Supporting plate structure of pipe gang saw and pipe gang saw

Abstract

The utility model provides a supporting plate structure of a pipe gang saw and the pipe gang saw, the supporting plate structure of the pipe gang saw comprises a buffering base plate and a wear-resisting working plate connected to the buffering base plate, and the buffering base plate is provided with a locking assembly and a jacking assembly; the locking assembly is provided with a sliding rod which is inserted into the side wall of the wear-resistant working plate in a sliding manner in the horizontal direction, and the locking assembly is used for locking the wear-resistant working plate to the buffer base plate; the jacking assembly is provided with a jacking rod slidably connected to the buffering base plate in the vertical direction, and when the locking assembly is in the unlocking state, the jacking rod can jack the wear-resisting working plate upwards till the wear-resisting working plate is separated from the buffering base plate. According to the supporting plate structure of the pipe gang saw, the wear-resisting working plate is locked above the buffering base plate through the locking assembly, and the hardness and the wear resistance of the supporting plate structure can be improved; the wear-resistant working plate is jacked upwards through upward sliding of the jacking rod, so that the wear-resistant working plate is quickly disassembled, the maintenance efficiency of the supporting plate structure is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tube gang saws, and in particular relates to a supporting plate structure of a tube gang saw. Background Art

[0002] In the production process of seamless steel pipes, the role of the pipe gang saw is to cut off the head and tail areas of the hot-rolled seamless steel pipes and cut the long steel pipes to the required length. The support plate of the pipe gang saw plays the role of fixing and supporting the steel pipes during the sawing process. However, seamless steel pipes often have head and tail quality defects such as bent ends or "sickles" and "hooks" during production. When these defective steel pipes are transported to the support plate, the surface of the support plate will be scratched by these defects to form "bumps", which will scratch the outer wall of the steel pipe, thus affecting the appearance quality of the seamless steel pipe.

[0003] In the prior art, the support plate of the tube gang saw is mainly made of a whole piece of low alloy steel plate and subjected to heat treatment such as quenching and tempering to enhance the hardness of the support plate. However, when a "convex" defect appears on the surface of the support plate, the whole support plate needs to be removed and its surface needs to be repaired. The severely worn support plate needs to be replaced as a whole, which not only delays the production progress, but also increases the production cost. Utility Model Content

[0004] The embodiment of the utility model provides a support plate structure of a pipe gang saw, which can increase the hardness and wear resistance of the support plate structure and can realize the rapid disassembly of the wear-resistant working plate, thereby improving the efficiency of the maintenance of the support plate structure and helping to reduce production costs.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: in the first aspect, a support plate structure of a pipe gang saw is provided, including a buffer base plate connected to the frame and a wear-resistant working plate connected to the buffer base plate, the buffer base plate is provided with a locking assembly located on the side of the wear-resistant working plate and a lifting assembly located at the bottom of the wear-resistant working plate; wherein the locking assembly has a sliding rod which is slidably inserted on the side wall of the wear-resistant working plate in a horizontal direction, and the locking assembly is used to lock the wear-resistant working plate to the buffer base plate; the lifting assembly has a push rod which is slidably connected to the buffer base plate in an up and down direction, and when the locking assembly is in an unlocked state, the push rod can lift the wear-resistant working plate upward to separate it from the buffer base plate.

[0006] As another embodiment of the utility model, a receiving groove with an opening facing upward is provided on the buffer base plate, the receiving groove is arranged to penetrate along the traveling direction of the steel pipe, and the wear-resistant working plate is located in the receiving groove.

[0007] As another embodiment of the utility model, the side wall of the wear-resistant working plate is provided with a plug-in hole that cooperates with the sliding rod, and the buffer base plate is provided with a sliding groove located on the side wall of the accommodating groove. The sliding rod is slidably connected in the sliding groove and can slide horizontally to be plugged into the plug-in hole.

[0008] As another embodiment of the utility model, the locking assembly also includes an elastic member arranged in the sliding groove and a pressing member connected to the buffer base plate and extending in the up and down directions. The elastic member is located between the bottom wall of the sliding groove and the sliding rod, and is used to elastically push the sliding rod to slide toward the side close to the wear-resistant working plate. An extrusion groove that slides with the pressing member is provided on the peripheral wall of the sliding rod. The extrusion groove has a wedge-shaped guide surface that gradually tilts from top to bottom toward the side close to the wear-resistant working plate. The lower part of the pressing member is pressed against the wedge-shaped guide surface, and is used to drive the sliding rod to slide toward the side away from the wear-resistant working plate.

