Self-locking safety type hydraulic tension machine

Abstract

The invention relates to the technical field of tension machines, in particular to a self-locking safety hydraulic tension machine which comprises a movable chassis, a tension wheel used for winding a cable is arranged on the upper portion of the movable chassis, a mounting frame is arranged at the conveying end of the tension wheel, and a locking device used for preventing the cable from returning is arranged on the mounting frame. The locking device comprises a bottom plate arranged in the cable conveying direction, a trigger device used for monitoring the cable conveying direction is arranged on the upper portion of the bottom plate, and the output end of the trigger device is connected with a blocking device used for clamping the cable, so that the reaction sensitivity is guaranteed, and the use safety is greatly guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of tension machines, and in particular to a self-locking safety hydraulic tension machine. Background Art

[0002] The hydraulic tension machine is a kind of equipment used for transmission line tensioning and aerial cableway erection operations. The principle is to pull the cable through the tension wheel, thereby reducing the difficulty of manual operation. The tension wheel of the hydraulic tension machine is composed of a master and a driven wheel with a wheel groove liner fixed in parallel, and the diameter of the driven wheel is 0.6 to 0.95 of the diameter of the driving wheel. Wheel groove liners are also installed on the master and driven wheels. The width of the wheel groove can be set according to the specifications of the cable. When the conductor is pulled by the tension wheel, it will drive the cable forward to achieve the purpose of stringing.

[0003] It was found during use that since the hydraulic tension machine needs to work continuously, the cable will always be subjected to the pulling force. The purpose of stable traction is achieved through the cooperation between the two tension wheels. However, during the traction process, the cable may sometimes break due to excessive stress, and the broken cable will move backwards under the action of gravity. Since the cable has a long drop and length during the traction process, the broken cable will quickly withdraw from the tension machine, resulting in unstable force on the cables on the entire tension machine, which will further cause multiple breaks in the cable. The broken cable will be pulled out irregularly to the surrounding area. Due to the large force, the danger during use is greatly increased. Summary of the invention

[0004] The purpose of the present invention is to overcome the disadvantage of the tension machine in the prior art that it is dangerous during use, and to provide a self-locking safety hydraulic tension machine.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a self-locking safety hydraulic tension machine, including a mobile chassis, a tension wheel for winding cables is arranged on the upper part of the mobile chassis, a mounting frame is arranged at the conveying end of the tension wheel, and a locking device for preventing the cable from retreating is arranged on the mounting frame, the locking device includes a base plate arranged in the cable conveying direction, a trigger device for monitoring the cable conveying direction is arranged on the upper part of the base plate, and the output end of the trigger device is connected to a blocking device for clamping the cable.

[0006] Furthermore, one end of the mobile chassis is provided with wheels, the other end of the mobile chassis is provided with a traction head, and the side of the mobile chassis is provided with a hanging ring for connecting a ground anchor.

[0007] Furthermore, a lifting rod for adjusting the height is provided at one end of the mobile chassis.

[0008] Furthermore, a hydraulic motor is arranged on the side of the tension wheel, and a control box is arranged on the top of the mobile chassis.

[0009] Furthermore, the mounting frame is arranged on a mobile chassis, and a reinforcing rod connected to the mobile chassis is arranged on a side of the mounting frame.

[0010] Furthermore, a mounting groove is provided on the vertical beam of the mounting frame, a mounting plate is provided on the side wall of the vertical beam of the mounting frame, and an adjusting bolt is provided on the mounting plate.

[0011] Furthermore, the mounting groove is arranged along the vertical beam direction of the mounting frame, the mounting plate is arranged at the upper and lower parts of the mounting groove, and the end of the adjusting bolt is provided with a buckle for stabilizing the bottom plate.

[0012] Furthermore, ears connected to the mounting grooves are provided at both ends of the base plate, the buckles are connected to the ears, a pressure plate is provided on the upper part of the base plate, and a bottom groove consistent with the cable conveying direction is provided on the upper part of the pressure plate.

