A piston rod maintenance device

Abstract

The present invention discloses a piston rod overhaul device, which relates to the technical field of piston rod overhaul. The piston rod overhaul device is used to carry a piston rod. The piston rod includes a rod body, a piston head, and a stuffing box. The piston head is provided at one end of the rod body, and the stuffing box is sleeved on the rod body. The piston rod overhaul device includes a bracket and two fasteners. The bracket is provided with a through hole penetrating along the vertical direction, and a relief opening is provided on the side wall of the bracket. The rod body can be inserted into the through hole, and the rod body and the stuffing box can enter the through hole through the relief opening. The top wall of the bracket can support the piston head. The two fasteners are movably inserted into the bracket, and the two fasteners can support the stuffing box and clamp the rod body. This piston rod overhaul device can reduce the installation height requirement of the piston rod, improve the applicable range of the overhaul device, and improve the overhaul reliability of the piston rod.

Description

Technical Field

[0001] The present invention relates to the technical field of piston rod maintenance, and particularly to a piston rod maintenance device. Background Art

[0002] Existing piston rod maintenance tools are usually formed by welding sections of steel to form a bracket. They are not only relatively heavy, but also usually require lifting the piston rod above the maintenance tool in order to smoothly place the piston rod into the maintenance tool. Thus, when maintaining the piston rod of an engine in the cabin of a ship, since it is not convenient to move the piston rod to an open area such as the deck, it is difficult to smoothly complete the maintenance of the piston rod when the cabin is relatively short. Therefore, there are height requirements for the cabin, which is not conducive to the maintenance efficiency of the piston rod.

[0003] Therefore, there is an urgent need for a piston rod maintenance device to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston rod maintenance device that can reduce the height requirement for installing the piston rod, improve the applicable range of the maintenance device, and improve the reliability of piston rod maintenance.

[0005] To achieve the above technical effects, the technical solution of the present invention is as follows:

[0006] A piston rod maintenance device for carrying a piston rod. The piston rod includes a rod body, a piston head, and a stuffing box. The piston head is provided at one end of the rod body, and the stuffing box is sleeved on the rod body. The piston rod maintenance device includes: a bracket having a through hole penetrating in the vertical direction, and a through opening provided on the side wall of the bracket. The rod body can pass through the through hole, and the rod body and the stuffing box can enter the through hole through the through opening. The top wall of the bracket can support the piston head; two fasteners movably passing through the bracket, and the two fasteners can support the stuffing box and clamp the rod body.

[0007] Further, the fastener includes a fastening plate slidably provided on the bracket in the horizontal direction. Each end of the fastening plate facing the other fastening plate is provided with a mating opening. When the two fastening plates abut against each other, the two mating openings respectively abut against the rod body.

[0008] Further, when the two fastening plates abut against each other, the two mating openings cooperate with each other to wrap the outer peripheral wall of the rod body.

[0009] Further, the fastener further includes an elastic part provided on the mating opening. When the two fasteners clamp the rod body, the two elastic parts wrap the rod body.

[0010] Furthermore, one of the fastener and the bracket is provided with a slide groove, and the other is provided with a sliding protrusion inserted into the slide groove.

[0011] Furthermore, a sliding plate is provided in the bracket, the sliding protrusion is provided on the sliding plate, the sliding protrusion includes a first matching block and a second matching block, the first matching block is matched in the sliding groove, and the second matching block is connected to the first matching block and is provided above the fastener.

[0012] Furthermore, the top wall of the bracket is provided with a plurality of support parts, and the plurality of support parts are arranged around the clearance hole. A bearing step is provided on one side of the support part close to the clearance hole, and the gap between the bearing step and the side wall of the piston head can be adjusted.

[0013] Furthermore, reinforcing ribs are provided in the bracket, and at least one reinforcing rib is provided corresponding to each supporting portion.

[0014] Furthermore, the support portion comprises a support plate, one end of the support plate is provided with the bearing step, and the other end of the support plate is provided with a connecting hole.

[0015] Furthermore, the bracket includes: a plurality of bases, a support plate and a top plate. The support plate is disposed around the plurality of bases, and a first opening is provided on a side wall of the support plate. The top plate is disposed on the top of the support plate, and a through hole is provided on the top plate, and the clearance hole is formed between the through hole and the plurality of bases, and a second opening is provided on one side of the top plate, and the first opening and the second opening form the clearance opening.