[0009] As another embodiment of the utility model, the lower pressure piece includes a pressure rod threadedly connected to the buffer base plate and a pressure block arranged at the lower end of the pressure rod. The pressure block is slidably connected to the buffer base plate along the up and down directions. The pressure rod is used to press the pressure block downward so that the bottom surface of the pressure block presses against the wedge-shaped guide surface.

[0010] As another embodiment of the utility model, the lifting assembly also includes a pull rod slidably connected to the buffer base plate in a horizontal direction, the outer periphery of the pull rod is provided with an axially extending installation groove, the installation groove is provided with a guide bar block extending gradually upward from the outer wall of the buffer base plate to the inside of the buffer base plate, and the outer periphery of the jacking rod is provided with a guide groove that slidably cooperates with the guide bar block.

[0011] As another embodiment of the utility model, the inner end of the guide bar is connected to the inner groove wall of the installation groove, and a passage for the ejector rod to pass through from top to bottom is formed between the guide bar and the outer groove wall of the installation groove.

[0012] As another embodiment of the utility model, a positioning column extending in the radial direction of the pull rod is threadedly connected to the pull rod, and the positioning column is used to limit the sliding range of the pull rod.

[0013] As another embodiment of the utility model, the plug hole is centrally arranged in the thickness direction of the wear-resistant working plate.

[0014] The beneficial effect of the support plate structure of a pipe gang saw provided by the utility model is that: compared with the prior art, the support plate structure of a pipe gang saw provided by the utility model utilizes a locking assembly to lock the wear-resistant working plate above the buffer base plate, so that the wear-resistant working plate is directly in contact with the surface of the steel pipe being sawed, which helps to improve the hardness and wear resistance of the support plate structure and extend the service life of the support plate structure; at the same time, when the wear-resistant working plate needs to be replaced, the sliding rod is slid to unlock the locking assembly, and the wear-resistant working plate is lifted upward by sliding the push rod, so that the wear-resistant working plate is separated from the buffer base plate, so as to facilitate the rapid disassembly of the wear-resistant working plate, thereby improving the efficiency of maintenance of the support plate structure and helping to reduce production costs.

[0015] In a second aspect, an embodiment of the utility model further provides a pipe gang saw.

[0016] The beneficial effects of the pipe gang saw provided in this embodiment are the same as the beneficial effects of the support plate structure of the aforementioned pipe gang saw, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A structural schematic diagram of the working state of the support plate structure of the pipe gang saw provided by an embodiment of the utility model;

[0019] Figure 2 A schematic cross-sectional view of a support plate structure of a pipe gang saw provided by an embodiment of the utility model;

[0020] Figure 3 For the utility model embodiment Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0021] Figure 4 A schematic diagram of the structure of the pull rod provided in an embodiment of the utility model;

[0022] Figure 5 A schematic structural diagram of a push rod provided in an embodiment of the utility model.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Buffer base plate; 11. Accommodating groove; 12. Sliding groove; 13. Horizontal mounting hole; 14. Vertical mounting hole; 2. Wear-resistant working plate; 21. Plug-in hole; 3. Locking assembly; 31. Sliding rod; 311. Wedge-shaped guide surface; 32. Elastic member; 33. Pressing member; 331. Pressing block; 332. Pressing rod; 4. Lifting assembly; 41. Pushing rod; 411. Lifting guide groove; 42. Pull rod; 421. Guide strip; 422. Mounting groove; 423. Through cavity; 43. Positioning column; 10. Steel pipe; 20. Frame. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on another element or indirectly on another element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meanings of "multiple" and "several" are two or more, unless otherwise clearly and specifically defined.

[0027] Please also read Figure 1 and Figure 5 , now the support plate structure of a pipe gang saw provided by the utility model is described. The support plate structure of the pipe gang saw includes a buffer base plate 1 connected to a frame 20 and a wear-resistant working plate 2 connected to the buffer base plate 1, and the buffer base plate 1 is provided with a locking assembly 3 located at the side of the wear-resistant working plate 2 and a lifting assembly 4 located at the bottom of the wear-resistant working plate 2; wherein the locking assembly 3 has a sliding rod 31 that is inserted and slidably connected to the side wall of the wear-resistant working plate 2 in a horizontal direction, and the locking assembly 3 is used to lock the wear-resistant working plate 2 to the buffer base plate 1; the lifting assembly 4 has a push rod 41 that is slidably connected to the buffer base plate 1 in an up-down direction, and when the locking assembly 3 is in an unlocked state, the push rod 41 can lift the wear-resistant working plate 2 upward to separate from the buffer base plate 1.

