Non-ballast-raking type hydraulic sleeper squaring device

By designing a non-sharpening hydraulic square pillow, using horizontal jacks, top joints, vertical drive components and vibrators, the problems of sleeper correction and low compactness of gravel in the prior art are solved, and efficient correction and improved compactness of gravel at the lower gravel at the sleeper are achieved.

CN222975571UActive Publication Date: 2025-06-13HAN HUANG RAILWAY CO LTD
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Patent Information

Application Number
CN202422004662.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-19
Publication Date
2025-06-13
Estimated Expiration
2034-08-19

AI Technical Summary

Technical Problem

The existing square pillow device is prone to retreat during the correction process of the sleeper, resulting in a decrease in calibration efficiency and effect. At the same time, the compactness of the gravel at the lower part of the sleeper is low, making it easy to settle and deflect.

Method used

A non-sharpening hydraulic square pillow is designed, using a horizontal jack and top member to achieve efficient correction of the sleeper through vertical drive components and inserts, and a vibrator is used to improve the compactness of the gravel at the lower part of the sleeper.

Benefits of technology

It effectively avoids the problem of backing during calibration, improves the compactness of the gravel at the lower part of the sleeper, and prevents settlement and deflection of the sleeper during use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a non-ballast-raking type hydraulic sleeper squaring device which comprises a horizontal jack installed on a base, a jacking piece installed on an oil cylinder rod of the horizontal jack, an installation base movably connected to the base, a plurality of inserting pieces installed on the installation base at intervals, a plurality of clamping pieces installed on the lower end of each inserting piece and a plurality of clamping pieces installed on the lower end of each inserting piece, a vertical driving assembly is installed between the installation base and the base, and a vibrator is installed on the installation base. According to the sleeper correcting device, the sleeper is efficiently corrected, the situation that the sleeper retreats during correction is avoided, the compactness of broken stones on the lower portion of the corrected sleeper can be effectively improved, and the situation that the sleeper settles and / or deflects in the using process is avoided. The sleeper correction device is suitable for the technical field of sleeper correction in railway track maintenance.
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Description

Technical Field

[0001] The utility model belongs to the technical field of railway track maintenance, and specifically relates to a non-ballast-raking hydraulic sleeper aligner. Background Art

[0002] Railway tracks bear the main force of transportation. During long-term operation, due to the combined action of trains and the external temperature and humidity, the sleepers tend to skew. If not dealt with in time, when a train passes through this section, abnormal noises and / or bumps will occur. When the sleepers are severely skewed, the rails are extremely likely to break, leading to traffic accidents, or even derailment. Therefore, it is necessary to regularly inspect the sleepers and correct the skewed sleepers to ensure the safety of train operation. Currently, the commonly used method is to use a sleeper aligner to correct the sleepers. However, the structure of the existing sleeper aligner is similar to that of a jack. The sleeper aligner is placed at the sleeper to be corrected, and through reciprocating pushing and pulling of the control rod, the cylinder rod of the sleeper aligner gradually extends and abuts against the side of the sleeper, continuously driving the cylinder rod to laterally push the sleeper to gradually correct it. However, in actual operation, the rear anchor component of the sleeper aligner will cause the sleeper aligner to move backward when the cylinder rod continuously abuts against the sleeper, resulting in a decrease in the correction efficiency and effect. Moreover, since the middle and lower parts of the sleepers are generally buried below the ballast, it is necessary to clean the ballast at this position before the correction operation, and then refill the ballast after the correction is completed. And after the existing sleeper aligner finishes correcting the sleepers, the compactness of the crushed stones under the sleepers is relatively low, and the sleepers are extremely likely to settle and / or skew under the frequent rolling of trains. Content of the Utility Model

[0003] The utility model provides a non-ballast-raking hydraulic sleeper aligner, which can efficiently correct sleepers, avoid backward movement during correction, effectively improve the compactness of the crushed stones under the corrected sleepers, and avoid settlement and / or skew of the sleepers during use.

