An electric wire stringing device for engineering construction

Abstract

The present invention relates to the field of electric wire stringing, and discloses an electric wire stringing device for engineering construction, which includes a multi-stage telescopic cylinder, an inner gear cylinder fixedly connected to the secondary lifting part of the multi-stage telescopic cylinder, and an outer sleeve fixedly connected to the lifting part of the multi-stage telescopic cylinder. A base is fixedly connected to the bottom of the multi-stage telescopic cylinder, and limiting strips and T-shaped guide rods are fixedly connected to both the left and right sides of the inner gear cylinder. By utilizing the contractibility of the multi-stage telescopic cylinder and the storage property of the outer sleeve for the cable rack, the length and volume of the device are greatly reduced, facilitating storage, transportation, and carrying. When controlling the telescopic movement of the multi-stage telescopic cylinder, the cable rack automatically unfolds horizontally and then moves up or resets relative to the outer sleeve, which is convenient to use and improves the efficiency of wire stringing and wire collection. At the same time, the initial operating position of the cable rack is relatively low, making it easy and labor-saving to string the cable. In addition, the actual wire stringing height can be controlled, and when the cable reaches the calibrated height during wire stringing, the cable can be automatically locked and fixed.

Description

Technical Field

[0001] The invention relates to the technical field of power line stringing, and in particular to a power line stringing device for engineering construction. Background Art

[0002] In order to meet the temporary electricity needs of the construction site during the construction process, a power transmission system needs to be set up, so temporary power wiring work is required. During the process, multiple cable support racks need to be set at intervals on the wiring path to support the cables, so as to avoid the cables dragging on the ground and causing electrical hazards and hindering ground construction activities.

[0003] The patent with publication number CN118249247B discloses an electric power line stringing device for construction engineering, including a lifting component, a hanging line component is provided at the top of the lifting component, universal wheels are provided at the four corners of the bottom outer wall of the lifting component, and the hanging line component includes an installation unit; when the invention is laying down the cable, the cable can be firstly wound around the winding unit, and then the winding unit is installed on the sprocket, so that the clamping unit has its own cable, and when the wire needs to be laid later, the cable can be pulled so that the cable is pulled apart, so that the cable is connected with the cable on another wire stringing device, so as to achieve the purpose of rapid wire laying, and when the cable needs to be removed later, the rotating rod can be rotated with a wrench, so that one of the sprockets rotates with other sprockets through the chain, so that multiple winding units rotate at the same time, so that multiple winding units wind up the cable, so as to achieve automatic winding of the cable, and reduce the difficulty of removing temporary wires in construction engineering.

[0004] When the power line stringing device in the above patent is in use, its main body is mainly composed of a lifting component and a hanging line component, wherein the height of the housing mounting frame of the lifting component is equivalent to the normal use height of the line stringing, and is also the minimum height of the line stringing. Since the general line stringing height needs to be at least higher than the height of a normal adult, when the power line stringing device is not deployed for use, although it is relatively neatly stored, its length is still large. At the same time, since the clamping units on both sides lack limit when stored, the connection between the mounting frame and the mounting frame is easy to loosen after multiple uses. If the device is tilted, the clamping unit is easy to automatically fall out, which affects storage and transportation; at the same time, when the control cable clamping unit is deployed for use, the two clamping units need to be manually pulled out and fixed, and since the mounting frame is high, the entire operation is relatively inconvenient; when the two clamping units are pulled out to a horizontal level for line stringing, the multiple reeling units lack reliable and effective locking, and the cable cannot be locked in the appropriate position according to the actual line stringing needs. When the cable in the reeling unit is not completely emptied, the erected cable is prone to dragging, sag, etc. Summary of the invention

[0005] The object of the present invention is to solve the problems that in the use of general power line erection devices, there are inconveniences in storage, transportation and line erection, and the cable lacks reliable and effective locking. The present invention provides a power line erection device for engineering construction.

