Vehicle-mounted movable contraction type horizontal tensile machine

Abstract

The invention relates to the technical field of horizontal tensile machines, and particularly discloses a vehicle-mounted movable contraction type horizontal tensile machine which comprises a control box, a control button is arranged at the top end of the control box, two first variable-pitch beams are arranged at the top end of the control box, and a supporting beam is fixedly installed at the bottom of the end, away from the control box, of each first variable-pitch beam. Second variable-pitch beams are slidably mounted in the first variable-pitch beams, a beam frame is fixedly mounted at the ends, away from the control box, of the two second variable-pitch beams, and a straight moving assembly is arranged on the side wall of the beam frame. And the side protection assemblies are located on the two opposite sides of the horizontal tensile machine, and the two ends of the sliding beam are each provided with two cams. According to the invention, the telescopic rack is provided, the space is saved, the assembled side plate structure matched with the telescopic variable-pitch tensile machine is provided, the safety of the side of the horizontal tensile machine is improved, a to-be-tested product is convenient to fix and disassemble, and the safety of the top of the horizontal tensile machine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal tensile machines, and in particular to a vehicle-mounted mobile contraction-type horizontal tensile machine. Background Art

[0002] Horizontal tensile testing machines are mainly used to perform tensile tests on various materials and components to determine their mechanical performance parameters. These materials include flexible or rigid materials such as metals, steel cables, chains, anchor chains, lifting belts, cables, etc. Horizontal tensile testing machines measure key indicators such as tensile strength, elongation at break, elastic modulus, etc. by applying tensile force. They are widely used in aerospace, petrochemical, auto parts, engineering plastics, wires and cables, textiles, ceramics, building materials and other industries.

[0003] A Chinese patent (CN221745742U) discloses a horizontal optical fiber tensile testing machine, including a base and a displacement mechanism, wherein a control platform is installed on the top of the base, and a displacement mechanism is arranged on one side of the control platform. The displacement mechanism enhances the convenience of replacing the tensile sensor, reduces the influence of component wear on the experimental results, and can replace tensile sensors of different precisions to meet more needs. The driving motor drives the threaded rod to rotate, so that the threaded movable column moves horizontally to achieve the stretching of the optical fiber. The tensile sensor collects data and transmits it back to the control platform for analysis. The tensile sensor is connected to the sliding block slot for easy replacement. The limit bar prevents the sliding block from shifting. The triangular support plate provides support for the upper component. The limit frame limits the direction of movement of the movable column to always remain vertical. The support ring balances the gravity support of the threaded rod. The locking screw rotates and the locking ring clamps the optical fiber to prevent the optical fiber from falling off during the pulling process.

[0004] However, there are some disadvantages in the above-mentioned related technologies. For example, during use, some existing horizontal tensile testing machines are difficult to meet the needs of longer products to be tested due to the fixed overall length of the frame. When meeting the needs of longer products to be tested, the tensile machine occupies a large space; since the frame lacks a protective structure against the fracture of the product to be tested, the safety is not high enough. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a vehicle-mounted mobile contraction-type horizontal tensile machine, which can solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A vehicle-mounted mobile contraction-type horizontal tensile machine, comprising:

[0008] A control box, wherein a control button is arranged on the top of the control box, and two first variable-pitch beams are arranged on the top of the control box, a support beam is fixedly installed on the bottom of one end of the first variable-pitch beam away from the control box, a second variable-pitch beam is slidably installed in the first variable-pitch beam, and a beam frame is fixedly installed on one end of the two second variable-pitch beams away from the control box, and a straight-moving component is arranged on the side wall of the beam frame;

[0009] Side guard assemblies, the side guard assemblies are located on two opposite sides of the horizontal tensile machine;

[0010] A sliding beam, two cams are arranged at both ends of the sliding beam, the two cams located on the same side of the sliding beam match the adjacent second variable pitch beam, a cylinder seat is penetrated and fixedly installed on the side of the sliding beam away from the second variable pitch beam, a first supporting column is arranged on the end of the cylinder seat close to the second variable pitch beam, a first porous triangular plate is installed on the end of the first supporting column away from the cylinder seat through a pin, a tension sensor is arranged on the end of the cylinder seat close to the control box, a driving component for driving the sliding beam to slide is arranged in the control box, a second supporting column is fixedly installed on the side of the beam frame close to the control box, and a second porous triangular plate is installed on the end of the second supporting column close to the control box through a pin;