[0004] To achieve the above object, the technical solutions adopted by the utility model are as follows:

[0005] A non-ballast-raking hydraulic sleeper aligner includes a horizontal jack installed on a base, a top contact member installed on the cylinder rod of the horizontal jack, a mounting seat movably connected to the base, a plurality of insertion members installed at intervals on the mounting seat, the lower ends of the insertion members extending into the ballast, a vertical driving component installed between the mounting seat and the base, and a vibrator installed on the mounting seat.

[0006] Further, the oil cylinder rod includes a cylinder rod body, a rotating cap is rotatably connected to one end of the cylinder rod body, a first hinge ear is formed at one end of the rotating cap, the abutting member includes an abutting head, a second hinge ear is formed at one end of the abutting head, and the first hinge ear and the second hinge ear are hinged by a hinge shaft.

[0007] Further, a protruding frustum is formed at the end of the abutting head away from the second hinge ear, the small-diameter end of the protruding frustum is away from the second hinge ear, and an abutting surface is formed at the small-diameter end of the protruding frustum.

[0008] Further, a plurality of strip-shaped grooves are formed on the circumferential surface of the protruding frustum, these strip-shaped grooves are evenly arranged along the circumferential direction of the protruding frustum, and each strip-shaped groove extends from one end of the abutting head to the small-diameter end of the protruding frustum.

[0009] Further, the vertical driving assembly includes a vertical lead screw threadedly connected to the transmission seat, the transmission seat is fixedly formed on the base, the lower end of the vertical lead screw is rotatably connected to the mounting seat, and an operating handwheel is installed at the upper end of the vertical lead screw.

[0010] Further, connecting wings are symmetrically formed on both sides of the mounting seat, the number of inserts is three, namely one main insert and two side inserts, the main insert is connected to the center position of the mounting seat, and the two side inserts are respectively assembled on the two connecting wings.

[0011] Further, a plurality of strip-shaped assembly holes are formed on each connecting wing, these strip-shaped assembly holes are arranged at intervals along the extending direction of the horizontal jack, and each strip-shaped assembly hole extends along the extending direction of the horizontal jack, and the side insert is fixed to the connecting wing through the corresponding strip-shaped assembly hole.

[0012] Further, a spherical joint is formed at the upper part of the side insert, a connecting block is assembled in the strip-shaped assembly hole, a bowl-shaped assembly cavity is formed at the center of the connecting block, the spherical joint is movably assembled in the bowl-shaped assembly cavity, and at least one locking bolt is threadedly connected to the connecting block, and the end of the locking bolt extends into the bowl-shaped assembly cavity and tightly abuts against the circumferential surface of the spherical joint.

[0013] Further, the insert includes an insertion rod, an insertion tip is formed at the lower end of the insertion rod, the upper end of the insertion rod passes through the mounting seat, and two first fastening nuts are threadedly connected to the insertion rod, and the two first fastening nuts are tightened at the upper and lower ends of the mounting seat.

[0014] Further, the insert includes an insertion plate. The lower end of the insertion plate is bent towards the extending direction of the horizontal jack, and the width of the insertion plate decreases downward along the vertical direction. Reinforcing ribs are formed on the back surface of the insertion plate, a fixing seat is formed at the upper end of the insertion plate, a connecting sleeve is formed on the fixing seat, the lower end of the transfer rod is threadedly connected to the connecting sleeve, the upper end of the transfer rod passes through the mounting seat, and two second fastening nuts are threadedly connected to the transfer rod. The two second fastening nuts are tightened at the upper and lower ends of the mounting seat.