[0006] In order to achieve the above object, the present invention specifically adopts the following technical solutions:

[0007] A power line erection device for engineering construction includes a multi-stage telescopic cylinder, an inner gear cylinder fixedly connected to the secondary lifting part of the multi-stage telescopic cylinder, and an outer sleeve fixedly connected to the lifting part of the multi-stage telescopic cylinder. The bottom of the multi-stage telescopic cylinder is fixedly connected with a base. Both the left and right sides of the inner gear cylinder are fixedly connected with limit strips and T-shaped guide rods;

[0008] Both the left and right sides of the outer sleeve have receiving grooves. The upper and lower sides of the receiving grooves are respectively rotatably connected with a shaft rod and a toothed rod. The toothed rod meshes with the outer wall of the inner gear cylinder. Transmission belts are movably sleeved between the two ends of the shaft rod and the toothed rod. A card frame arranged on the transmission belt is slidably clamped at the bottom of the receiving groove. A shaft wheel is rotatably connected in the card frame. A horizontal notch is opened at the bottom of the front side of the shaft wheel, and the horizontal notch can be movably abutted against the outer wall of the limit strip. A guide groove through which the T-shaped guide rod is movably clamped is provided through the shaft wheel;

[0009] A cable rack is fixedly connected to the top of the shaft wheel. A plurality of card wire grooves are equidistantly opened along the length direction on the inner side of the cable rack. Arc plates are movably hinged on both sides of the port of each card wire groove. Guide rollers are rotatably connected to the tops of the arc plates. A plurality of card wire adjusting components corresponding to the card wire grooves are arranged in the cable rack. A telescopic spring rod is arranged between the card wire adjusting component and the arc plate. A elastic ejector rod is slidably clamped on the rear wall of the cable rack. An inclined block is arranged on the upper side of the receiving groove. The bottom of the inclined block has a slope surface. A pressure sensor is arranged on the slope surface. The elastic ejector rod can be movably abutted against the surface of the pressure sensor, and the pressure sensor can feedback to control the multi-stage telescopic cylinder to stop.

[0010] Further, one side of the transmission belt away from the inner gear cylinder is fixedly inserted into the card frame, and one side of the transmission belt close to the inner gear cylinder is movably inserted into the card frame.

[0011] Further, the guide groove is composed of an arc groove close to the axis of the shaft wheel and a straight groove at the edge of the shaft wheel connected in combination. One end of the arc groove away from the straight groove is below the axis of the shaft wheel, and the included angle formed by both ends of the arc groove and the axis of the shaft wheel is a right angle. The straight groove extends to the outer peripheral surface of the shaft wheel and has a rounded edge design.

[0012] Further, a movable groove corresponding to the T-shaped guide rod is opened in the middle of the shaft wheel.

[0013] Further, avoidance grooves corresponding to the wire clamping adjustment assembly are formed in the left and right side walls of the inner gear cylinder.

[0014] Further, a semi-circular ring is fixedly connected between the two bevel blocks. The semi-circular ring is slidably clamped on the rear wall of the inner cavity of the outer sleeve. A torsion block is rotatably connected to the outer end of the bevel block, and a torsion spring is arranged between the torsion block and the outer end of the bevel block.

[0015] A number of linearly distributed scale grooves are formed in the left and right side walls of the outer sleeve, and the torsion block is movably clamped with the scale grooves.

[0016] Further, the wire clamping adjustment assembly includes a first push bent plate and a second push bent plate rotatably connected in the cable rack. The first push bent plate and the second push bent plate are respectively movably hinged with corresponding telescopic spring rods. The first push bent plate and the second push bent plate are slidably connected. An inclined groove one is formed in the middle of the first push bent plate, and an inclined groove two is formed in the middle of the second push bent plate. A wedge column is slidably clamped at the rear end of the cable rack, and a pin protrusion fixedly connected to the outer wall of the wedge column is movably clamped with the inclined groove one and the inclined groove two respectively.

[0017] Further, the inclined directions of the inclined groove one and the inclined groove two are opposite.

[0018] Further, a wedge groove corresponding to the wedge column is formed in the elastic ejector rod, and the wedge groove and the wedge column respectively have inclined surfaces that abut against each other.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. By utilizing the contractility of the multi-stage telescopic cylinder and the storage property of the outer sleeve for the cable rack, the length and volume of the device are greatly reduced, which is convenient for storage and transportation. When controlling the expansion and contraction of the multi-stage telescopic cylinder, the cable rack automatically horizontally unfolds and then moves up or resets relative to the outer sleeve, which is convenient to use and improves the efficiency of wire laying and winding. At the same time, since the cable rack is arranged near the bottom of the outer sleeve, after the multi-stage telescopic cylinder is extended to drive the cable rack to horizontally unfold at the beginning of wire laying, the cable rack follows the outer sleeve and moves up slightly, just at a height convenient for human operation, making it easy and labor-saving to lay the cable.