[0028] Compared with the prior art, the support plate structure of a pipe gang saw provided in the present embodiment utilizes a locking assembly 3 to lock the wear-resistant working plate 2 above the buffer base plate 1, so that the wear-resistant working plate 2 is in direct contact with the surface of the steel pipe 10 being sawed, which helps to improve the hardness and wear resistance of the support plate structure and extend the service life of the support plate structure; at the same time, when the wear-resistant working plate 2 needs to be replaced, the sliding rod 31 is sliding to unlock the locking assembly 3, and the wear-resistant working plate 2 is lifted upward by sliding up the push rod 41 to separate the wear-resistant working plate 2 from the buffer base plate 1, so as to facilitate the rapid disassembly of the wear-resistant working plate 2, thereby improving the efficiency of the maintenance of the support plate structure and helping to reduce production costs.

[0029] It should be noted that the support plate structure of the tube gang saw is connected to the frame 20 and is located below the sawing blade. The rows of steel pipes 10 are pushed axially to the support plate structure of the tube gang saw. The support plate structure of the tube gang saw supports the tube rows and clamps the tube rows with a clamping device. The high-speed rotating sawing blade moves downward to cut the steel pipes 10.

[0030] In this embodiment, the support plate structure of the pipe gang saw adopts a combination structure of a wear-resistant working plate 2 and a buffer base plate 1, wherein the wear-resistant working plate 2 is made of 40CrMnMo alloy steel after quenching and tempering heat treatment and then ion nitriding or gas nitriding, and the hardness of the wear-resistant working plate 2 can reach 750-1000HV, with extremely high hardness and wear resistance. The buffer base is made of 40CrMnMo alloy steel after quenching and high-temperature tempering, and has good toughness and impact resistance, and can provide base support and buffer clamping pressure when sawing the steel pipe 10.

[0031] As the pipe gang saw is used for a longer time, when the support plate structure of the pipe gang saw is worn and needs to be repaired or replaced, only the wear-resistant working plate 2 needs to be repaired or replaced, and there is no need to disassemble or replace the entire support plate structure, so that the support plate structure has good economic benefits.

[0032] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 1 and Figure 2 The buffer substrate 1 is provided with a receiving groove 11 opening upward, the receiving groove 11 is arranged to penetrate along the traveling direction of the steel pipe 10, and the wear-resistant working plate 2 is located in the receiving groove 11.

[0033] In this embodiment, the wear-resistant working plate 2 is arranged in the receiving groove 11, which is convenient for positioning the wear-resistant working plate 2 when installing it and for locking the locking assembly 3. The receiving groove 11 is arranged to penetrate along the traveling direction of the steel pipe 10, which can prevent the buffer base plate 1 from interfering with the traveling steel pipe 10.

[0034] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 2 and Figure 3 A plug-in hole 21 is provided on the side wall of the wear-resistant working plate 2, which is plugged into the sliding rod 31. A sliding groove 12 is provided on the buffer base plate 1 on the side wall of the accommodating groove 11. The sliding rod 31 is slidably connected in the sliding groove 12 and can slide horizontally to be plugged into the plug-in hole 21.

[0035] In this embodiment, the inner diameter of the plug-in hole 21, the inner diameter of the sliding groove 12 and the diameter of the sliding rod 31 are kept consistent. When the wear-resistant working plate 2 is placed in the accommodating groove 11, the axis of the plug-in hole 21 coincides with the axis of the sliding groove 12, and the inner end of the sliding rod 31 is inserted into the plug-in hole 21, thereby limiting the displacement of the wear-resistant working plate 2 relative to the buffer substrate 1, that is, locking the wear-resistant working plate 2 on the buffer substrate 1.