[0011] A wire passing assembly, the wire passing assembly being located between the sliding beam and the control box;

[0012] A limiting assembly, wherein the limiting assembly is used to fix the first variable-length beam and the second variable-length beam;

[0013] A first limit rod and a second limit rod are arranged at the top ends of the two first variable-distance beams, and both ends of the first limit rod and the second limit rod are respectively installed on the top ends of the first variable-distance beams through limit folding plates, the length of the first limit rod is smaller than that of the second limit rod, and the first limit rod and the second limit rod are flush with each other at one end close to the control box, a first protective cover is slidably installed between the two first limit rods, and a second protective cover is slidably installed between the two second limit rods, and the height of the first protective cover is lower than that of the second protective cover.

[0014] Preferably, the top end of the second variable-pitch beam is flush with the top end of the beam frame, and reinforcing ribs are installed between the second variable-pitch beam and the beam frame.

[0015] Preferably, the straight-moving component comprises a support wheel, a support block is fixedly mounted on the side wall of the beam frame, a pitch-changing rod is penetrated through the support block, and the support wheel is mounted on the bottom end of the pitch-changing rod.

[0016] Preferably, the side guard assembly includes a first protective plate and a second protective plate, the two first protective plates are respectively fixedly installed on the side away from the two first variable-distance beams, the side walls of the first protective plates are provided with two first protective windows, the second protective plate is assembled on the side walls of the second variable-distance beams, and the side walls of the second protective plates are provided with multiple second protective windows.

[0017] Preferably, a plurality of snap fasteners are provided on a side of the second protective plate away from the second variable-pitch beam, a plurality of buckle holes are provided on a side wall of the second variable-pitch beam, and the snap fasteners match the buckle holes.

[0018] Preferably, the driving assembly includes a hydraulic cylinder, which is installed on the inner wall of the control box. The piston rod output end of the hydraulic cylinder is connected to a transmission rod via a coupling. The end of the transmission rod away from the hydraulic cylinder is fixedly connected via a fastener tension sensor. The second support column, the cylinder seat, the first support column and the transmission rod are coaxially arranged.

[0019] Preferably, the wire-passing assembly includes a wire-passing steel pipe, one end of which is fixedly mounted on the side wall of the sliding beam, the side wall of the wire-passing steel pipe is provided with a wire-passing hole, the wire-passing steel pipe cooperates with the wire-passing hole for threading the wire, a limiting sleeve is passed through and fixedly mounted on one side of the control box close to the sliding beam, and the wire-passing steel pipe and the limiting sleeve are arranged in a sliding sleeve connection.

[0020] Preferably, the limiting assembly comprises a limiting member, and the top ends of the first variable-distance beam and the second variable-distance beam are both provided with a plurality of limiting holes in a linear array, and the limiting member matches the limiting holes.

[0021] Preferably, a plurality of first limiting wheels are arranged at the bottom end of the first protective cover, two second limiting wheels are arranged at the bottom end of the second protective cover, the second limiting wheels match the second limiting rod, and two circular wheels are arranged at the bottom end of the second protective cover, the circular wheels match the beam frame.

[0022] Preferably, a pull-wire sensor is installed on a side of the control box close to the beam frame, and the pull-wire sensor is used to monitor the displacement distance of the sliding beam.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting the first variable pitch beam and the second variable pitch beam, the beneficial effect that can be obtained is a control box, a control button is set at the top of the control box, two first variable pitch beams are set at the top of the control box, a support beam is fixedly installed at the bottom of one end of the first variable pitch beam away from the control box, a second variable pitch beam is slidably installed in the first variable pitch beam, a beam frame is fixedly installed at one end of the two second variable pitch beams away from the control box, a straight-moving component is set on the side wall of the beam frame, and the side guard component is located on the opposite sides of the horizontal tensile machine, two cams are set at both ends of the sliding beam, and the two cams on the same side of the sliding beam match the adjacent second variable pitch beams, a cylinder seat is penetrated and fixedly installed on one side of the sliding beam away from the second variable pitch beam, a first support column is set at one end of the cylinder seat close to the second variable pitch beam, a first multi-hole triangle plate is installed through a pin at one end of the first support column away from the cylinder seat, a tension sensor is set at one end of the cylinder seat close to the control box, a driving component for driving the sliding beam to slide is set in the control box, a second support column is fixedly installed on one side of the beam frame close to the control box, and a second multi-hole triangle plate is installed through a pin at one end of the second support column close to the control box;