[0021] 2. After the cable rack of the present invention is automatically horizontally unfolded, the bevel block and the pressure sensor are used to limit the upward movement height of the cable rack relative to the outer sleeve, so as to control the actual wire laying height. Moreover, by using the pressure sensor to feedback the extrusion information of the elastic ejector rod, the multi-stage telescopic cylinder can be controlled to stop twice, so that when the cable is about to reach the calibrated height during cable laying, it can prompt to control the traction to hold the cable horizontally to eliminate the sag. Then, when the cable reaches the calibrated height during cable laying, it automatically stops rising, and the wire clamping and adjusting assembly is controlled to deflect the arc plate on the wire clamping groove to lock and fix the cable, so as to avoid the cable slipping during use and affecting the electrical safety. The wire laying is safe and reliable.

[0022] 3. When laying wires, the present invention uses the T-shaped guide rod and the limit strip to continuously limit the guide groove on the shaft wheel, so as to ensure that when the clamping frame moves upward, the shaft wheel drives the cable rack to stably deflect and then remain horizontal continuously. The cable laying is stable and reliable, and the cable rack is stable in retraction and extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structure diagram of the power wire laying device of the present invention;

[0024] Figure 2 is a three-dimensional sectional view of the internal gear cylinder and the outer sleeve part of the power wire laying device of the present invention;

[0025] Figure 3 is a three-dimensional structure diagram of the internal gear cylinder part of the power wire laying device of the present invention;

[0026] Figure 4 is a three-dimensional section of the outer sleeve part of the power wire laying device of the present invention Figure 1 ;

[0027] Figure 5 is a three-dimensional sectional view of the multi-stage telescopic cylinder and the outer sleeve part of the power wire laying device of the present invention;

[0028] Figure 6 is a three-dimensional structure diagram of the shaft wheel and the cable rack part of the power wire laying device of the present invention;

[0029] Figure 7 is a three-dimensional sectional view of the shaft wheel and the cable rack part of the power wire laying device of the present invention;

[0030] Figure 8 is a three-dimensional sectional view of the cable rack part of the power wire laying device of the present invention;

[0031] Figure 9 is a three-dimensional exploded view of the first and second push plates of the power wire laying device of the present invention;

[0032] Figure 10 is a three-dimensional section of the outer sleeve part of the power wire laying device of the present invention Figure 2 ;

[0033] Figure 11 is a three-dimensional section of the outer sleeve part of the power line erection device of the present invention Figure 3 .

[0034] Reference numerals: 1, base; 11, multi-stage telescopic cylinder; 12, semi-circular ring; 13, bevel block; 14, pressure sensor; 15, torsion block; 2, inner gear cylinder; 21, limit strip; 22, T-shaped guide rod; 3, outer sleeve; 31, shaft rod; 32, toothed rod; 33, transmission belt; 34, scale groove; 4, card frame; 41, shaft wheel; 42, horizontal notch; 43, guide groove; 5, cable rack; 51, arc plate; 52, guide roller; 53, first push and bend plate; 54, first inclined groove; 55, second push and bend plate; 56, second inclined groove; 57, elastic telescopic rod; 58, wedge column; 59, pin projection; 6, elastic push rod. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] Embodiment 1

[0037] As Figures 1 - 11 shown, a power line erection device for engineering construction includes a multi-stage telescopic cylinder 11, an inner gear cylinder 2 fixedly connected to the secondary lifting part of the multi-stage telescopic cylinder 11, and an outer sleeve 3 fixedly connected to the lifting part of the multi-stage telescopic cylinder 11. A base 1 is fixedly connected to the bottom of the multi-stage telescopic cylinder 11. Limit strips 21 and T-shaped guide rods 22 are fixedly connected to both the left and right sides of the inner gear cylinder 2;

