on the upper left portion of the first fixing plate and located above the swinging roller mechanism, and the second limiting roller mechanism is installed on the upper right portion of the first fixing plate and flush with the first limiting roller mechanism. A roll material enters the swing roller mechanism through the unwinding roller mechanism in a winding mode, then enters the leveling roller mechanism around the first limiting roller mechanism and the second limiting roller mechanism, enters the working face and then is leveled and wound out. According to the utility model, the problems of inertia rotation of the unwinding roller and inclination and wrinkling of the coiled material are solved, and meanwhile, the tensioning effect of the coiled material is improved.

The utility model provides a tensioning assembly which is characterized by comprising a tensioning die (1), a tensioning head plate assembly (2) is arranged at one end of the tensioning die (1), a tensioning tail plate assembly (3) is arranged at the other end of the tensioning die (1), and a pile splicing device (4) is further arranged in the middle of the inner side of the tensioning die (1). The tensioning assembly only comprises the tensioning die, the tensioning head plate assembly, the tensioning tail plate assembly and the pile splicing device, compared with a tensioning assembly in the prior art, the number of components is effectively reduced, use, assembly and disassembly are convenient, the pile splicing device is arranged in the middle of the inner side of the tensioning die, so that the tensioning assembly can be suitable for being used when piles of different axial sizes are tensioned, and the tensioning efficiency is improved. A containing space is formed between the middle of the tensioning ring and the outer edge of the tensioning ring and used for containing the reinforcing steel bar sleeve, the reinforcing steel bar sleeve is effectively protected, and the tensioning effect and stability are further improved.

The invention relates to the technical field of automatic film laminating machines, in particular to an automatic film laminating machine for paper tube processing, which comprises a bottom plate, a paper tube and a film roll are respectively arranged at two ends of the top of the bottom plate, and a first synchronous motor and a second synchronous motor are respectively arranged at the top of the bottom plate and on one side of the paper tube and the film roll; a first tensioning roller is arranged on the side, close to the film roll, of the top of the bottom plate, and a second tensioning roller is arranged on the side, close to the paper tube, of the top of the bottom plate. A thin film is wound on the outer side of the film roll, and one end of the thin film sequentially penetrates through the top of the first tensioning roller and the bottom of the second tensioning roller to be connected with the outer side of the paper tube; the novel automatic film laminating machine for paper tube processing is provided with a structure for tensioning a film in the film laminating process, the phenomenon that the film is loosened or wrinkled in the film laminating process is avoided, and the automatic film laminating machine has the function of auxiliary laminating on the laminated film, so that the film laminating effect can be effectively improved.

The utility model discloses a cotton thread plying transformation machine which comprises a machine frame, a plurality of tensioning mechanisms and a plurality of detection mechanisms. The rack comprises a bottom frame, the top of the bottom frame is fixedly connected with a front frame and a rear frame, and the side, away from the rear frame, of the front frame is fixedly connected with a side frame; each tensioning mechanism comprises a clamping seat, a connecting frame, a wire guide wheel, a lower tensioning wheel and an upper tensioning wheel, and the clamping seats are fixedly connected to the top of the rear frame and are arranged at intervals in the length direction of the rear frame; each detection mechanism comprises an optical fiber sensor and an optical fiber amplifier, and the optical fiber sensors and the optical fiber amplifiers are fixedly installed on the front frame and arranged at intervals in the length direction of the front frame. According to the utility model, the tensioning mechanism is used for tensioning the cotton threads, the tensioning effect is good so as to facilitate the subsequent use, the detection mechanism is used for monitoring the state of the cotton threads, the broken threads can be found in time, and the situation that the quality of plying of the cotton threads is influenced by the breakage of any one or more cotton threads is avoided.

The utility model discloses a kind of lifting mechanisms, belong to lifting mechanism technical field.This kind of lifting mechanism, including main body and auxiliary mechanism, main body includes base, the upper end of base is fixedly installed with fixed frame, the inside both sides of fixed frame are fixedly installed with a pair of slide rails, two pairs of slide rails are fixedly installed with lifting frame between, the inside one side of lifting frame is rotatably connected with first rotating shaft, and the center of first rotating shaft is sleeved with first synchronous wheel;Auxiliary mechanism includes lifting frame, the bottom end both sides of lifting frame are respectively connected with the upper end both sides of lifting frame, the inside both sides of lifting frame are fixedly installed with slide rod, mobile frame is slidably installed between a pair of slide rods, the top of lifting frame is fixedly installed with top plate, the bottom side of top plate is rotatably connected with second rotating shaft, the center of second rotating shaft is sleeved with second synchronous wheel, and first synchronous belt is wound between second synchronous wheel and first synchronous wheel, the utility model can effectively improve the practicality of lifting mechanism, with higher practical value.