[0025] The operator first connects the external AC power supply to the control box to provide power, pulls the beam frame according to the length of the product to be tested, adjusts the second variable-pitch beam to slide in the first variable-pitch beam, adjusts the distance between the beam frame and the sliding beam, then removes the limit piece and inserts it into the limit hole between the second variable-pitch beam and the first variable-pitch beam, then connects the two ends of the product to be tested to the first porous triangular plate and the second porous triangular plate respectively, and through the control button, the hydraulic cylinder cooperates with the transmission rod to pull the tension sensor, cooperates with the cylinder seat to pull the sliding beam, cooperates with the first support column and the first porous triangular plate to perform a tension test on the product to be tested, the tension sensor cooperates with the PLC controller to control the hydraulic cylinder, and the wire sensor detects the displacement of the sliding beam to complete the tension test. It has a retractable rack and saves space.

[0026] 2. By setting the side guard assembly, the beneficial effect that can be obtained is that the side guard assembly includes a first guard plate and a second guard plate, the two first guard plates are respectively fixedly installed on the sides away from the two first variable pitch beams, the side wall of the first guard plate is provided with two first guard windows, the second guard plate is assembled on the side wall of the second variable pitch beam, and the side wall of the second guard plate is provided with a plurality of second guard windows;

[0027] The second protective window is installed to the side wall of the second variable pitch beam through the snap fasteners and the buckle holes, so that an assembled side plate structure matching the contraction variable pitch tensile machine is provided, thereby improving the safety of the side of the horizontal tensile machine.

[0028] 3. By setting the first limit rod and the second limit rod, the beneficial effect that can be obtained is that the top ends of the two first variable-distance beams are provided with the first limit rod and the second limit rod, the two ends of the first limit rod and the second limit rod are respectively installed on the top ends of the first variable-distance beams through limit folding plates, the length of the first limit rod is smaller than that of the second limit rod, the first limit rod and the second limit rod are flush with one end close to the control box, a first protective cover is slidably installed between the two first limit rods, a second protective cover is slidably installed between the two second limit rods, and the height of the first protective cover is lower than that of the second protective cover;

[0029] Pull the second protective cover, the second limiting wheel cooperates with the second limiting rod to roll on the first variable pitch beam, the round wheel slides on the second variable pitch beam, and then pull the first protective cover, multiple first limiting wheels cooperate with the first limiting rod to slide on the first variable pitch beam, the first protective cover and the second protective cover protect the top of the horizontal tensile machine, which is convenient for fixing and disassembling the product to be tested and improves the safety of the top of the horizontal tensile machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0031] Figure 1 It is a schematic diagram of the overall telescopic state structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the overall extended state structure of the present invention;

[0033] Figure 3 It is the installation structure diagram of the driving assembly in the present invention;

[0034] Figure 4 This is a diagram of the installation structure of the buckle and the buckle hole in the present invention;

[0035] Figure 5 It is a structural diagram of the installation of the sliding beam and the cam in the present invention;

[0036] Figure 6 This is a diagram of the installation structure of the position limiting member in the present invention;

[0037] Figure 7 It is a diagram of the installation structure of the first limiting rod and the second limiting rod in the present invention;

[0038] Figure 8 This is a diagram of the installation structure of the second protective cover in the present invention.

[0039] Description of reference numerals:

[0040] In the figure: 1, control box; 11, control button; 12, first variable pitch beam; 13, support beam; 14, second variable pitch beam; 15, beam frame; 16, reinforcing ribs; 17, support block; 18, variable pitch rod; 19, support wheel; 21, first protective plate; 22, first protective window; 23, second protective plate; 24, second protective window; 25, buckle; 26, buckle hole; 31, sliding beam; 32, cam; 33, cylinder seat; 34, first support column; 35, first multi- Hole triangle plate; 36, tension sensor; 37, second support column; 38, second multi-hole triangle plate; 41, hydraulic cylinder; 42, transmission rod; 51, wire-passing steel pipe; 52, wire-passing hole; 53, limit sleeve; 61, limit hole; 62, limit member; 71, first limit rod; 72, second limit rod; 73, limit folding plate; 74, first protective cover; 75, first limit wheel; 76, second protective cover; 77, second limit wheel; 78, round wheel; 8, wire pulling sensor. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside", "outside", etc. is based on the orientation or position described in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0043] Reference Figure 1-Figure 8 , is a vehicle-mounted mobile contraction-type horizontal tensile machine disclosed in the present invention, comprising:

[0044] A control box 1, a control button 11 is arranged at the top of the control box 1, two first pitch-variable beams 12 are arranged at the top of the control box 1, a support beam 13 is fixedly installed at the bottom of one end of the first pitch-variable beam 12 away from the control box 1, a second pitch-variable beam 14 is slidably installed in the first pitch-variable beam 12, a beam frame 15 is fixedly installed at one end of the two second pitch-variable beams 14 away from the control box 1, the top of the second pitch-variable beam 14 is flush with the top of the beam frame 15, a reinforcing rib 16 is installed between the second pitch-variable beam 14 and the beam frame 15, a straight-moving component is arranged on the side wall of the beam frame 15, and the straight-moving component includes a support wheel 19, a support block 17 is fixedly installed on the side wall of the beam frame 15, a pitch-variable rod 18 is penetrated by the support block 17, and the support wheel 19 is installed at the bottom end of the pitch-variable rod 18;

[0045] Side guard assembly, the side guard assembly is located on the opposite sides of the horizontal tensile machine, and the side guard assembly includes a first guard plate 21 and a second guard plate 23. The two first guard plates 21 are respectively fixedly installed on the sides away from the two first variable pitch beams 12. The side wall of the first guard plate 21 is provided with two first guard windows 22. The second guard plate 23 is assembled on the side wall of the second variable pitch beam 14. The side wall of the second guard plate 23 is provided with a plurality of second guard windows 24. The side of the second guard plate 23 away from the second variable pitch beam 14 is provided with a plurality of snap fasteners 25. The side wall of the second variable pitch beam 14 is provided with a plurality of buckle holes 26, and the snap fasteners 25 match the buckle holes 26.

[0046] A sliding beam 31, two cams 32 are arranged at both ends of the sliding beam 31, the two cams 32 located on the same side of the sliding beam 31 match the adjacent second variable pitch beam 14, a cartridge seat 33 is penetrated and fixedly installed on the side of the sliding beam 31 away from the second variable pitch beam 14, a first support column 34 is arranged at one end of the cartridge seat 33 close to the second variable pitch beam 14, a first multi-hole triangle plate 35 is installed at one end of the first support column 34 away from the cartridge seat 33 through a pin, a tension sensor 36 is arranged at one end of the cartridge seat 33 close to the control box 1, and a control box 1 is provided in the control box 1 for driving the sliding beam 3 1 sliding drive assembly, the drive assembly includes a hydraulic cylinder 41, the hydraulic cylinder 41 is installed on the inner wall of the control box 1, the piston rod output end of the hydraulic cylinder 41 is connected to the transmission rod 42 through a coupling, the end of the transmission rod 42 away from the hydraulic cylinder 41 is fixedly connected through a fastener tension sensor 36, a second support column 37 is fixedly installed on the side of the beam frame 15 close to the control box 1, and a second porous triangular plate 38 is installed on the end of the second support column 37 close to the control box 1 through a pin, and the second support column 37, the cylinder seat 33, the first support column 34 and the transmission rod 42 are coaxially arranged;

[0047] A wire-passing assembly is located between the sliding beam 31 and the control box 1. The wire-passing assembly includes a wire-passing steel pipe 51. One end of the wire-passing steel pipe 51 is fixedly mounted on the side wall of the sliding beam 31. A wire-passing hole 52 is arranged on the side wall of the wire-passing steel pipe 51. The wire-passing steel pipe 51 cooperates with the wire-passing hole 52 for threading. A limiting sleeve 53 is penetrated and fixedly mounted on one side of the control box 1 close to the sliding beam 31. The wire-passing steel pipe 51 and the limiting sleeve 53 are arranged in a sliding sleeve connection;

[0048] A limiting assembly is used to fix the first variable-distance beam 12 and the second variable-distance beam 14. The limiting assembly includes a limiting member 62. The top ends of the first variable-distance beam 12 and the second variable-distance beam 14 are both provided with a plurality of limiting holes 61 in a linear array. The limiting member 62 matches the limiting holes 61.