[0013] Further, the trigger device includes an upper pressure plate, an operating chamber is provided on the upper part of the upper pressure plate, an end cover is provided on the top of the operating chamber, a power chamber is provided on the side of the operating chamber, a plurality of action chambers are provided inside the operating chamber, a plug is provided on the top of the action chamber, the power chamber is connected with the action chamber through a first channel, a plunger is provided inside the action chamber, and a trigger head slidably connected to the cable is provided at the bottom of the plunger.

[0014] Furthermore, the blocking device comprises a release chamber indirectly connected to the first channel, a pressure rod is vertically slidably provided at the lower part of the release chamber, and a compression frame clamped on the outer side of the cable is provided at the output end of the pressure rod.

[0015] The beneficial effects of the embodiments of the present invention are as follows: the bottom of the mounting frame is fixedly arranged on the mobile chassis, and the side of the mounting frame is connected to the mobile chassis through a reinforcing rod, thereby enhancing the stability and carrying capacity of the mounting frame; a trigger device is provided on the upper part of the bottom plate for monitoring the conveying status of the cable; the output end of the trigger device is connected to a blocking device for clamping the cable when an abnormality is detected in the cable to prevent it from retreating, thereby ensuring safety during use; and the arrangement of the contacts and the contact rod ensures the sensitivity of the response, thereby greatly ensuring safety in use; the entire device can be disassembled separately for storage and transportation, thereby ensuring safety in use; and after the trigger is completed, accessories can be easily replaced and cleaned in time, thereby preventing the cable from causing danger to surrounding personnel after breaking, effectively preventing the cable from retreating and chain breaking after breaking, thereby improving the safety and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle;

[0018] Figure 3 It is a schematic diagram of the overall structure of the locking device of the present invention;

[0019] Figure 4 Another angle structure of the locking device of the present invention;

[0020] Figure 5 It is a side view structural schematic diagram of the present invention;

[0021] Figure 6 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 7 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0023] In the figure: 1. mobile chassis; 101. lifting rod; 102. control box; 103. tension wheel; 2. mounting frame; 201. mounting groove; 202. mounting plate; 3. bottom plate; 301. hanging ear; 302. pressure plate; 303. bottom groove; 304. guide groove; 4. power compartment; 5. upper pressure plate; 501. operation compartment; 502. end cover; 503. plug; 6. action compartment; 601. first channel; 602. plunger; 603. sealing block; 604. vent; 7. release compartment; 701. balance hole; 702. pin; 703. pressure rod; 704. pressing frame; 8. trigger block; 801. primer block; 802. firing pin; 9. contact; 901. hinge column; 902. touch rod; 903. striker rod; 904. monitoring spring. DETAILED DESCRIPTION

[0024] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] See also Figures 1 to 7The embodiment of the present invention discloses a self-locking safety hydraulic tension machine, which mainly includes a mobile chassis 1. A tension wheel 103 is arranged on the upper part of the mobile chassis 1. Two tension wheels 103 are arranged. When in use, the cable is wound between the two tension wheels 103. The torque of the tension wheel 103 is used to pull the cable forward. The tension wheel 103 is used to wind and pull the cable. A mounting frame 2 is arranged on the conveying end of the tension wheel 103. A locking device for preventing the cable from retreating is arranged on the upper side of the mounting frame 2. The mounting frame 2 is arranged between the two tension wheels 103. The cable is wound for many times to form a stable traction part. In order to enhance the mobility and stability of the equipment, one end of the mobile chassis 1 is equipped with wheels, and the other end is equipped with a traction head for facilitating traction and movement. In addition, a hanging ring is also arranged on the side of the mobile chassis 1 for connecting the ground anchor to ensure stability during work. A lifting rod 101 is arranged at one end of the mobile chassis 1, and the height of the tension machine can be adjusted according to actual needs to adapt to different working environments. The side of the tension wheel 103 is equipped with a hydraulic motor to provide power for the tension wheel 103. A control box 102 is also arranged on the upper part of the mobile chassis 1 to control the operation of components such as the hydraulic motor and the locking device.