[0038] Both the left and right sides of the outer sleeve 3 are provided with receiving grooves. A shaft rod 31 and a toothed rod 32 are respectively rotatably connected to the upper and lower sides of the receiving grooves. The toothed rod 32 meshes with the outer wall of the inner gear cylinder 2. Transmission belts 33 are movably sleeved between the two ends of the shaft rod 31 and the toothed rod 32. A card frame 4 arranged on the transmission belt 33 is slidably clamped at the bottom of the receiving groove. A shaft wheel 41 is rotatably connected in the card frame 4. A horizontal notch 42 is opened at the bottom of the front side of the shaft wheel 41. The horizontal notch 42 can movably abut against the outer wall of the limit strip 21. A guide groove 43 that is movably clamped with the T-shaped guide rod 22 is penetrated through the shaft wheel 41;

[0039] A cable rack 5 is fixedly connected to the top of the shaft wheel 41, and a number of wire clamping grooves are equidistantly provided on the inner side of the cable rack 5 along the length direction. Arc plates 51 are movably hinged on both sides of the port of each wire clamping groove, and a guide roller 52 is rotatably connected to the top of the arc plate 51. A number of wire clamping adjustment components corresponding to the wire clamping grooves are provided in the cable rack 5, and a telescopic spring rod 57 is provided between the wire clamping adjustment component and the arc plate 51. An elastic push rod 6 is slidably connected to the rear wall of the cable rack 5, and an angled block 13 is provided on the upper side of the storage groove. The bottom of the angled block 13 has a slope, and a pressure sensor 14 is provided on the slope. The elastic push rod 6 can movably abut against the surface of the pressure sensor 14, and the pressure sensor 14 can feedback control the multi-stage telescopic cylinder 11 to stop.

[0040] When in use, the multi-stage telescopic cylinder 11 has a plurality of telescopic parts that can be telescoped synchronously. The multi-stage telescopic cylinder 11 is controlled to extend, and the top lifting part and the secondary lifting part thereof are automatically moved up, and the top lifting part is synchronously moved up relative to the secondary lifting part, and the corresponding gear rods 32 on both sides are meshed with the inner gear cylinder 2 to drive the transmission belt 33 to operate, and the transmission belt 33 automatically transports the card frame 4 upward along the storage groove, during which the T-shaped guide rod 22 is used to drive the guide groove 43 so that the shaft wheel 41 drives the cable rack 5 to deflect outward to a horizontal direction, and the horizontal cutout 42 on the shaft wheel 41 that is about to be separated from the T-shaped guide rod 22 is just aligned with and abutted against the surface of the limit strip 21. When the card frame 4 moves up, the shaft wheel 41 drives the cable rack 5 to remain horizontal, which is stable and reliable for the installation of the cable line. Since the cable rack 5 is initially arranged near the bottom position of the outer sleeve 3, after the cable rack 5 is horizontally unfolded, the upward movement distance of the cable rack 5 relative to the outer sleeve 3 is small. , at this time, the extension distance of the multi-stage telescopic cylinder 11 is also small, and the cable rack 5 is in a position relatively close to the ground, which is convenient for the wire-laying operation. The multi-stage telescopic cylinder 11 is controlled to continue to extend, and the required wire-laying height can be adjusted. When the cable rack 5 is just at a height that is convenient for human operation, the multi-stage telescopic cylinder 11 can be controlled to stop, so that the installation of the cable line can be easy and labor-saving. After the cable rack 5 is controlled to stop moving up, the cables are squeezed one by one on the arc plate 51 to compress the telescopic spring rod 57 and then pressed into the wire clamping groove. The cable line is overlapped on the wire clamping groove under the action of gravity. During this period, the rotation nature of the guide roller 52 is used to avoid the cable line and the arc plate 51 from being hard squeezed and worn. The telescopic spring rod 57 is used to drive the arc plate 51 to relatively surround and limit the cable line, reducing the probability of the cable line coming out during the process of laying, pulling and subsequent movement of the cable rack 5. At the same time, it is convenient for the subsequent collection device to directly pull the cable line out from the inner side of the arc plate 51;