[0049] The top ends of the two first variable-distance beams 12 are provided with a first limiting rod 71 and a second limiting rod 72. Both ends of the first limiting rod 71 and the second limiting rod 72 are respectively installed on the top ends of the first variable-distance beams 12 through limiting folding plates 73. The length of the first limiting rod 71 is smaller than that of the second limiting rod 72. The first limiting rod 71 and the second limiting rod 72 are flush with one end close to the control box 1. A first protective cover 74 is slidably installed between the two first limiting rods 71, and a second protective cover 76 is slidably installed between the two second limiting rods 72. The height of the first protective cover 74 is lower than that of the second protective cover 76. A plurality of first limiting wheels 75 are provided at the bottom end of the first protective cover 74, and two second limiting wheels 77 are provided at the bottom end of the second protective cover 76. The second limiting wheel 77 matches the second limiting rod 72. Two round wheels 78 are provided at the bottom end of the second protective cover 76, and the round wheels 78 match the beam frame 15.

[0050] The pull-wire sensor 8 is installed on one side of the control box 1 close to the beam frame 15 . The pull-wire sensor 8 is used to monitor the displacement distance of the sliding beam 31 .

[0051] The working principle and use process of the present invention are as follows: the operator first connects the external AC power supply to the control box 1 to provide power, pulls the beam frame 15 according to the length of the product to be tested, adjusts the second variable pitch beam 14 to slide in the first variable pitch beam 12, adjusts the distance between the beam frame 15 and the sliding beam 31, then removes the limiting piece 62 and inserts it into the limiting hole 61 between the second variable pitch beam 14 and the first variable pitch beam 12, then connects the two ends of the product to be tested to the first porous triangular plate 35 and the second porous triangular plate 38 respectively, then installs the second protective window 24 to the side wall of the second variable pitch beam 14 through the snap fastener 25 and the buckle hole 26, then pulls the second protective cover 76, the second limiting wheel 77 cooperates with the second limiting rod 72 to roll on the first variable pitch beam 12, the round wheel 78 slides on the second variable pitch beam 14, then pulls the first protective cover 74, and multiple A limiting wheel 75 cooperates with the first limiting rod 71 to slide on the first variable pitch beam 12, and the first protective cover 74 and the second protective cover 76 protect the top of the horizontal tensile testing machine. Through the control button 11, the hydraulic cylinder 41 cooperates with the transmission rod 42 to pull the tension sensor 36, and cooperates with the cylinder seat 33 to pull the sliding beam 31, and cooperates with the first support column 34 and the first porous triangular plate 35 to perform a tension test on the side product. The tension sensor 36 cooperates with the PLC controller to control the hydraulic cylinder 41, and the wire sensor 8 detects the displacement of the sliding beam 31 to complete the tension test. This contraction type horizontal tensile testing machine can adapt to the test of samples of different lengths. The test takes the safety rope test as an example. According to the national standard requirements, the safety rope test force value is 2205N, and the holding time is 5 minutes. When the tension is 2205N, the hydraulic machine 7 stops stretching and maintains it for 5 minutes.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vehicle-mounted mobile contraction-type horizontal tensile machine, characterized in that: include: A control box (1), wherein a control button (11) is arranged at the top of the control box (1), and two first variable-pitch beams (12) are arranged at the top of the control box (1), a support beam (13) is fixedly installed at the bottom of one end of the first variable-pitch beam (12) away from the control box (1), a second variable-pitch beam (14) is slidably installed inside the first variable-pitch beam (12), and a beam frame (15) is fixedly installed at one end of the two second variable-pitch beams (14) away from the control box (1), and a straight-moving component is arranged on the side wall of the beam frame (15); Side guard assemblies, the side guard assemblies are located on two opposite sides of the horizontal tensile machine; A sliding beam (31), wherein two cams (32) are arranged at both ends of the sliding beam (31), and the two cams (32) located on the same side of the sliding beam (31) match the adjacent second variable pitch beam (14); a cylinder seat (33) is penetrated and fixedly installed on the side of the sliding beam (31) away from the second variable pitch beam (14); a first support column (34) is arranged on the end of the cylinder seat (33) close to the second variable pitch beam (14); a first multi-hole triangular plate (35) is installed on the end of the first support column (34) away from the cylinder seat (33) through a pin; a tension sensor (36) is arranged on the end of the cylinder seat (33) close to the control box (1); a driving component for driving the sliding beam (31) to slide is arranged in the control box (1); a second support column (37) is fixedly installed on the side of the beam frame (15) close to the control box (1); and a second multi-hole triangular plate (38) is installed on the end of the second support column (37) close to the control box (1) through a pin; A wire passing assembly, the wire passing assembly being located between the sliding beam (31) and the control box (1); A limiting assembly, the limiting assembly being used to fix the first variable-length beam (12) and the second variable-length beam (14); A first limiting rod (71) and a second limiting rod (72) are arranged at the top ends of the two first variable-distance beams (12); both ends of the first limiting rod (71) and the second limiting rod (72) are respectively mounted on the top ends of the first variable-distance beams (12) through limiting folding plates (73); the length of the first limiting rod (71) is shorter than that of the second limiting rod (72); the first limiting rod (71) and the second limiting rod (72) are arranged flush with one end close to the control box (1); a first protective cover (74) is slidably mounted between the two first limiting rods (71); a second protective cover (76) is slidably mounted between the two second limiting rods (72); and the height of the first protective cover (74) is lower than that of the second protective cover (76).