The present invention discloses a composite film bag and its production equipment, including a base layer, a heat insulation structure is arranged at the bottom of the base layer, a waterproof structure is arranged at the top of the base layer, a protective structure is arranged at the top of the waterproof structure, the base layer is composed of a PET layer and a plastic layer, the waterproof structure includes a hydrophobic film and a nano film, the heat insulation structure is composed of a reflective film and an infrared film, and the protective structure is composed of a polyester film and a wear-resistant coating. The present invention can improve the structural strength and structural functionality of the base layer by firstly arranging a heat insulation structure, a waterproof structure and a protective structure on the surface of the base layer, improve the scope of application of the composite film bag, and meet the use requirements of different environments. The present invention can improve the structural functionality of the existing composite film bag, replace the method of connecting the structure through a plurality of adhesive layers, prevent the structure from separating when subjected to a high temperature environment, and avoid affecting the wrapping protection effect of the composite film bag.

The utility model discloses a coiling device for coiled material processing, which relates to the field of coiled materials and comprises a frame, the frame is composed of four vertical frames, five short transverse frames and four long transverse frames, when coiled material processing is needed, a motor is started, an output shaft of the motor drives a coiled material base material to move, and the coiled material base material is wound on the frame. When passing through the spraying device, asphalt is sprayed, the asphalt passes through the first roller to move downwards, the asphalt passes through the tensioning roller, the tensioning roller is tensioned outwards under the action of the spring, and if the tensioning force needs to be adjusted, the feeding amount of the tensioning device in the horizontal direction can be adjusted by rotating the nut to adjust the tensioning force. The non-uniform coating spraying caused by actions such as loosening and jumping of the coiled material in the traction process is avoided, the tensioning effect is good, the coiled material passes through the soaking roller in the water tank, is cooled by water, passes through the two pressing rollers after being cooled, and is uniformly pressed on the base material after being cooled, so that the adhesive force is increased for the second time, and the coiled material asphalt is prevented from falling off due to insufficient adhesive force.

The invention relates to the technical field of material tensioning, in particular to tensioning equipment suitable for production of a prestressed material of a rail sleeper. Comprising a bottom frame, the bottom frame is slidably connected with a movable frame, and the movable frame is provided with a first hydraulic push rod; the connecting piece is rotationally connected to the telescopic end of the first hydraulic push rod, the connecting piece is provided with a shell, the shell is filled with a transmission medium, the shell is slidably connected with a sliding rod, and a first pipe and a second pipe are communicated between the shell arranged in a mirror image mode; the die set is arranged on the bottom frame and used for forming materials; and the limiting mechanism is arranged on the sliding rod and is used for applying prestress to the mold group. According to the device, the shells which are arranged in a mirror image mode are communicated through the first pipe and the second pipe, so that the force applied to the sliding rod by a transmission medium in the shells is uniform, uniform prestress is applied to the mold set through the limiting mechanism, and the preload applied to the sleeper is uniform.

The utility model relates to the technical field of abrasive belt installation, and provides a diamond abrasive belt connector which comprises an abrasive belt body and a U-shaped clamping sleeve, a plurality of first fixing thorns are fixedly installed in the U-shaped clamping sleeve, and the first fixing thorns are equally divided into two groups; one end of the abrasive belt body is embedded into the U-shaped clamping sleeve, one set of first fixing thorns can better fix the abrasive belt, then the driving roller is sleeved with the abrasive belt body, then the other end of the abrasive belt body is embedded into the U-shaped clamping sleeve, the other set of first fixing thorns can fix the abrasive belt body, and the two sets of first fixing thorns incline relatively. A clamping plate is installed at the upper end of the U-shaped clamping sleeve through two limiting plates, the two limiting plates are embedded into a limiting groove, a plurality of limiting rods are fixedly embedded into the limiting groove, and a plurality of limiting holes are formed in the bottom of each limiting plate, so that the connecting performance of the limiting plates and the U-shaped clamping sleeve can be better improved by embedding the limiting rods into the limiting rods; therefore, the cable is not easy to loosen.