[0041] Subsequently, when the card frame 4 drives the shaft wheel 41 and the cable rack 5 to continue moving upward, since the elastic ejector rod 6 and the cable rack 5 are in the same horizontal state, when the elastic ejector rod 6 presses against the pressure sensor 14, the pressure sensor 14 controls the multi-stage telescopic cylinder 11 to automatically stop according to the feedback of the initial pressure signal. At this time, the height of the cable rack 5 is close to the required cable laying height. According to this signal, the cable traction mechanism can be controlled to fully traction and hold the cable relative to the horizontal to eliminate the sag. Then, the multi-stage telescopic cylinder 11 is controlled to continue operating and extending. As the cable rack 5 drives the elastic ejector rod 6 to continue moving upward, the extrusion force of the end of the elastic ejector rod 6 on the pressure sensor 14 on the inclined surface of the bevel block 13 increases. When the extrusion force increases to the calibration value, the pressure sensor 14 controls the multi-stage telescopic cylinder 11 to stop for the second time according to the corresponding pressure signal feedback. At this time, the cable laying reaches the required calibration height. The corresponding elastic ejector rod 6 automatically drives the wire clamping adjustment assembly to deflect the arc plates 51 on each wire clamping groove to lock and fix the cable, thereby preventing the cable from slipping during subsequent use and affecting the electrical safety. In addition, by using the retractability of the multi-stage telescopic cylinder 11 and the storage property of the outer sleeve 3 for the cable rack 5, the length and volume of the device are greatly reduced, which is convenient for storage, carrying and transportation.

[0042] Embodiment 2, on the basis of the above embodiment, provides a connection mechanism between the transmission belt 33 and the card frame 4:

[0043] As Figure 6 shown, the side of the transmission belt 33 away from the inner gear cylinder 2 is fixedly inserted into the card frame 4, and the side of the transmission belt 33 close to the inner gear cylinder 2 is movably inserted into the card frame 4.

[0044] When the outer sleeve 3 moves upward relative to the inner gear cylinder 2, the toothed rods 32 on both sides of the outer sleeve 3 mesh with the inner gear cylinder 2 and rotate, driving the transmission belt 33 to operate. The transmission belt 33 thus automatically conveys the card frame 4 upward along the storage groove. Since the transmission belt 33 is movably sleeved between the two ends of the shaft rod 31 and the toothed rod 32, the force on the card frame 4 is balanced and the upward movement is stable and reliable.

[0045] Embodiment 3, on the basis of the above embodiment, provides a guide groove 43 structure:

[0046] As Figure 2 and Figures 6 - 7 shown, the guide groove 43 is composed of an arc groove near the axis of the shaft wheel 41 and a straight groove at the edge of the shaft wheel 41 connected and combined. One end of the arc groove away from the straight groove is below the axis of the shaft wheel 41, and the included angle formed by both ends of the arc groove and the axis of the shaft wheel 41 is a right angle. The straight groove extends to the outer peripheral surface of the shaft wheel 41 and has a rounded edge design.

[0047] When the card frame 4 initially moves upward along the storage groove, the arc groove in the guide groove 43 drives the axle wheel 41 to deflect automatically under the drive of the T-shaped guide rod 22. When the T-shaped guide rod 22 is movably clamped in the communication area of the arc groove and the straight groove, the axle wheel 41 drives the cable rack 5 to deflect outward to the horizontal just right, and the card frame 4 drives the deflected axle wheel 41 so that the horizontal cut 42 is just at the lower end of the limit bar 21. As the card frame 4 continues to move upward, the T-shaped guide rod 22 is movably clamped with the vertical straight groove at this time, and the horizontal cut 42 just abuts and cuts into the surface of the limit bar 21 and is parallel to the limit bar 21, so as to ensure that the axle wheel 41 drives the cable rack 5 to continue to be horizontal, which is stable and reliable for the subsequent cable laying. In this process, the straight groove ensures the stable switching of the axle wheel 41 from being limited by the T-shaped guide rod 22 to being limited by the limit bar 21. Thus, when the multi-stage telescopic cylinder 11 expands and contracts, the cable rack 5 automatically unfolds or resets horizontally, which is convenient to use and improves the efficiency of laying and winding the cable.

[0048] Furthermore, an activity groove corresponding to the T-shaped guide rod 22 is provided in the middle of the axle wheel 41.

[0049] With this design, when controlling the deflection of the axle wheel 41, there will be no mutual interference between the axle wheel 41 and the T-shaped guide rod 22.

[0050] Embodiment 4, on the basis of the above embodiment:

[0051] As Figures 3 - 4 shown, avoidance grooves corresponding to the wire clamping and adjusting assembly are provided on both the left and right side walls of the inner gear cylinder 2.