[0015] Due to the adoption of the above structure, compared with the prior art, the technical progress achieved by the present utility model is as follows: When calibrating the sleeper, the horizontal jack is placed at the position of the sleeper to be calibrated, and then the vertical driving assembly is controlled to act, so that it drives the mounting seat to move downward. The mounting seat drives the multiple inserts on it to insert into the ballast. After that, according to the depth of the side of the sleeper buried in the ballast, the drooping angle of the abutting member is controlled so that the lower part of the abutting member extends into the ballast to a predetermined depth. Then, one end of the operating rod is inserted into the operating sleeve of the horizontal jack, and the operating rod is reciprocally pushed and pulled, so that the abutting member at the end of the oil cylinder rod gradually moves towards the sleeper until the abutting member abuts against the side surface of the sleeper. At this time, the abutting member cuts open the crushed stones at the position to be abutted on the side surface of the sleeper, so as to facilitate the abutting member to positively push the side surface of the track. Moreover, due to the limitation of the insert, the situation of the horizontal jack retreating and unloading force during the pushing process is avoided. After the calibration is completed, the vibrator is turned on to vibrate the sleeper and the crushed stones nearby. At the same time, the insert also vibrates correspondingly, so that the horizontal jack and the insert vibrate synchronously, realizing the function of vibrating and compacting the crushed stones near the sleeper. Finally, the crushed stones near and under the sleeper are compacted. In summary, the present utility model calibrates the sleeper efficiently, avoids the situation of retreating during calibration, can effectively improve the compactness of the crushed stones under the calibrated sleeper, and avoids the situation of settlement and / or skew of the sleeper during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0017] In the drawings:

[0018] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 is a schematic structural diagram of another angle of an embodiment of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the embodiment of the present utility model after removing the horizontal jack;

[0021] Figure 4 Structural schematic diagram of the connection between the insertion rod and the connection block in the embodiment of the present utility model;

[0022] Figure 5 is Figure 4 axial sectional view of the structure shown;

[0023] Figure 6 Structural schematic diagram of the connection between the oil cylinder rod and the abutting member in the embodiment of the present utility model;

[0024] Figure 7 Structural schematic diagram after installing multiple insertion plates in the embodiment of the present utility model;

[0025] Figure 8 Structural schematic diagram of the connection between the insertion plate and the adapter rod in the embodiment of the present utility model.

[0026] Labeled components: 1 - horizontal jack, 2 - oil cylinder rod, 201 - cylinder rod body, 202 - first hinge ear, 203 - rotating cap, 3 - abutting member, 301 - abutting head, 302 - extending round table, 303 - abutting surface, 304 - strip groove, 305 - second hinge ear, 4 - operating sleeve, 5 - base, 6 - mounting seat, 7 - connecting wing, 8 - strip assembly hole, 9 - insert, 10 - side insert, 1001 - insertion rod, 1002 - insertion tip, 1003 - articulating ball, 11 - first fastening nut, 12 - transmission seat, 13 - vertical lead screw, 14 - operating handwheel, 15 - vibrator, 16 - connection block, 17 - assembly groove, 18 - locking bolt, 19 - insertion plate, 1901 - fixing seat, 1902 - connection sleeve, 1903 - toothed plate body, 1904 - reinforcing rib, 20 - adapter rod, 21 - second fastening nut. Detailed implementation manners

[0027] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0028] The present utility model discloses a non - ballast - cleaning type hydraulic sleeper square aligner, as Figures 1-8As shown in the figure, it includes a horizontal jack 1, a base 5, a top connection piece 3, a mounting seat 6, a vertical drive assembly and a vibrator 15. Among them, the base 5 is installed at one end of the horizontal jack 1, and the top connection piece 3 is installed at the end of the cylinder rod 2 of the horizontal jack 1. The mounting seat 6 is movably connected to the base 5, and a plurality of insertion pieces 9 are installed at intervals on the mounting seat 6, and the lower end of each insertion piece 9 extends into the ballast. The vertical drive assembly is installed between the mounting seat 6 and the base 5, and the vibrator 15 is installed on the mounting seat 6. The working principle and advantages of the present invention are as follows: When the present invention corrects the sleeper, the horizontal jack 1 is placed at the position of the sleeper to be corrected, and then the vertical drive assembly is controlled to act, so that it drives the mounting seat 6 to move downward, and the mounting seat 6 drives the plurality of insertion pieces 9 thereon to be inserted into the ballast. After that, according to the depth of the side of the sleeper buried in the ballast, the drooping angle of the top connection piece 3 is controlled so that the lower part of the top connection piece 3 extends into the predetermined depth of the ballast; then, one end of the operating rod is inserted into the operating sleeve 4 of the horizontal jack 1, and the operating rod is reciprocally pushed and pulled, so that the top connection piece 3 at the end of the cylinder rod 2 gradually moves towards the sleeper until the top connection piece 3 abuts against the side of the sleeper. At this time, the top connection piece 3 cuts open the gravel at the position to be abutted on the side of the sleeper, so as to facilitate the top connection piece 3 to positively push the side of the track; and due to the limitation of the insertion piece 9, the situation of the horizontal jack 1 retreating and unloading force during the pushing process is avoided. When the correction is completed, the vibrator 15 is turned on to vibrate the sleeper and the nearby gravel, and at the same time the insertion piece 9 also vibrates accordingly, so that the horizontal jack 1 and the insertion piece 9 vibrate synchronously, realizing the function of vibrating and compacting the gravel near the sleeper, and finally making the gravel near and under the sleeper dense. To sum up, the present invention efficiently corrects the sleeper, avoids the situation of retreating during correction, can effectively improve the density of the gravel under the corrected sleeper, and avoids the situation of settlement and / or skew of the sleeper during use.