[0036] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3 The locking assembly 3 also includes an elastic member 32 arranged in the sliding groove 12 and a pressing member 33 connected to the buffer base plate 1 and extending in the up-down direction. The elastic member 32 is located between the bottom wall of the sliding groove 12 and the sliding rod 31, and is used to elastically push the sliding rod 31 to slide toward the side close to the wear-resistant working plate 2. An extrusion groove slidably matched with the pressing member 33 is provided on the peripheral wall of the sliding rod 31. The extrusion groove has a wedge-shaped guide surface 311 gradually inclined from top to bottom toward the side close to the wear-resistant working plate 2. The lower part of the pressing member 33 is pressed against the wedge-shaped guide surface 311, and is used to drive the sliding rod 31 to slide toward the side away from the wear-resistant working plate 2.

[0037] In this embodiment, when removing the wear-resistant working plate 2, the wear-resistant working plate 2 needs to be unlocked first. Specifically, the pressing member 33 is pressed downward, and since the wedge-shaped guide surface 311 is gradually tilted from top to bottom toward the side close to the wear-resistant working plate 2, the lower part of the pressing member 33 is pressed against the wedge-shaped guide surface 311. The process of the pressing member 33 moving downward causes the slide bar 31 to slide toward the inside of the sliding groove 12, that is, away from the side of the wear-resistant working plate 2, providing space for the pressing member 33 to move downward. When the inner end of the slide bar 31 is completely out of the plug hole 21 on the wear-resistant working plate 2, the wear-resistant working plate 2 is unlocked.

[0038] It should be noted here that when the wear-resistant working plate 2 is unlocked, the elastic member 32 is compressed to generate a thrust force. At this time, the pressing member 33 needs to maintain a downward pressing state to prevent the slide rod 31 from sliding out of the sliding groove 12 under the pushing action of the elastic member 32, thereby hindering the installation of a new wear-resistant working plate 2.

[0039] When the new wear-resistant working plate 2 is loaded into the accommodating groove 11, the pressing piece 33 moves upward, and the wedge-shaped guiding surface 311 is separated from the pressing action of the pressing piece 33. At this time, the sliding rod 31 slides out of the sliding groove 12 under the pushing action of the elastic piece 32, and is inserted into the plug-in hole 21 of the new wear-resistant working plate 2, thereby completing the locking of the new wear-resistant working plate 2.

[0040] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3The lower pressing member 33 includes a pressing rod 332 threadedly connected to the buffer substrate 1 and a pressing block 331 arranged at the lower end of the pressing rod 332. The pressing block 331 is slidably connected to the buffer substrate 1 along the up and down directions. The pressing rod 332 is used to press the pressing block 331 downward so that the bottom surface of the pressing block 331 presses against the wedge-shaped guide surface 311.

[0041] In this embodiment, by utilizing the threaded connection between the pressure rod 332 and the buffer base plate 1, the pressure rod 332 can be rotated to push the pressure block 331 downward. The bottom surface of the pressure block 331 is an inclined surface that slides with the wedge-shaped guide surface 311. When the pressure block 331 moves downward, the inclined surface and the wedge-shaped guide surface 311 slide relative to each other, causing the slide bar 31 to slide to the side away from the wear-resistant working plate 2. At the same time, by utilizing the self-locking characteristics of the thread, the pressure rod 332 can maintain the state of pressing the pressure block 331. After replacing the new wear-resistant working plate 2, the pressure rod 332 is rotated in the opposite direction, and the pressure rod 332 moves upward. Under the action of the elastic member 32, the slide bar 31 slides to the side close to the wear-resistant working plate 2. At the same time, by utilizing the sliding cooperation relationship between the wedge-shaped guide surface 311 and the pressure block 331, the pressure block 331 slides upward and resets.

[0042] It should be noted that the lower end surface of the pressing rod 332 and the top surface of the pressing block 331 are only in abutment with each other and are not connected to each other, so as to avoid the pressing rod 332 driving the pressing block 331 to rotate and interfere with the sliding rod 31.

[0043] Furthermore, a horizontally extending handle is connected to the upper end of the pressure rod 332 to facilitate the operator to rotate the pressure rod 332 .

[0044] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3 , Figure 4 and Figure 5 The lifting assembly 4 also includes a pull rod 42 which is slidably connected to the buffer base plate 1 in a horizontal direction. An axially extending mounting groove 422 is provided on the outer periphery of the pull rod 42. A guide bar 421 which extends gradually upward from the outer wall of the buffer base plate 1 to the inside of the buffer base plate 1 is provided in the mounting groove 422. A guide groove 411 which slidably cooperates with the guide bar 421 is provided on the outer periphery of the lift rod 41.