[0052] With this design, the storage limit of the cable rack 5 driving the wire clamping and adjusting assembly in the outer sleeve 3 can be correspondingly improved, avoiding protrusion and affecting storage and transportation.

[0053] Embodiment 5, on the basis of the above embodiment, provides a height adjusting mechanism for the bevel block 13:

[0054] As Figures 4 - 5 shown, a semi-circular ring 12 is fixedly connected between the two bevel blocks 13. The semi-circular ring 12 is slidably clamped on the rear wall of the inner cavity of the outer sleeve 3. The outer end of the bevel block 13 is rotatably connected with a torsion block 15, and a torsion spring is arranged between the torsion block 15 and the outer end of the bevel block 13;

[0055] A number of linearly distributed scale grooves 34 are provided on both the left and right side walls of the outer sleeve 3, and the torsion block 15 is movably clamped with the scale grooves 34.

[0056] When all parts of the multi-stage telescopic cylinder 11 extend synchronously and drive the outer sleeve 3 to move upward relative to the inner gear cylinder 2, the cable support 5 moves upward synchronously relative to the outer sleeve 3, and the bevel block 13 limits the upward movement height of the cable support 5 in the outer sleeve 3, so that the actual wire laying height can be limited. By compressing the torsion spring, the torsion blocks 15 on both sides are deflected to be parallel to the bevel block 13, and then the torsion blocks 15 are clamped into the corresponding scale grooves 34 according to the corresponding wire laying height requirements, so as to facilitate the control of the extension length of the multi-stage telescopic cylinder 11 and improve the wire laying efficiency.

[0057] Embodiment 6, on the basis of the above embodiment, provides a wire clamping and adjusting assembly:

[0058] As Figures 8 - 10 shown, the wire clamping and adjusting assembly includes a first push bent plate 53 and a second push bent plate 55 rotatably connected in the cable support 5. The first push bent plate 53 and the second push bent plate 55 are respectively movably hinged to the corresponding telescopic spring rods 57. The first push bent plate 53 and the second push bent plate 55 are slidably connected to each other. A first inclined groove 54 is formed in the middle of the first push bent plate 53, and a second inclined groove 56 is formed in the middle of the second push bent plate 55. A wedge column 58 is slidably clamped at the rear end of the cable support 5, and a pin protrusion 59 fixedly connected to the outer wall of the wedge column 58 is movably clamped with the first inclined groove 54 and the second inclined groove 56 respectively.

[0059] The inclination directions of the first inclined groove 54 and the second inclined groove 56 are opposite.

[0060] Further, a wedge groove corresponding to the wedge column 58 is formed in the elastic ejector rod 6, and the wedge groove and the wedge column 58 respectively have inclined surfaces that abut against each other.

[0061] When the elastic ejector rod 6 is driven by the cable support 5 to move upward and contracts due to the extrusion of the inclined surface of the bevel block 13, the elastic ejector rod 6 automatically uses the wedge groove to extrude the wedge column 58 to drive the pin protrusion 59 to move forward. The pin protrusion 59 thus drives the first inclined groove 54 to deflect the first push bent plate 53 upward on one side, and drives the second inclined groove 56 to deflect the second push bent plate 55 upward on the other side. The first push bent plate 53 and the second push bent plate 55 simultaneously squeeze the telescopic spring rods 57 on both sides of the wire clamping groove, so as to drive the two arc plates 51 on the wire clamping groove to deflect inward to lock and fix the cable, thus preventing the cable from slipping during use and affecting the electrical safety.

