Split type double-acting intelligent bolt tensioner pump

Abstract

The invention relates to the technical field of bolt tensioner pumps, in particular to a split type double-acting intelligent bolt tensioner pump. In the oil supply work, for connection of an oil conveying port and an oil conveying hose, through matched use of a connecting sleeve head, a butt joint pipe head and a connecting assembly, the oil conveying port is connected with the oil conveying hose; a limiting clamping groove formed in the connecting casing head is matched with a limiting clamping strip on the outer side of the connecting lining head for use, so that rapid pre-positioning is provided for connection of the connecting casing head and the butt-joint pipe head, and rapidness and convenience of connection of the connecting casing head and the butt-joint pipe head are guaranteed; on this basis; and the end part of the connecting lining head is also provided with a connecting sleeve head which is used for improving the sealing performance of the connection between the connecting sleeve head and the butt joint pipe head, ensuring the stable circulating conveying of the oil in the oil tank, assisting the detection work of the pressure of the inner cavity in the oil tank, and avoiding the deviation of the pressure detection work caused by the overflow of the oil.

Description

Technical Field

[0001] This invention relates to the field of bolt tensioner pump technology, and in particular to a split-type double-acting intelligent bolt tensioner pump. Background Technology

[0002] Hydraulic bolt tensioners typically consist of a hydraulic tensioning body, a manual or electric pump, and an ultra-high pressure hose. Their principle is to stretch and deform the bolt. During operation, the high-pressure oil output from the power source is delivered to the piston cylinder through the high-pressure hose, causing the piston to move upward, thereby lengthening the bolt to achieve the purpose of pre-tightening or disassembly. A complete device usually includes four parts: a pressure gauge, a hydraulic pump, a tensioning body, and a high-pressure hose.

[0003] The pump used in the hydraulic bolt tensioner provides hydraulic pressure to the hydraulic bolt tensioner. The oil tank in the pump station is connected to the oil circuit connection pipe of the hydraulic bolt tensioner. The high-pressure oil port on the oil tank is connected to the oil inlet of the hydraulic bolt tensioner with a 200MPa high-pressure hose. The low-pressure oil port on the oil tank is connected to the return oil port of the hydraulic bolt tensioner with a 70MPa low-pressure hose.

[0004] The connection between the high-pressure oil port and the inlet pipe, as well as the low-pressure oil port and the return oil port, is generally achieved using quick-connect couplings. These couplings are used to connect the inlet and outlet ports of the hydraulic bolt tensioner via threaded or plug-in connections. While this allows for quick assembly and disassembly, it results in insufficient connection stability. During oil transportation and when the internal pressure of the oil tank is too high, oil is prone to overflow, causing contamination. Furthermore, the overflowing oil also affects the internal pressure of the oil tank, which in turn affects the operation of the pressure relief mechanism.

[0005] To address these issues, this invention proposes a split-type double-acting intelligent bolt tensioner pump. Summary of the Invention

[0006] The purpose of this invention is to provide a split-type double-acting intelligent bolt tensioner pump to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a split-type double-acting intelligent bolt tensioner pump, comprising a pump body frame and an oil tank disposed on the pump body frame, and an oil inlet is also provided on one side of the oil tank; A connecting sleeve head is installed at the pipe opening of the oil inlet; The oil inlet is connected to the oil delivery hose, and a connecting pipe is also provided at the end of the oil delivery hose. The connector is connected to the connecting sleeve head and sealed and fixed by the set connecting components.

[0008] Preferably, the connecting assembly includes a limiting groove disposed on the inner sidewall of the connecting sleeve head and a connecting inner liner head disposed at the end of the connecting pipe head; The limiting slots are set at equal intervals, and a through hole is provided in the limiting slot, which extends to the outer wall of the connecting sleeve head; A limiting strip that is adapted to and engages with the limiting slot is also provided on the outer wall of the connecting inner liner head.

[0009] Preferably, a fastening screw groove is provided on the limiting strip; The limit strip and the limit slot are secured by fastening screws.

[0010] Preferably, the connection component further includes auxiliary components; The auxiliary component includes positioning grooves equidistantly arranged at the ends of the connecting inner liner head, and mounting screw grooves provided in the positioning grooves.

[0011] Preferably, the auxiliary component further includes a sealing head, with a positioning protrusion symmetrically arranged at one end of the sealing head, and a cylindrical through groove symmetrically arranged through the sealing head, the cylindrical through groove extending into the positioning protrusion; The positioning protrusion and the positioning groove are inserted together to provide positioning for the sealing head, and the sealing head is fixed by the cooperation of the mounting pin and the mounting screw groove.

[0012] Preferably, an auxiliary groove is provided on the end face of one end of the sealing head; The auxiliary groove is designed to be annular; it serves two purposes: firstly, to accommodate the pin head for mounting the pin; and secondly, to provide a sealing aid for the connection between the plug head and the connecting sleeve head.

[0013] Preferably, a first annular drainage groove is also provided on the outer wall of the plugging head.

[0014] Preferably, a second annular drainage groove is provided on the inner side wall of the connecting sleeve head. The second annular drainage groove and the first annular drainage groove cooperate to form an annular drainage cavity, which provides a drainage effect for overflowing oil.