[0026] The bottom of the mounting frame 2 is fixedly arranged on the mobile chassis 1, and the side of the mounting frame 2 is connected to the mobile chassis 1 through a reinforcing rod, which enhances the stability and carrying capacity of the mounting frame 2. A mounting groove 201 is provided on the vertical beam of the mounting frame 2, and the mounting groove 201 extends along the direction of the vertical beam. Mounting plates 202 are respectively provided at the upper and lower parts of the mounting groove 201, and adjusting bolts are installed on the mounting plate 202. Buckles are provided at the ends of the adjusting bolts for stabilizing the bottom plate 3. The spacing between the bottom plate 3 and the cable is controlled by adjusting the bolts. The buckles stabilize the bottom plate 3 from the side to prevent the bottom plate 3 from overturning and keep it stable in use.

[0027] A locking device is provided inside the installation slot 201, including a bottom plate 3 provided at the bottom of the installation slot 201, a trigger device provided at the top of the bottom plate 3 for monitoring the conveying state of the cable, and the output end of the trigger device is connected to a blocking device for clamping the cable when an abnormality is detected in the cable to prevent it from retreating. Hanging ears 301 are provided at both ends of the bottom plate 3, and the hanging ears 301 are slidably provided inside the installation slot 201, fixed by buckles, and the position of the bottom plate 3 is controlled by adjusting bolts, and a pressure plate 302 is provided at the top of the bottom plate 3, and a plurality of bottom grooves 303 are provided on the pressure plate 302 according to the number of cables, and the direction of the bottom groove 303 is consistent with the direction of cable conveying, ensuring that the cable can pass smoothly along the direction of the bottom groove 303, thereby ensuring the stability of use and the accuracy of monitoring.

[0028] The trigger device includes an upper pressure plate 5, on the upper part of which an operating chamber 501 is provided. The operating chamber 501 is an execution unit distributed according to the number of cables. A plurality of action chambers 6 are provided inside the operating chamber 501. The number of the action chambers 6 is set according to the wheel groove on the tension wheel 103. In order to facilitate production and use, an end cover 502 is provided on the top of the operating chamber 501. The action chamber 6 is processed vertically downward. A plug 503 is installed on the top of the action chamber 6. The plug 503 is screwed to the inside of the action chamber 6. Air holes are provided in the middle position of the plug 503 and on the top of the end cover 502. A power chamber 4 is provided on the side of the operating chamber 501. In this embodiment, the power chamber 4 adopts a high-pressure compressed air tank. High-pressure compressed gas is filled inside the power chamber 4. When in use, the filling is completed in advance and can be taken to the field for direct use. It is easy to carry, reduces manual intervention, and reduces the difficulty of operation.

[0029] The power chamber 4 is connected with the action chamber 6 through the first channel 601. The diameter of the first channel 601 is smaller than that of the action chamber 6. A ball valve (not shown in the drawings) is arranged on the first channel 601. The ball valve is closed when high-pressure gas is injected and is opened only when the cable is monitored to ensure the reliability of use. A plunger 602 is slidably arranged inside the action chamber 6. The end cover 502 and the plug head 503 facilitate the disassembly and assembly of the plunger 602. When the plunger 602 rises, the space above the plunger 602 is compressed, and the gas flows out from the air hole. The plug head 503 limits the stroke of the plunger 602 to ensure the use effect and improve the reliability of operation.