[0062] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric wire stringing device for engineering construction, comprising a multi-stage telescopic cylinder (11), an internal gear cylinder (2) fixedly connected to the second lifting part of the multi-stage telescopic cylinder (11), and an outer sleeve (3) fixedly connected to the lifting part of the multi-stage telescopic cylinder (11), characterized in that, The bottom of the multi-stage telescopic cylinder (11) is fixedly connected to a base (1). On both the left and right sides of the inner gear cylinder (2), a limiting strip (21) and a T-shaped guide rod (22) are fixedly connected respectively; On both the left and right sides of the outer sleeve (3), there are storage grooves. On the upper and lower sides of each storage groove, a shaft rod (31) and a toothed rod (32) are rotatably connected respectively. The toothed rod (32) meshes with the outer wall of the inner gear cylinder (2). A transmission belt (33) is movably sleeved between the two ends of the shaft rod (31) and the toothed rod (32). At the bottom of the storage groove, a card frame (4) arranged on the transmission belt (33) is slidably clamped. The side of the transmission belt (33) away from the inner gear cylinder (2) is fixedly inserted into the card frame (4), and the side of the transmission belt (33) close to the inner gear cylinder (2) is movably inserted into the card frame (4). In the card frame (4), a shaft wheel (41) is rotatably connected. At the bottom of the front side of the shaft wheel (41), a horizontal notch (42) is opened, and the horizontal notch (42) can be movably abutted against the outer wall of the limiting strip (21). A guide groove (43) that is movably clamped with the T-shaped guide rod (22) is penetrated through the shaft wheel (41); At the top of the shaft wheel (41), a cable rack (5) is fixedly connected. Inside the cable rack (5), a number of card wire grooves are equidistantly opened along the length direction. On both sides of the port of each card wire groove, an arc plate (51) is movably hinged. At the top of the arc plate (51), a guide roller (52) is rotatably connected. In the cable rack (5), a number of card wire adjusting components corresponding to the card wire grooves are arranged. A telescopic spring rod (57) is arranged between the card wire adjusting component and the arc plate (51). A resilient ejector rod (6) is slidably clamped on the rear wall of the cable rack (5). An inclined block (13) is arranged on the upper side of the storage groove. The bottom of the inclined block (13) has a slope surface, and a pressure sensor (14) is arranged on the slope surface. The resilient ejector rod (6) can be movably abutted against the surface of the pressure sensor (14), and the pressure sensor (14) can feedback to control the multi-stage telescopic cylinder (11) to stop; 2. An electric wire stringing device for engineering construction according to claim 1, characterized in that, The guide groove (43) is composed of an arc groove close to the axis of the shaft wheel (41) and a straight groove at the edge of the shaft wheel (41) connected in combination. The end of the arc groove away from the straight groove is below the axis of the shaft wheel (41), and the included angle formed by both ends of the arc groove and the axis of the shaft wheel (41) is a right angle. The straight groove extends to the peripheral surface of the shaft wheel (41) and has a rounded edge design.

3. An electric wire stringing device for engineering construction according to claim 2, characterized in that, An activity groove corresponding to the T-shaped guide rod (22) is opened in the middle of the shaft wheel (41).

4. An electric wire stringing device for engineering construction according to claim 3, characterized in that, Avoidance grooves corresponding to the card wire adjusting components are opened on both the left and right side walls of the inner gear cylinder (2).

5. An electric wire stringing device for engineering construction according to claim 4, characterized in that, A semi-circular ring (12) is fixedly connected between the two inclined blocks (13) on both sides. The semi-circular ring (12) is slidably clamped on the rear wall of the inner cavity of the outer sleeve (3). The outer end of the inclined block (13) is rotatably connected with a torsion block (15), and a torsion spring is arranged between the torsion block (15) and the outer end of the inclined block (13); A plurality of linearly distributed scale grooves (34) are formed in the left and right side walls of the outer sleeve (3), and the torsion block (15) is movably clamped with the scale grooves (34).

6. An electric wire stringing device for engineering construction according to claim 5, characterized in that, The wire clamping and adjusting assembly includes a first pushing bent plate (53) and a second pushing bent plate (55) rotatably connected in the cable rack (5). The first pushing bent plate (53) and the second pushing bent plate (55) are respectively movably hinged to corresponding telescopic spring rods (57). The first pushing bent plate (53) and the second pushing bent plate (55) are slidably connected to each other. A first inclined groove (54) is formed in the middle of the first pushing bent plate (53), and a second inclined groove (56) is formed in the middle of the second pushing bent plate (55). A wedge column (58) is slidably clamped at the rear end of the cable rack (5). A pin protrusion (59) fixedly connected to the outer wall of the wedge column (58) is movably clamped with the first inclined groove (54) and the second inclined groove (56) respectively.

7. An electric wire stringing device for engineering construction according to claim 6, characterized in that, The inclination directions of the first inclined groove (54) and the second inclined groove (56) are opposite.

8. An electric wire stringing device for engineering construction according to claim 7, characterized in that, A wedge groove corresponding to the wedge column (58) is formed in the elastic ejector rod (6), and the wedge groove and the wedge column (58) respectively have inclined surfaces that abut against each other.

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