[0045] In this embodiment, when the wear-resistant working plate 2 is in a locked state, the upper end surface of the push rod 41 is flush with or lower than the bottom surface of the receiving groove 11. The outer end of the pull rod 42 extends to the outside of the buffer base plate 1 and is connected with a pull ring, which is convenient for the operator to pull the pull rod 42. When the wear-resistant working plate 2 needs to be replaced, the locking assembly 3 is first unlocked, and then the pull rod 42 is pulled to the outside of the buffer base plate 1. The sliding fit between the guide bar 421 and the guide groove 411 is used to cause the push rod 41 to slide upward until the upper end of the push rod 41 protrudes from the bottom wall of the receiving groove 11, and then the wear-resistant working plate 2 is lifted and separated from the buffer base plate 1, which is convenient for the wear-resistant working plate 2 to be removed.

[0046] When a new wear-resistant working plate 2 is installed into the receiving groove 11, the bottom surface of the wear-resistant working plate 2 overlaps with the bottom surface of the receiving groove 11, thereby pressing the push rod 41 downward to reset it, and at the same time, the sliding cooperation relationship between the guide bar 421 and the guide groove 411 is used to cause the pull rod 42 to slide into the inside of the buffer base plate 1. The pull rod 42 can also be pushed into the inside of the buffer base plate 1 to drive the push rod 41 to slide down, thereby providing installation space for the wear-resistant working plate 2.

[0047] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3 and Figure 4 The inner end of the guide bar 421 is connected to the inner groove wall of the installation groove 422, and a through cavity 423 for the push rod 41 to pass through from top to bottom is formed between the guide bar 421 and the outer groove wall of the installation groove 422.

[0048] In this embodiment, the side of the buffer substrate 1 is provided with a horizontal mounting hole 13 for mounting the pull rod 42. The buffer substrate 1 is also provided with a vertical mounting hole 14 extending downward from the bottom surface of the accommodating groove 11 for mounting the ejector rod 41. The horizontal mounting hole 13 is communicated with the vertical mounting hole 14. When installing the jacking assembly 4, the pull rod 42 is first installed in the horizontal mounting hole 13, and the pull rod 42 is pushed toward the inside of the buffer substrate 1 so that the passage 423 is aligned with the vertical mounting hole 14. At this time, the ejector rod 41 is then installed in the vertical mounting hole 14. After the guide lifting groove 411 is aligned with the guide bar block 421, the pull rod 42 is pulled outward so that the guide bar block 421 and the guide lifting groove 411 are slidably matched. When the pull rod 42 is pulled outward to guide the lift rod 41, when the lift rod 41 contacts the inner groove wall of the installation groove 422, the pull rod 42 and the lift rod 41 will block each other, thereby preventing the pull rod 42 from continuing to slide outward, thereby improving the stability of the lifting assembly 4.

[0049] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3 A positioning column 43 extending in the radial direction of the pull rod 42 is threadedly connected to the pull rod 42 , and the positioning column 43 is used to limit the sliding range of the pull rod 42 .

[0050] In this embodiment, when the push rod 41 retracts into the vertical mounting hole 14, if the pull rod 42 continues to slide into the horizontal mounting hole 13, the push rod 41 will slide into the cavity 423 along the guide bar 421, causing the guide groove 411 to separate from the guide bar 421. Therefore, a positioning column 43 is provided to block the outer wall of the buffer base plate 1 to prevent the pull rod 42 from excessively sliding into the inside of the horizontal mounting hole 13, thereby improving the stability of the lifting assembly 4. The positioning column 43 can be a hexagonal head bolt.

[0051] As a specific implementation of the support plate structure of a pipe gang saw provided by the utility model, see Figure 3 The plug-in hole 21 is arranged in the center of the wear-resistant working plate 2 in the thickness direction.

[0052] In this embodiment, when the top surface of the wear-resistant working plate 2 is seriously worn, the wear-resistant working plate 2 can be removed and turned over and placed in the receiving groove 11, that is, the damaged top surface of the wear-resistant working plate 2 faces downward and the flat bottom surface faces upward for continued use. The plug hole 21 is arranged in the center of the thickness direction of the wear-resistant working plate 2, that is, the distance between the central axis of the plug hole 21 and the bottom surface of the wear-resistant working plate 2 is equal to the distance between the central axis of the plug hole 21 and the top surface of the wear-resistant working plate 2, so that even if the wear-resistant working plate 2 is turned over for installation, the slide bar 31 can be plugged into the plug hole 21 to lock the wear-resistant working plate 2.