[0030] A trigger head is provided at the bottom of the plunger 602, and the trigger head is slidably connected to the cable for monitoring the state of the cable. When in use, when the cable is detected to be retreating, the trigger head causes the plunger 602 to move upward, and the high-pressure air inside the power chamber 4 is connected to the inside of the release chamber 7. Sealing rings are provided at the upper and lower parts of the plunger 602, and a sealing block 603 is provided on the side wall of the plunger 602. The sealing block 603 is made of rubber and is glued to the side wall of the plunger 602. When installing, the plunger 602 moves downward, and the sealing block 603 enters the connection between the action chamber 6 and the first channel 601. , the first channel 601 is blocked and sealed to prevent air leakage before triggering and ensure the use effect. A straight groove is provided on the top of the plunger 602 to adjust the position of the sealing block 603 to ensure the sealing effect. Below the sealing block 603, a vent hole 604 is provided to connect the release chamber 7 and the first channel 601. The top of the vent hole 604 is set as an inclined surface. When connected, when the high-pressure gas flows from the inside of the vent hole 604 to the left, the inclined surface of the vent hole 604 will assist the plunger 602 to move upward, thereby ensuring the accuracy of the action of the plunger 602 and improving the use effect.A trigger block 8 is screwed on the bottom of the action chamber 6, a trigger chamber is provided in the middle of the trigger block 8, smokeless gunpowder is provided inside the trigger chamber, a clamping ring is provided on the upper part of the trigger chamber to clamp the bottom of the plunger 602, a primer block 801 is provided at the bottom of the trigger chamber, a firing pin 802 is glued below the primer block 801, a gap is left between the firing pin 802 and the primer block 801, an upper groove is provided at the lower part of the upper pressure plate 5, the upper groove is provided corresponding to the bottom groove 303, the cable passes between the upper groove and the bottom groove 303, the bottom of the action chamber 6 passes through the top of the upper groove, the primer block 801 is screwed in from the top of the upper groove, it has a large operating space and is easy to install, a trigger block 8 is provided on the right side of the primer block 801, the trigger block 8 includes a A hinged column 901 is arranged at the bottom of the work chamber 501, and a reaction block is hingedly arranged at the bottom of the hinged column 901. A contact 9 for abutting the cable is arranged at the right end of the reaction block. A barb is arranged at the bottom of the contact 9 along the cable conveying direction. A monitoring spring 904 for pushing downward is arranged on the upper part of the contact 9. A touch rod 902 is arranged on the left side of the reaction block, and a striker rod 903 is arranged on the upper part of the touch rod 902. The moving position of the striker rod 903 intersects with the primer block 801. A notch is arranged at the left end of the touch rod 902. When in use, the cable passes through the bottom of the trigger block 8. Under the pressure of the monitoring spring 904, the contact 9 abuts against the cable. Under the action of the hinged column 901, the striker rod 903 on the touch rod 902 is away from the primer block 801. If the cable When a break occurs at one place, causing the cable to retreat, the contact 9 will be driven by the cable to rotate downward, causing one end of the contact rod 902 to rotate upward. During normal use, the end of the contact rod 902 is a certain distance away from the primer block 801. During normal use, the striker rod 903 will not contact the firing pin 802, which plays a role of insurance and ensures safe use. If the cable retreats, one end of the contact rod 902 will quickly tilt upward under the action of the cable resistance, causing the end of the contact rod 902 to hit the bottom of the operating chamber 501. The contact rod 902 will bend or break from the notch under the impact, causing the striker rod 903 to continue to rotate upward, and then hit the upper firing pin 802, and the firing pin 802 will then hit the upper primer block 801, and the primer block 801 will trigger The smokeless gunpowder inside the cavity is ignited, causing the air inside the trigger cavity to collide extremely quickly, thereby pushing the upper plunger 602 upward. Since the sealing block 603 is glued to the side of the plunger 602, the plunger 602 will destroy the glueing point between the sealing block 603 and the plunger 602 during the rapid upward movement. After the plunger 602 moves upward, the vent 604 is connected to the first channel 601, so that the high-pressure air can quickly enter the release chamber 7. In this process, the sealing block 603 is squeezed and broken, and then enters the release chamber 7, but it does not affect the release of the high-pressure gas, which greatly ensures the safety during use. In addition, the setting of the contact 9 and the contact rod 902 ensures the sensitivity of the response, which greatly ensures the safety of use.