2. A vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The top end of the second variable-pitch beam (14) is flush with the top end of the beam frame (15), and a reinforcing rib (16) is installed between the second variable-pitch beam (14) and the beam frame (15).

3. A vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The straight-moving assembly comprises a support wheel (19), a support block (17) is fixedly mounted on the side wall of the beam frame (15), a pitch-changing rod (18) is penetrated by the support block (17), and the support wheel (19) is mounted on the bottom end of the pitch-changing rod (18).

4. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The side guard assembly comprises a first guard plate (21) and a second guard plate (23), the two first guard plates (21) being respectively fixedly mounted on the sides of two first variable-distance beams (12) that are away from each other, the side walls of the first guard plates (21) being provided with two first guard windows (22), the second guard plate (23) being mounted on the side walls of the second variable-distance beams (14), and the side walls of the second guard plates (23) being provided with a plurality of second guard windows (24).

5. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 4, characterized in that: A plurality of snap fasteners (25) are provided on a side of the second protective plate (23) away from the second variable-pitch beam (14), a plurality of buckle holes (26) are provided on a side wall of the second variable-pitch beam (14), and the snap fasteners (25) match the buckle holes (26).

6. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The driving assembly comprises a hydraulic cylinder (41), wherein the hydraulic cylinder (41) is mounted on the inner wall of the control box (1), wherein the piston rod output end of the hydraulic cylinder (41) is connected to a transmission rod (42) via a coupling, wherein one end of the transmission rod (42) away from the hydraulic cylinder (41) is fixedly connected via a fastener tension sensor (36), and the second support column (37), the cylinder seat (33), the first support column (34) and the transmission rod (42) are coaxially arranged.

7. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The wire-passing assembly comprises a wire-passing steel pipe (51), one end of which is fixedly mounted on a side wall of a sliding beam (31), a wire-passing hole (52) is provided on the side wall of the wire-passing steel pipe (51), the wire-passing steel pipe (51) cooperates with the wire-passing hole (52) for threading wires, a limiting sleeve (53) is passed through and fixedly mounted on one side of the control box (1) close to the sliding beam (31), and the wire-passing steel pipe (51) and the limiting sleeve (53) are arranged in a sliding sleeve connection.

8. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: The limiting assembly comprises a limiting member (62), and the top ends of the first variable-distance beam (12) and the second variable-distance beam (14) are both provided with a plurality of limiting holes (61) in a linear array, and the limiting member (62) matches the limiting holes (61).

9. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: A plurality of first limiting wheels (75) are arranged at the bottom end of the first protective cover (74), two second limiting wheels (77) are arranged at the bottom end of the second protective cover (76), the second limiting wheels (77) match the second limiting rod (72), and two circular wheels (78) are arranged at the bottom end of the second protective cover (76), the circular wheels (78) match the beam frame (15).

10. The vehicle-mounted mobile contraction-type horizontal tensile machine according to claim 1, characterized in that: A pull-wire sensor (8), the pull-wire sensor (8) is installed on a side of the control box (1) close to the beam frame (15), and the pull-wire sensor (8) is used to monitor the displacement distance of the sliding beam (31).

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