[0053] Furthermore, at least two locking components 3 are provided and are symmetrically arranged on both sides of the wear-resistant working plate 2, and at least two lifting components 4 are provided and are symmetrically arranged on both sides of the bottom of the wear-resistant working plate 2 to ensure the stability of the locking state of the wear-resistant working plate 2 and the stability of the disassembly process.

[0054] Based on the same inventive concept, an embodiment of the present application further provides a pipe gang saw, comprising the support plate structure of the pipe gang saw proposed in any of the aforementioned items.

[0055] The beneficial effects of the pipe gang saw provided in this embodiment are the same as the beneficial effects of the support plate structure of the aforementioned pipe gang saw, and will not be described in detail here.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support plate structure for a pipe gang saw, characterized in that: It comprises a buffer base connected to the frame and a wear-resistant working plate connected to the buffer base, wherein the buffer base is provided with a locking assembly located at the side of the wear-resistant working plate and a lifting assembly located at the bottom of the wear-resistant working plate; Among them, the locking assembly has a sliding rod that is slidably inserted on the side wall of the wear-resistant working plate in a horizontal direction, and the locking assembly is used to lock the wear-resistant working plate to the buffer base plate; the lifting assembly has a push rod that is slidably connected to the buffer base plate in an up and down direction. When the locking assembly is in an unlocked state, the push rod can lift the wear-resistant working plate upward to separate it from the buffer base plate.

2. A support plate structure for a pipe gang saw according to claim 1, characterized in that: The buffer base plate is provided with a receiving groove opening upward, the receiving groove is arranged to penetrate along the traveling direction of the steel pipe, and the wear-resistant working plate is located in the receiving groove.

3. The support plate structure of a pipe gang saw according to claim 2, characterized in that: The side wall of the wear-resistant working plate is provided with a plug-in hole that cooperates with the sliding rod, and the buffer base plate is provided with a sliding groove located on the side wall of the accommodating groove. The sliding rod is slidably connected in the sliding groove and can slide horizontally to be plugged into the plug-in hole.

4. The support plate structure of a pipe gang saw according to claim 3, characterized in that: The locking assembly also includes an elastic member arranged in the sliding groove and a pressing member connected to the buffer base plate and extending in the up-down direction. The elastic member is located between the bottom wall of the sliding groove and the sliding rod and is used for elastically pushing the sliding rod to slide toward the side close to the wear-resistant working plate. An extrusion groove slidably matched with the pressing member is provided on the peripheral wall of the sliding rod. The extrusion groove has a wedge-shaped guide surface that gradually inclines from top to bottom toward the side close to the wear-resistant working plate. The lower part of the pressing member is pressed against the wedge-shaped guide surface to drive the sliding rod to slide toward the side away from the wear-resistant working plate.

5. The support plate structure of a pipe gang saw according to claim 4, characterized in that: The pressing member includes a pressing rod threadedly connected to the buffer base plate and a pressing block arranged at the lower end of the pressing rod. The pressing block is slidably connected to the buffer base plate along the up and down directions. The pressing rod is used to press the pressing block downward so that the bottom surface of the pressing block presses against the wedge-shaped guide surface.

6. The support plate structure of a pipe gang saw according to claim 1, characterized in that: The lifting assembly also includes a pull rod slidably connected to the buffer base plate in a horizontal direction, the outer periphery of the pull rod is provided with an axially extending installation groove, the installation groove is provided with a guide bar block extending gradually upward from the outer wall of the buffer base plate to the inside of the buffer base plate, and the outer periphery of the jacking rod is provided with a guide lifting groove that slidably cooperates with the guide bar block.

7. A support plate structure for a pipe gang saw as claimed in claim 6, characterized in that: The inner end of the guide bar is connected to the inner groove wall of the installation groove, and a passage for the push rod to pass through from top to bottom is formed between the guide bar and the outer groove wall of the installation groove.

8. The support plate structure of a pipe gang saw according to claim 7, characterized in that: The pull rod is threadedly connected with a positioning column extending in the radial direction of the pull rod, and the positioning column is used to limit the sliding range of the pull rod.

9. The support plate structure of a pipe gang saw according to claim 3, characterized in that: The insertion hole is arranged in the center of the thickness direction of the wear-resistant working plate.

10. A pipe gang saw, characterized in that: A support plate structure comprising a tube gang saw as described in any one of claims 1 to 9.

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