[0031] The blocking device includes a release chamber 7 indirectly connected to the channel, a balance hole 701 is provided on the side wall of the release chamber 7 to communicate with another release chamber 7, a pressure rod 703 is vertically slidably provided at the lower part of the release chamber 7, a clamping frame 704 is provided at the output end of the pressure rod 703, the clamping frame 704 can be clamped on the outside of the cable, and the lower part of the clamping frame 704 is inserted into the guide groove 304 on the pressure plate 302 during installation to ensure stability during clamping, a pin 702 is provided on the side wall of the release chamber 7, when the pressure rod 703 slides downward quickly under manual pressure, the top of the pressure rod 703 will quickly move to the bottom of the pin 702, and the pressure rod 703 is prevented from rebounding upward, so that the clamping frame 704 can tightly press the cable onto the pressure plate 302, and a convex point for increasing resistance is provided on the upper side of the clamping frame 704 to ensure stability. When one section of the cable retracts and triggers the pressure rod 703 to be tightened, the upper release chamber 7 can also quickly spread to the remaining release chambers 7 through the balance hole 701, and then press the remaining pressure rods 703 downward to increase the locking points, and push the compression frame 704 through the pressure rod 703 to clamp the cable to prevent it from retracting, which greatly ensures the safety during use. The sound emitted when triggered can remind the operator to intervene in time to ensure safe use. In addition, the entire device can be disassembled separately for storage and transportation to ensure safe use. After the triggering is completed, it is also convenient to replace accessories and clean in time to prevent the cable from causing danger to surrounding personnel after it breaks, effectively preventing the cable from retreating and chain breakage after breaking, improving the safety and stability of the equipment, and further improving the adaptability and ease of operation of the equipment.

[0032] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0035] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A self-locking safety hydraulic tensioner, comprising a mobile chassis, characterized in that: A tension wheel for winding cables is arranged on the upper part of the mobile chassis, a mounting frame is arranged at the conveying end of the tension wheel, a locking device for preventing the cables from retreating is arranged on the mounting frame, the locking device comprises a base plate arranged in the conveying direction of the cables, a trigger device for monitoring the conveying direction of the cables is arranged on the upper part of the base plate, and a blocking device for clamping the cables is connected to the output end of the trigger device.

2. The self-locking safety hydraulic tension machine according to claim 1, characterized in that: One end of the mobile chassis is provided with wheels, the other end of the mobile chassis is provided with a traction head, and the side of the mobile chassis is provided with a hanging ring for connecting a ground anchor.

3. The self-locking safety hydraulic tension machine according to claim 1, characterized in that: A lifting rod for adjusting the height is arranged at one end of the mobile chassis.

4. The self-locking safety hydraulic tension machine according to claim 1, characterized in that: A hydraulic motor is arranged on the side of the tension wheel, and a control box is arranged on the top of the mobile chassis.

5. The self-locking safety hydraulic tension machine according to claim 1, characterized in that: The mounting frame is arranged on the mobile chassis, and a reinforcing rod connected with the mobile chassis is arranged on the side of the mounting frame.

6. The self-locking safety hydraulic tension machine according to claim 1, characterized in that: The vertical beam of the mounting frame is provided with a mounting groove, the side wall of the vertical beam of the mounting frame is provided with a mounting plate, and the mounting plate is provided with an adjusting bolt.

7. The self-locking safety hydraulic tension machine according to claim 6, characterized in that: The mounting groove is arranged along the vertical beam direction of the mounting frame, the mounting plate is arranged at the upper part and the lower part of the mounting groove, and the end of the adjusting bolt is provided with a buckle for stabilizing the bottom plate.

8. The self-locking safety hydraulic tension machine according to claim 7, characterized in that: Both ends of the bottom plate are provided with hanging ears connected to the mounting grooves, the buckles are connected to the hanging ears, a pressure plate is provided on the top of the bottom plate, and a bottom groove consistent with the cable conveying direction is provided on the top of the pressure plate.

9. The self-locking safety hydraulic tension machine according to claim 8, characterized in that: The trigger device includes an upper pressure plate, an operating chamber is arranged on the upper part of the upper pressure plate, an end cover is arranged on the top of the operating chamber, a power chamber is arranged on the side of the operating chamber, a plurality of action chambers are arranged inside the operating chamber, a plug is arranged on the top of the action chamber, the power chamber is connected with the action chamber through a first channel, a plunger is arranged inside the action chamber, and a trigger head slidably connected to a cable is arranged at the bottom of the plunger.

10. The self-locking safety hydraulic tension machine according to claim 9, characterized in that: The blocking device comprises a release chamber indirectly connected with the first channel, a pressure rod is vertically slidably arranged at the lower part of the release chamber, and a compression frame clamped on the outer side of the cable is arranged at the output end of the pressure rod.

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