[0016] The beneficial effects of the present invention are as follows: Since the rod body and the stuffing box can enter the relief hole through the relief port, when installing the piston rod on the bracket, it is only necessary to hoist the piston rod to the position corresponding to the bottom of the relief port at the bottom of the rod body, rather than having to hoist the piston rod to a position above the top of the bracket as in the prior art. This can effectively reduce the overall height requirement when hoisting the piston rod into the piston rod maintenance device, thereby effectively reducing the requirement for the height of the ship's cabin, significantly increasing the applicable range of the maintenance device, and facilitating the maintenance of the piston rod for ships with low cabins. After the piston rod is hoisted to the position corresponding to the bottom of the relief port at the bottom of the rod body, the piston rod can be translated into the relief hole, and then the piston rod is lowered so that the piston head abuts against the top wall of the bracket, thereby enabling the bracket to provide a stable supporting effect on the piston head. During the lowering process of the rod body, the stuffing box remains on the fastener under the limitation of the fastener. After the bracket supports the piston head, the fastener can also provide a stable supporting effect on the stuffing box. The rod body is connected to the piston head, so that the bracket and the fastener can provide a reliable supporting effect on the entire piston rod. Thereafter, by adjusting the two fasteners, the rod body can be clamped, thereby fixing the rod body on the bracket, and further realizing the fixed installation of the entire piston rod on the piston rod maintenance device, thus avoiding the piston rod from shaking during the maintenance process and ensuring the reliable maintenance of the piston rod.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the piston rod maintenance device provided by the specific embodiment of the present invention;

[0019] Figure 2 is an exploded schematic diagram of the piston rod maintenance device provided by the specific embodiment of the present invention;

[0020] Figure 3 is Figure 2 a partial enlarged structural diagram at A in

[0021] Figure 4 is one of the matching schematic diagrams of the piston rod and the piston rod maintenance device provided by the specific embodiment of the present invention;

[0022] Figure 5 is another matching schematic diagram of the piston rod and the piston rod maintenance device provided by the specific embodiment of the present invention;

[0023] Figure 6 is the third matching schematic diagram of the piston rod and the piston rod maintenance device provided by the specific embodiment of the present invention.

[0024] Reference Signs

[0025] 1. Bracket; 11. Relief hole; 12. Relief opening; 13. Slide plate; 131. Slide protrusion; 1311. First fitting block; 1312. Second fitting block; 1313. Fixing structure; 14. Base; 15. Support plate; 151. First opening; 16. Top plate; 161. Through hole;

[0026] 2. Fastener; 21. Fastening plate; 211. Fitting opening; 212. Chute; 22. Elastic part;

[0027] 3. Support part; 31. Bearing step; 32. Connecting hole;

[0028] 4. Reinforcing rib;

[0029] 100. Rod body; 110. Piston head; 120. Stuffing box. Detailed implementation mode

[0030] To make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific implementation modes.

[0031] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected" and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is at a lower horizontal height than the second feature.

[0033] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, the terms "first" and "second" are only used for descriptive distinction and have no special meaning.

[0034] The following refers to Figures 1-6 Describe the specific structure of the piston rod maintenance device according to the embodiments of the present invention.

[0035] As Figures 1-6 shown, Figure 1 Disclosed is a piston rod maintenance device, which is used to carry a piston rod. The piston rod includes a rod body 100, a piston head 110, and a stuffing box 120. The piston head 110 is arranged at one end of the rod body 100, and the stuffing box 120 is sleeved on the rod body 100. The piston rod maintenance device includes a bracket 1 and two fasteners 2. The bracket 1 is provided with a through hole 11 penetrating in the vertical direction, and a notch 12 is provided on the side wall of the bracket 1. The rod body 100 can pass through the through hole 11, and the rod body 100 and the stuffing box 120 can enter the through hole 11 from the notch 12. The top wall of the bracket 1 can support the piston head 110. The two fasteners 2 are movably passed through the bracket 1, and the two fasteners 2 can support the stuffing box 120 and clamp the rod body 100.