The utility model discloses a plastic bag conveying and tensioning mechanism, and relates to the technical field of plastic bags, the plastic bag conveying and tensioning mechanism comprises a protection plate, the bottom of the protection plate is fixedly connected with supporting legs, the top of the protection plate is provided with a roller, and the top of the protection plate is provided with a compression roller; a tensioning device is arranged at the top of the protection plate and comprises a motor, the bottom of the motor is fixedly connected with the top of the protection plate, and an output shaft of the motor is fixedly connected with a rotating rod; according to the plastic bag tensioning device, the force for driving the rotating rod to rotate through the motor is matched with a positioning block, a telescopic rod, a fixed rod and other assemblies in the tensioning device, the effect that a supporting rod rotates to drive the positioning rod to rotate and drive a sliding block to move is achieved, and the effect that the tensioning degree of a plastic bag is adjusted by adjusting the height of the fixed rod is achieved; and it is ensured that each plastic bag can be properly tensioned in the conveying process, and therefore the product quality is improved.

The utility model discloses an aluminum alloy welding wire feeding device with a dynamic tension balancing function, which comprises a moving platform, a discharging device and a wire feeding guiding assembly are arranged on the moving platform, and an adjustable tensioning assembly is arranged between the discharging device and the wire feeding guiding assembly. The guide wire feeding assembly comprises a mounting base, and a fixed wire leading wheel is arranged on the mounting base; a sliding piece is further arranged on the mounting base, and a movable lead wheel is arranged on the sliding piece; the adjustable tensioning assembly comprises a main body support, and the main body support is provided with a plurality of guiding pieces annularly distributed with the main body support. A rotating handle rotationally connected with the main body bracket is arranged in the main body bracket; a connecting rod is arranged between the rotating handle and the guide piece; and when the rotating handle is rotated, each guide piece can synchronously stretch and retract relative to the main body bracket. The feeding device is arranged on the movable platform for feeding, wires are guided and straightened through the wire guiding and feeding assembly, tensioning is synchronously conducted through the multiple guiding pieces on the adjustable tensioning assembly, and the tensioning effect is good and reliable.

This invention provides a pulley tensioning device and a stacker crane. The device includes a fixed bracket, a sliding seat slidably mounted thereon, and an adjusting assembly. The sliding seat has an axle with a tensioning pulley, and the outer circumference of the tensioning pulley has a pulley groove for accommodating the wire rope. The adjusting assembly can push the sliding seat to move, thereby causing the tensioning pulley to press the wire rope, achieving tension and preventing slippage. This device has a simple structure, is easy to install and adjust, and can effectively suppress wire rope swaying and collision, making it particularly suitable for wire rope tensioning in high-rise stacker cranes.

The utility model relates to axial flux motor manufacturing equipment technical field especially relates to tensioner, this tensioner includes guide component, winding roller, brake, outgoing line subassembly and elastic tensioning subassembly, is provided with a plurality of threading path in guide component, each threading path is used to accommodate a wire rod, at least two winding rollers are sequentially arranged along the axis, each winding roller is provided with a plurality of annular winding grooves extending along the axis, the end of each threading path is correspondingly provided with an annular winding groove, each brake is connected with a winding roller, the brake is configured to increase the resistance of winding roller rotation along the axis, each outgoing line subassembly can transmit the wire rod of winding over winding roller in the preset quantity and transmit the wire rod to the winding nozzle, each elastic tensioning subassembly is correspondingly provided with a group of outgoing line subassembly, and the elastic tensioning subassembly can drive the outgoing line subassembly elastic tensioning wire rod.

This utility model belongs to the field of textile equipment and proposes a tension control device for cotton yarn twisting. It includes a machine body, a spindle frame, a ring, a vertical roller, a tensioning device, a guide, a twisting roller, and a yarn roller. A winding motor and a twisting motor are respectively installed at the shaft ends of the yarn roller and the twisting roller. The tensioning device includes a mounting base with two centrally symmetrically distributed tensioning arms. A tensioning wheel is located at the end of each tensioning arm facing the center of the mounting base, and a tensioning shaft is located at the end of each tensioning arm near the edge of the mounting base. A driven gear is located at the shaft end of the tensioning shaft inside the mounting base. A driving gear ring is located on the transmission side of the driven gear, and a transmission device is located at the center of the driving gear ring. A tension adjusting motor is located at the power input end of the transmission device, and the tension adjusting motor is located inside the machine body. This utility model has a reasonable design, acts on the cotton yarn through multiple points / lines, has good adjustment performance, and is highly practical and suitable for large-scale promotion.