[0029] As a preferred embodiment of the present invention, as Figure 6As shown in the figure, the cylinder rod 2 includes a cylinder rod body 201. At one end of the cylinder rod body 201, a rotating cap 203 is rotatably connected. At one end of the rotating cap 203 away from the cylinder rod body 201, a first hinge ear 202 is constructed. In this embodiment, the abutting member 3 includes an abutting head 301. At one end of the abutting head 301, a second hinge ear 305 is constructed. The first hinge ear 202 and the second hinge ear 305 are hinged by a hinge shaft. By rotating the rotating cap 203 by a certain angle, the adjustment of the angle of the abutting head 301 along the axis of the cylinder rod body 201 is realized. By rotating the abutting head 301 by a certain angle along the axis of the hinge shaft, the adjustment of the drooping degree of the abutting head 301 is realized. Among them, at one end of the abutting head 301 away from the second hinge ear 305, an extending frustum 302 is constructed. The small-diameter end of the extending frustum 302 is away from the second hinge ear 305, and an abutting surface 303 is formed at the small-diameter end of the extending frustum 302. In this embodiment, a plurality of strip-shaped grooves 304 are formed on the circumferential surface of the extending frustum 302. These strip-shaped grooves 304 are uniformly arranged along the circumferential direction of the extending frustum 302. Each strip-shaped groove 304 extends from one end of the abutting head 301 to the small-diameter end of the extending frustum 302. The working principle and advantages of this embodiment are as follows: According to the different depths of the lower part of the sleeper extending into the ballast, the drooping degree of the abutting head 301 is adjusted, so as to move the abutting head 301 towards a predetermined position on the side wall of the sleeper. And during the movement, the extending frustum 302 can separate the crushed stones at the position of the sleeper to be abutted until the abutting surface 303 of the extending frustum 302 abuts against the side surface of the sleeper.

[0030] As a preferred embodiment of the present invention, as Figure 2 、 3 shown, the vertical driving assembly includes a transmission seat 12, a vertical lead screw 13 and an operating handwheel 14. Among them, the transmission seat 12 is fixedly welded on the base 5. The vertical lead screw 13 is threadedly connected with the transmission seat 12. Moreover, the lower end of the vertical lead screw 13 is rotatably connected with the mounting seat 6, and the operating handwheel 14 is installed at the upper end of the vertical lead screw 13. In this embodiment, by rotating the operating handwheel 14, the vertical lead screw 13 is driven to rotate. During the rotation of the vertical lead screw 13, it gradually moves downward, thereby driving the mounting seat 6 to move vertically, so that the insert 9 installed on the mounting seat 6 gradually inserts into the ballast, achieving the effect of anchoring the horizontal jack 1 in the ballast.