[0036] It can be understood that since the rod body 100 and the stuffing box 120 can enter the relief hole 11 through the relief port 12, when the piston rod is installed on the bracket 1, it is only necessary to hoist the piston rod to the position corresponding to the bottom of the relief port 12 at the bottom of the rod body 100, rather than having to hoist the piston rod to a position above the top of the bracket 1 as in the prior art. Thus, the overall height requirement for hoisting the piston rod into the piston rod maintenance device can be effectively reduced, thereby effectively reducing the requirement for the height of the ship's cabin, significantly improving the applicable range of the maintenance device, and facilitating the piston rod maintenance work for ships with low cabins. After the piston rod is hoisted to the position corresponding to the bottom of the relief port 12 at the bottom of the rod body 100, the piston rod can be translated into the relief hole 11, and then the piston rod is lowered so that the piston head 110 abuts against the top wall of the bracket 1, thereby enabling the bracket 1 to provide a stable supporting effect on the piston head 110. During the lowering process of the rod body 100, the stuffing box 120 remains on the fastener 2 under the limitation of the fastener 2. After the bracket 1 supports the piston head 110, the fastener 2 can also provide a stable supporting effect on the stuffing box 120. The rod body 100 is connected to the piston head 110, so that the bracket 1 and the fastener 2 can provide a reliable supporting effect on the entire piston rod. Thereafter, by adjusting the two fasteners 2, the rod body 100 can be clamped, thereby fixing the rod body 100 on the bracket 1, and further realizing the fixed installation of the entire piston rod on the piston rod maintenance device, thus avoiding the piston rod from shaking during the maintenance process and ensuring the reliable maintenance of the piston rod.

[0037] In some embodiments, as Figures 1-3 shown, the fastener 2 includes a fastening plate 21, and the fastening plate 21 is slidably arranged on the bracket 1 in the horizontal direction. A mating port 211 is formed at one end of each fastening plate 21 facing the other fastening plate 21. When the two fastening plates 21 abut against each other, the two mating ports 211 respectively abut against the rod body 100.

[0038] It can be understood that by forming the mating port 211 at the end of the fastening plate 21, a good clamping effect on the rod body 100 can be achieved. Moreover, the processing cost of the fastening plate 21 is low, which can reduce the processing cost of the maintenance device. When the two mating ports 211 abut against the rod body 100, they can also provide a good clamping effect on the rod body 100, effectively reducing the possibility of the rod body 100 shaking. Of course, in other embodiments of the present invention, the fastener 2 can also be set as a fastening jaw or a fastening pliers and other fastening structures, without specific limitation.

[0039] In some embodiments, as Figure 4 and Figure 5 shown, when the two fastening plates 21 abut against each other, the two mating ports 211 cooperate with each other to wrap the outer peripheral wall of the rod body 100.

[0040] It can be understood that since the cooperation of the two semi-circular notches can completely wrap the outer peripheral surface of the rod body 100, the cylindrical rod body 100 can be clamped more reliably, thereby further improving the clamping effect of the fastener 2 on the rod body 100, better avoiding the shaking of the piston rod, and improving its maintenance quality. In this embodiment, the mating port 211 can be formed as a semi-circular notch. Of course, in other embodiments of the present invention, the mating port 211 can also be processed and designed according to the specific shape of the rod body 100, such as a rectangular groove notch, a semi-waist-shaped notch, etc.

[0041] In some embodiments, such as Figures 1-5 As shown, the fastener 2 further includes an elastic part 22, and the elastic part 22 is arranged on the mating port 211. When the two fasteners 2 clamp the rod body 100, the two elastic parts 22 wrap the rod body 100.

[0042] It can be understood that the elastic part 22 can not only play a buffering effect, so that the fastening plate 21 will not damage the rod body 100 or the fastening plate 21 when clamping the rod body 100, but also ensure that a clamping force is applied to the part on the outer peripheral wall of the rod body 100 under the contraction action of the elastic part 22 itself, thereby further improving the clamping effect of the fastener 2 on the piston rod, further reducing the shaking problem of the piston rod, and thus facilitating the improvement of the maintenance quality of the piston rod.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, a sliding groove 212 is provided on one of the fastener 2 and the bracket 1, and a sliding protrusion 131 penetrating through the sliding groove 212 is provided on the other.