The utility model discloses a film metamaterial base material laminating device which comprises an unwinding mechanism for unwinding a metamaterial film and a laminating film, and further comprises a pushing mechanism for pushing a film material, the pushing mechanism comprises a pair of pushing rollers which are matched with each other, and the pushing rollers are driven by a driving structure; the anti-dislocation pressing rod structure is matched with the pushing roller; the anti-dislocation pressing rod structure comprises a plurality of anti-dislocation pressing rods penetrating through the pushing rollers, groove body structures matched with the anti-dislocation pressing rods are formed in the pushing rollers, and the anti-dislocation pressing rods penetrate through the groove body structures; the film is pressed down and attached through an anti-dislocation pressing rod; the height of the anti-dislocation pressing rod is adjusted through an adjusting support structure. By means of the structure, in the metamaterial film laminating process, stability and accuracy of film laminating are kept, and the technical defect that two films with different material attributes are prone to deviation and disengagement in the film laminating process is effectively overcome.

The invention discloses an automatic stringing tensioning device for a power pole wire, and belongs to the technical field of stringing, the automatic stringing tensioning device comprises a supporting plate, two symmetrically arranged fixing plates are fixedly connected to the two ends of the side wall of the rear end of the supporting plate, a take-up and pay-off roller is rotatably connected between the two fixing plates, and a wire body is wound on the take-up and pay-off roller; wherein the outer side wall of one fixing plate is fixedly connected with an L-shaped frame, the L-shaped frame is fixedly connected with a synchronizing mechanism, the first end of the synchronizing mechanism penetrates through the fixing plates and is fixedly connected with one end of the winding and unwinding roller, and the side wall of the front end of the supporting plate is fixedly connected with a reciprocating transverse moving mechanism. The second end of the synchronizing mechanism is fixedly connected with the reciprocating transverse moving mechanism. According to the electric pole stringing device, the auxiliary tensioning mechanism is arranged, the tensioning roller moves downwards to press the electric wire body to achieve the tensioning effect, the electric wire body is wound and tensioned in cooperation with the winding and unwinding roller, and therefore the tensioning effect on the electric wire body in the stringing process is improved, and the stringing quality and efficiency of an electric pole are improved.

The utility model relates to the technical field of food packaging bag processing, and discloses a dividing and cutting machine for food packaging bag processing, which comprises a working frame, a first roll shaft is arranged at a position close to the top end in the working frame, and a tension roller is arranged between the mounting frames. The first fluted disc and the second fluted disc are assembled, the first fluted disc can be driven to rotate after the driving motor is started to work, the first fluted disc and the second fluted disc are matched with each other to form meshing transmission, and one side of the second fluted disc is rotatably connected with the working frame. The other side of the second fluted disc is connected and mounted with one mounting frame, so that when the first fluted disc drives the second fluted disc to rotate in a driven manner, the mounting frame rotates correspondingly, and when the other mounting frame is connected with the working frame, the other mounting frame is also rotatably connected with the working frame, and when the angle of the mounting frame is adjusted, a tensioning roller can be matched to complete tensioning adjustment; therefore, the overall tensioning effect is well improved in the working process.

The utility model discloses a variable-speed controllable grain discharging wheel structure which comprises a grain discharging section, a grain discharging space is arranged in the grain discharging section, at least one set of grain discharging device is arranged at an inlet of the grain discharging space, the grain discharging device comprises four grain discharging wheels arranged in parallel, the grain discharging wheels are connected with first chain wheels through rotating shafts, and the first chain wheels are connected with second chain wheels through rotating shafts. Four second chain wheels are arranged below the four first chain wheels, a third chain wheel is parallel to the first chain wheels, the chain is connected with the four first chain wheels, the four second chain wheels and the third chain wheel to form a chain wheel set, the third chain wheel is a driving wheel, and the driving wheel is connected with a variable frequency motor through a rotating shaft. According to the structure, the four grain discharging wheels form a cooperative working unit. Through precise control of the variable-speed motor, the four grain discharging wheels can achieve highly synchronous variable-speed operation. In addition, the structure adopts high-quality combination of the chain wheel and the chain, so that the stability and the efficiency of power transmission are ensured.