[0031] As a preferred embodiment of the present invention, as Figure 2 、 3As shown in the figure, connection wings 7 are symmetrically constructed on both sides of the mounting base 6. The number of inserts 9 is three, including one main insert and two side inserts 10. Among them, the main insert is connected to the center position of the mounting base 6, and the two side inserts 10 are respectively assembled on the two connection wings 7, so that the inserts 9 are anchored on the ballast in a triangular arrangement, improving the fixing strength between the horizontal jack 1 and the ballast, and thus being able to effectively resist the reaction force of the sleeper on the horizontal jack 1. In this embodiment, the positions of the two side inserts 10 on the two connection wings 7 can be adjusted so that the two side inserts 10 cooperate with the main insert to be firmly anchored on the ballast. Specifically, a plurality of strip-shaped assembly holes 8 are formed on each connection wing 7, and these strip-shaped assembly holes 8 are arranged at intervals along the jacking direction of the horizontal jack 1; and each strip-shaped assembly hole 8 extends along the jacking direction of the horizontal jack 1, and the side insert 10 is fixed to the connection wing 7 through the corresponding strip-shaped assembly hole 8.

[0032] As a preferred embodiment of the present utility model, as Figure 4 , 5 shown, a spherical joint 1003 is constructed on the upper part of the side insert 10, and a connection block 16 is assembled in the strip-shaped assembly hole 8. Assembly grooves 17 are respectively constructed on both sides of the connection block 16, and the assembly grooves 17 are clamped on the side wall of the strip-shaped assembly hole 8. In this embodiment, at least one fixing bolt can be threadedly connected to the upper surface of the connection block 16, and one end of the fixing bolt extends into the assembly groove 17 and tightly abuts against the part of the mounting base 6 close to the strip-shaped assembly hole 8, so as to realize the locking of the connection block 16 and the mounting base 6. A bowl-shaped assembly cavity is constructed at the center of the connection block 16, and the above-mentioned spherical joint 1003 is movably assembled in the bowl-shaped assembly cavity. At least one locking bolt 18 is threadedly connected to the connection block 16, and the end of the locking bolt 18 extends into the bowl-shaped assembly cavity and tightly abuts against the circumferential surface of the spherical joint 1003, so as to realize the locking of the spherical joint 1003 and the connection block 16. In this embodiment, by loosening the locking bolt 18, the spherical joint 1003 can rotate in the bowl-shaped assembly cavity, and then the inclination angles of the two side inserts 10 are adjusted so that the lower ends of the two side inserts 10 are both inclined forward; in this way, the two side inserts 10 cooperate with the main insert to be more firmly anchored to the ballast, and during the subsequent vibrating operation, the side inserts 10 inclined forward drive the crushed stones between the two side inserts 10 and the sleeper to gradually move towards the side and lower part of the sleeper under the vibration of the vibrator 15, so that the crushed stones under the sleeper are gradually compacted.

[0033] As a preferred embodiment of the present utility model, as Figure 3 , 5As shown, the insert 9 includes an insertion rod 1001, and an insertion tip 1002 is formed at the lower end of the insertion rod 1001 to facilitate the insertion of the insertion rod 1001 into the ballast. The upper end of the insertion rod 1001 passes through the mounting seat 6. Two first fastening nuts 11 are threadedly connected to the insertion rod 1001, and the two first fastening nuts 11 are tightened at the upper and lower ends of the mounting seat 6.

[0034] As a preferred embodiment of the present invention, as Figure 7 、 8 shown, the insert 9 includes an insertion plate 19. The insertion plate 19 includes a toothed plate body 1903. The lower end of the toothed plate body 1903 is bent in the extending direction of the jack 1, and the width of the toothed plate body 1903 decreases downward in the vertical direction, thereby facilitating the smooth insertion of the toothed plate body 1903 into the ballast. In this embodiment, a reinforcing rib 1904 is formed on the back of the toothed plate body 1903 to strengthen the strength of the toothed plate body 1903. Since the toothed plate body 1903 is adopted in this embodiment, the ability of the insert 9 to resist the reaction force is enhanced, and during the vibration of the vibrator 15, the area and direction of the action of the vibrating toothed plate body 1903 are more extensive, so that the gravel under the sleeper can be compacted fully and quickly. In order to facilitate the disassembly, replacement of the toothed plate body 1903 in this embodiment, the measures taken are that a fixing seat 1901 is formed at the upper end of the insertion plate 19, a connecting sleeve 1902 is formed on the fixing seat 1901, the lower end of the adapter rod 20 is threadedly connected to the connecting sleeve 1902, the upper end of the adapter rod 20 passes through the mounting seat 6, and two second fastening nuts 21 are threadedly connected to the adapter rod 20, and the two second fastening nuts 21 are tightened at the upper and lower ends of the mounting seat 6.