[0044] It can be understood that the cooperation of the sliding groove 212 and the sliding protrusion 131 can guide the movement of the fastener 2 on the bracket 1, so that the fastener 2 can only reciprocate in the plane where the length direction of the sliding groove 212 is located, avoiding the problem that the fastener 2 deviates and cannot clamp the rod body 100 during movement, thereby ensuring that the two fasteners 2 can abut and cooperate with each other to clamp the rod body 100, effectively ensuring that the rod body 100 will not shake, and improving the maintenance quality of the piston rod.

[0045] In some embodiments, such as Figure 3 As shown, a sliding plate 13 is provided in the bracket 1, the sliding protrusion 131 is arranged on the sliding plate 13, the sliding protrusion 131 includes a first mating block 1311 and a second mating block 1312, the first mating block 1311 is fitted in the sliding groove 212, and the second mating block 1312 is connected to the first mating block 1311 and arranged above the fastener 2.

[0046] It is understandable that the sliding plate 13 can stably support the fastener 2 to prevent the fastener 2 from deflecting downward during movement, while the second matching block 1312 can prevent the fastener 2 from deflecting upward during movement, thereby further limiting the movement of the fastener 2. At the same time, the matching of the first matching block 1311 and the slide groove 212 can also enable the fastener 2 to reciprocate only along the plane where the length direction of the slide groove 212 is located. Therefore, through the above-mentioned structural setting, it can be better ensured that the fastener 2 can only reciprocate along the length direction of the slide groove 212, which is convenient for maintenance personnel to move the fastener 2 on the sliding plate 13, and can further ensure the clamping effect of the fastener 2 on the rod body 100, and improve the maintenance quality of the piston rod.

[0047] In addition, the second matching block 1312 can also be pressed on the fastener 2 to lock the fastener 2 on the sliding plate 13, thereby ensuring that the fastener 2 will not loosen during the process of clamping the rod body 100, ensuring the clamping effect of the fastener 2 on the rod body 100.

[0048] In some embodiments, Figure 6 As shown, the top wall of the bracket 1 is provided with a plurality of support parts 3, and the plurality of support parts 3 are arranged around the clearance hole 11. A bearing step 31 is provided on one side of the support part 3 close to the clearance hole 11, and the gap between the bearing step 31 and the side wall of the piston head 110 can be adjusted.

[0049] It is understandable that the multiple support parts 3 can further improve the stability of the support 1 supporting the piston head 110, thereby better ensuring the stable installation of the piston rod on the piston rod maintenance device, so as to improve the maintenance reliability of the piston rod. In addition, since the support part 3 is provided with a bearing step 31, and the gap between the bearing step 31 and the side wall of the piston head 110 can be adjusted, the piston head 110 is supported on the horizontal surface of the bearing step 31 and still has a gap with the vertical surface of the bearing step 31, so that the piston head 110 is conveniently adjusted to its position on the support part 3 in the horizontal direction, so that the bearing step 31 can not only limit the piston head 110, but also facilitate the overall fine adjustment of the piston rod, thereby improving the installation convenience of the piston rod on the piston rod maintenance device.

[0050] In some embodiments, Figure 2 and Figure 4 As shown, a reinforcing rib 4 is further provided in the bracket 1 , and at least one reinforcing rib 4 is provided corresponding to each supporting portion 3 .

[0051] It can be understood that since a reinforcing rib 4 is correspondingly provided on the supporting part 3, the reinforcing rib 4 can strengthen the strength of the supporting part 3, so as to effectively improve the supporting effect of the supporting part 3 on the piston head 110 and the whole piston rod, thereby improving the installation safety of the piston rod on the piston rod overhaul device. Of course, in other embodiments of the present invention, reinforcing ribs 4 can also be provided at other supporting parts 3 of the bracket 1, and the specific setting positions and quantities of the reinforcing ribs 4 can be determined according to actual needs, which will not be elaborated here.

[0052] In some embodiments, such as Figure 2 and Figure 4 shown, the supporting part 3 includes a support plate 15, one end of the support plate 15 is provided with a bearing step 31, and the other end is provided with a connection hole 32.

[0053] It can be understood that the connection hole 32 can facilitate the connection with the hoisting device, which is beneficial to the movement and installation of the piston rod overhaul device. By hooking the sling of the hoisting device onto the connection hole 32 on the support plate 15, the whole overhaul device can be moved to other positions more conveniently, thereby improving the applicable range of the piston rod overhaul device.

[0054] In some embodiments, such as Figure 2 shown, the bracket 1 includes a plurality of bases 14, a support plate 15 and a top plate 16. The support plate 15 is disposed around the plurality of bases 14, and a first opening 151 is provided on the side wall of the support plate 15. The top plate 16 is disposed on the top of the support plate 15, a through hole 161 is provided on the top plate 16, a clearance hole 11 is formed between the through hole 161 and the plurality of bases 14, and a second opening is provided on one side of the top plate 16, and the first opening 151 and the second opening form a clearance opening 12.

[0055] It can be understood that through the above structural settings, the clearance hole 11 and the clearance opening 12 can be formed, which is convenient for the convenient installation of the piston rod and the stuffing box 120. In addition, since the bracket 1 in this embodiment is mainly prepared from sheet materials, and holes are provided in the sheet materials, a support structure with reliable strength can be formed by welding connection. Compared with the support structure welded by sections in the prior art, the quality of the support structure can be effectively reduced on the premise of ensuring reliable strength, and at the same time, it also has the advantages of saving materials and reducing processing costs. Specifically, the sheet materials in this embodiment can all be formed by processing sheet metal parts.

[0056] In some specific embodiments, such as Figure 1 and Figure 2As shown, the first opening 151 is a U-shaped opening, that is, the first opening 151 does not penetrate through the side wall of the entire support plate 15, so as to better ensure the overall strength of the support plate 15 and further improve the safety of the maintenance device when installing the piston rod. In addition, it should be noted that since the maintenance platform of the maintenance device usually has blind holes to accommodate the rod body 100 of the piston rod, and there is usually no lateral channel on the maintenance platform, that is, the piston rod cannot directly enter the blind hole and the maintenance device along the radial direction of the rod body 100, so it is also meaningless to penetrate the first opening 151 through the side wall of the support plate 15. Of course, in other embodiments of the present invention, according to the actual use occasions of the maintenance device, it does not exclude the existence of a maintenance platform with a lateral channel, nor does it exclude the bracket 1 that still has reliable strength after the first opening 151 penetrating the support plate 15 is provided. Therefore, the specific shape of the first opening 151 can be determined according to actual needs and does not need to be specifically limited.

[0057] Embodiment:

[0058] The following refers to Figures 1-6 Describe the piston rod maintenance device of a specific embodiment of the present invention.

[0059] The piston rod maintenance device of this embodiment is used to carry the piston rod. The piston rod includes a rod body 100, a piston head 110, and a stuffing box 120. The piston head 110 is provided at one end of the rod body 100, and the stuffing box 120 is sleeved on the rod body 100. The piston rod maintenance device includes a bracket 1 and two fasteners 2.

[0060] The bracket 1 is provided with a through hole 11 penetrating in the vertical direction, and a relief opening 12 is provided on the side wall of the bracket 1. The rod body 100 can pass through the through hole 11, and the rod body 100 and the stuffing box 120 can enter the through hole 11 from the relief opening 12, and the top wall of the bracket 1 can support the piston head 110. The bracket 1 includes a plurality of bases 14, a support plate 15, and a top plate 16. The support plate 15 is disposed around the plurality of bases 14, and a first opening 151 is provided on the side wall of the support plate 15. The top plate 16 is provided on the top of the support plate 15, and a through hole 161 is provided on the top plate 16. A through hole 11 is formed between the through hole 161 and the plurality of bases 14. A second opening is provided on one side of the top plate 16, and the first opening 151 and the second opening form a relief opening 12.

[0061] The top wall of the bracket 1 is provided with a plurality of support portions 3. The plurality of support portions 3 are disposed around the through hole 11. A bearing step 31 is provided on the side of the support portion 3 close to the through hole 11, and the gap between the bearing step 31 and the side wall of the piston head 110 is adjustable. The support portion 3 includes a support plate 15. A bearing step 31 is provided at one end of the support plate 15, and a connection hole 32 is provided at the other end. A reinforcing rib 4 is further provided in the bracket 1, and at least one reinforcing rib 4 is provided corresponding to each support portion 3.