[0035] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A non-ballasting hydraulic square pillow device, characterized in that: It includes a horizontal jack installed on a base, a top connection piece is installed on the cylinder rod of the horizontal jack, a mounting seat is movably connected to the base, a plurality of inserts are installed on the mounting seat at intervals, the lower end of each insert extends into the ballast, a vertical drive assembly is installed between the mounting seat and the base, and a vibrator is installed on the mounting seat.

2. The non-ballasted hydraulic square pillow device according to claim 1, characterized in that: The cylinder rod includes a cylinder rod body, a rotating cap is rotatably connected to one end of the cylinder rod body, a first hinged ear is constructed at one end of the rotating cap, the top connecting member includes a top joint, a second hinged ear is constructed at one end of the top joint, and the first hinged ear and the second hinged ear are hinged via a hinge shaft.

3. The non-ballasted hydraulic square pillow device according to claim 2, characterized in that: A top extending truncated cone is constructed at one end of the top joint away from the second hinged ear, the small diameter end of the top extending truncated cone is away from the second hinged ear, and a top connection surface is formed at the small diameter end of the top extending truncated cone.

4. The non-ballasted hydraulic square pillow device according to claim 3, characterized in that: A plurality of strip grooves are provided on the circumferential surface of the top-extending truncated cone. The strip grooves are evenly arranged along the circumference of the top-extending truncated cone. Each of the strip grooves extends from one end of the top joint to the small-diameter end of the top-extending truncated cone.

5. The non-ballasted hydraulic square pillow device according to claim 1, characterized in that: The vertical drive assembly includes a vertical lead screw threadedly connected to a transmission seat, the transmission seat is fixedly structured on a base, the lower end of the vertical lead screw is rotatably connected to a mounting seat, and an operating hand wheel is installed at the upper end of the vertical lead screw.

6. The non-ballasted hydraulic square sleeper according to claim 1, characterized in that: Connecting wings are symmetrically constructed on both sides of the mounting seat. There are three inserts, namely a main insert and two side inserts. The main insert is connected to the center of the mounting seat, and the two side inserts are respectively assembled on the two connecting wings.

7. The non-ballasted hydraulic square pillow device according to claim 6, characterized in that: A plurality of strip assembly holes are provided on each of the connecting wings, and the strip assembly holes are arranged at intervals along the top extension direction of the horizontal jack, and each of the strip assembly holes extends along the top extension direction of the horizontal jack, and the side plug-in is fixed to the connecting wing through the corresponding strip assembly holes.

8. The non-ballasted hydraulic square pillow device according to claim 7, characterized in that: A joint ball is constructed on the upper part of the side plug-in, a connecting block is assembled in the strip-shaped assembly hole, a bowl-shaped assembly cavity is constructed at the center of the connecting block, the joint ball is movably assembled in the bowl-shaped assembly cavity, at least one locking bolt is threadedly connected to the connecting block, and the end of the locking bolt extends into the bowl-shaped assembly cavity and tightly abuts against the circumferential surface of the joint ball.

9. The non-ballasted hydraulic square sleeper according to claim 1, characterized in that: The insert comprises an insert rod, an insert tip is constructed at the lower end of the insert rod, the upper end of the insert rod passes through the mounting seat, two first fastening nuts are threadedly connected to the insert rod, and the two first fastening nuts are screwed to the upper and lower ends of the mounting seat.

10. The non-ballasted hydraulic square pillow device according to claim 1, characterized in that: The insert includes an insert plate, the lower end of which is bent toward the top extension direction of the horizontal jack, and the width of the insert plate decreases downward in the vertical direction. A reinforcing rib is constructed on the back of the insert plate, and a fixing seat is constructed at the upper end of the insert plate. A connecting sleeve is constructed on the fixing seat. The lower end of the transfer rod is threadedly connected to the connecting sleeve, and the upper end of the transfer rod passes through the mounting seat. Two second fastening nuts are threadedly connected to the transfer rod, and the two second fastening nuts are screwed to the upper and lower ends of the mounting seat.