[0062] Two fasteners 2 are movably inserted into the bracket 1, and the two fasteners 2 can support the stuffing box 120 and clamp the rod body 100. The fastener 2 includes a fastening plate 21, and the fastening plate 21 is slidably arranged on the bracket 1 in the horizontal direction. A mating port 211 is formed at one end of each fastening plate 21 facing the other fastening plate 21. When the two fastening plates 21 are in contact with each other, the two mating ports 211 are respectively in contact with the rod body 100. The fastener 2 further includes an elastic part 22, and the elastic part 22 is arranged on the mating port 211. When the two fasteners 2 clamp the rod body 100, the two elastic parts 22 wrap the rod body 100. The mating port 211 is a semi-circular notch. A sliding plate 13 is arranged in the bracket 1, and a sliding protrusion 131 is arranged on the sliding plate 13. The sliding protrusion 131 includes a first mating block 1311 and a second mating block 1312. The first mating block 1311 is fitted in the sliding groove 212, and the second mating block 1312 is connected to the first mating block 1311 and arranged above the fastener 2.

[0063] In the description of this specification, the description referring to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0064] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A piston rod maintenance device for carrying a piston rod, the piston rod comprising a rod body (100), a piston head (110) and a stuffing box (120), the piston head (110) being provided at one end of the rod body (100), and the stuffing box (120) being sleeved on the rod body (100), characterized in that, The piston rod repair device comprises: A bracket (1), wherein the bracket (1) is provided with a clearance hole (11) penetrating in a vertical direction, a side wall of the bracket (1) is provided with a clearance opening (12), the rod body (100) can be inserted into the clearance hole (11), the rod body (100) and the stuffing box (120) can enter the clearance hole (11) through the clearance opening (12), and the top wall of the bracket (1) can support the piston head (110); Two fasteners (2), the two fasteners (2) being movably inserted into the bracket (1), and the two fasteners (2) being capable of supporting the stuffing box (120) and clamping the rod body (100); The support (1) comprises: A plurality of bases (14); a support plate (15), the support plate (15) being disposed around the plurality of bases (14), and a first opening (151) being formed on a side wall of the support plate (15); A top plate (16), the top plate (16) being arranged on the top of the support plate (15), the top plate (16) being provided with a through hole (161), the through hole (161) and the plurality of bases (14) forming the clearance hole (11), a second opening being provided on one side of the top plate (16), the first opening (151) and the second opening forming the clearance opening (12).

2. The piston rod overhaul device according to claim 1, characterized in that, The fastener (2) comprises a fastening plate (21), the fastening plate (21) being slidably arranged on the bracket (1) in a horizontal direction, and each of the fastening plates (21) is provided with a matching opening (211) at one end facing the other fastening plate (21), and when the two fastening plates (21) are in contact with each other, the two matching openings (211) are respectively in contact with the rod body (100).

3. The piston rod overhaul device according to claim 2, characterized in that, When the two fastening plates (21) abut against each other, the two matching openings (211) match each other to wrap around the outer peripheral wall of the rod body (100).

4. The piston rod maintenance device according to claim 2, characterized in that, The fastener (2) further comprises an elastic portion (22), wherein the elastic portion (22) is arranged on the matching opening (211), and when the two fasteners (2) clamp the rod body (100), the two elastic portions (22) wrap the rod body (100).

5. The piston rod overhaul device according to claim 1, characterized in that One of the fastener (2) and the bracket (1) is provided with a sliding groove (212), and the other is provided with a sliding protrusion (131) that penetrates the sliding groove (212).

6. The piston rod overhaul device according to claim 5, characterized in that, The bracket (1) is provided with a sliding plate (13), the sliding protrusion (131) is provided on the sliding plate (13), the sliding protrusion (131) comprises a first matching block (1311) and a second matching block (1312), the first matching block (1311) is matched in the sliding groove (212), and the second matching block (1312) is connected to the first matching block (1311) and is provided above the fastener (2).

7. The piston rod overhaul device according to claim 1, characterized in that, The top wall of the bracket (1) is provided with a plurality of support portions (3), the plurality of support portions (3) are arranged around the relief hole (11), a bearing step (31) is provided on one side of the support portion (3) close to the relief hole (11), and the gap between the bearing step (31) and the side wall of the piston head (110) is adjustable.

8. The piston rod maintenance device according to claim 7, wherein, Reinforcing ribs (4) are further arranged in the bracket (1), and at least one reinforcing rib (4) corresponds to each support portion (3).

9. The piston rod overhaul device according to claim 7, characterized in that, The support portion (3) includes a support plate (15), a bearing step (31) is provided at one end of the support plate (15), and a connection hole (32) is formed at the other end.

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