[0015] Preferably, a drainage tube is also provided at the bottom of the outer side wall of the connecting sleeve head; The drainage tube is connected to the second annular drainage groove, and the bottom end of the drainage tube is threaded and threaded to the connecting bottle opening at the top of the transparent collection bottle.

[0016] Preferably, a set of sealing heads is provided at the end of the connecting inner liner head, and the sealing heads are adapted to be inserted into the inner cavity of the connecting sleeve head. The sealing heads are configured as annular, and their outer side wall is adapted to fit and adhere to the inner side wall of the connecting sleeve head.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The present invention relates to a split-type double-acting intelligent bolt tensioner pump, which includes a pump body frame and an oil tank mounted on the pump body frame. An oil inlet is also provided on one side of the oil tank. A connecting sleeve head is provided at the opening of the oil inlet. The oil inlet is connected to an oil delivery hose. A connecting pipe head is also provided at the opening end of the oil delivery hose. The connecting pipe head is connected to the connecting sleeve head and sealed and fixed by a connecting component.

[0018] In this solution, the split-type double-acting intelligent bolt tensioner pump improves the tightness of the connection between the oil inlet and the oil hose by using a combination of a connecting sleeve head, a connecting pipe head, and connecting components. Specifically, the limiting groove on the connecting sleeve head and the limiting strip on the outside of the connecting inner liner head work together to provide a quick pre-positioning for the connection between the connecting sleeve head and the connecting pipe head, ensuring the speed and convenience of the connection. Based on this, an additional feature is provided at the end of the connecting inner liner head to improve the sealing of the connection between the connecting sleeve head and the connecting pipe head, ensuring stable circulation and delivery of oil in the oil tank. This also assists in the detection of pressure within the oil tank, preventing deviations in pressure detection due to oil spillage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the right side of the structure connection of the split-type double-acting intelligent bolt tensioner pump of the present invention; Figure 2 This is a schematic diagram of the left side of the structure connection of the split-type double-acting intelligent bolt tensioner pump of the present invention; Figure 3 This is a right-side schematic diagram showing the connection between the oil inlet and the oil hose structure of the present invention after an explosion. Figure 4 This is a schematic diagram of the left side of the exploded connection between the oil inlet and the oil hose structure of the present invention; Figure 5 This is a schematic diagram of the front side of the connecting sleeve head structure of the present invention; Figure 6 This is a schematic diagram of the bottom connection of the connecting sleeve head structure of the present invention; Figure 7 This is a schematic diagram of the pipe head structure connection of the present invention; Figure 8 This is a schematic diagram of the connection of the sealing head structure of the present invention.

[0020] In the diagram: Pump frame 1, oil tank 2, oil inlet 3, connecting sleeve head 31, oil hose 4, connecting pipe head 41, limit slot 501, through hole 502, fastening screw 503, connecting liner head 504, limit strip 505, fastening screw groove 506, positioning groove 601, mounting screw groove 602, sealing head 603, positioning protrusion 604, cylindrical through groove 605, mounting pin 606, auxiliary groove 701, first annular drainage groove 801, second annular drainage groove 802, drainage pipe 803, connecting bottle mouth 804, transparent collection bottle 805. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-8 A split-type double-acting intelligent bolt tensioner pump includes a pump body frame 1 and an oil tank 2 installed on the pump body frame 1. An oil inlet 3 is also provided on one side of the oil tank 2. A connecting sleeve head 31 is provided at the pipe opening of the oil inlet 3. The oil inlet 3 is connected to the oil hose 4, and a connecting pipe 41 is also provided at the end of the oil hose 4; the connecting pipe 41 is connected to the connecting sleeve head 31 and is sealed and fixed by the provided connecting components.

[0023] The split-type double-acting intelligent bolt tensioner pump designed in this invention adopts a "high-pressure tensioning + low-pressure return" double-acting cycle design, abandoning the traditional unidirectional operation of tensioners that rely on gravity or spring force for reset; it is especially suitable for scenarios where the reset of multiple tensioners is slow after being connected in series, such as: wind turbine gearbox expansion sleeve construction, petrochemical flange installation and maintenance, mining machinery slewing support installation and maintenance, etc.; compared with single-acting pumps, the working efficiency is increased by up to 100%, and the operation time is significantly shortened.

[0024] Furthermore, its built-in high-precision pressure sensor and PLC intelligent control can monitor and dynamically adjust the output force and speed in real time; it supports preset pressure or tensile force, and automatically stops when the set value is reached, preventing overload and achieving precise and safe "set and forget" operation.

[0025] The core power unit has been optimized to deliver powerful performance within a compact chassis. The high-pressure pump utilizes a 3kW servo motor, handling the task with ease.

[0026] Equipped with a high-definition digital display screen and remote control, parameters are clearly displayed, and settings are simple and quick. The ergonomic grip design and lightweight digital remote control greatly reduce the intensity of manual operation.

[0027] The pump frame 1 in this solution is made of high-strength alloy material and precision manufacturing process. Key components undergo special heat treatment, making them wear-resistant and corrosion-resistant.

[0028] The pump body integrates multiple safety protection mechanisms (such as overpressure protection and temperature protection) to ensure stable operation of the equipment under harsh working conditions and a longer service life.

[0029] According to the appendix Figure 1-4 As shown, in the oil supply operation of the split-type double-acting intelligent bolt tensioner pump in this solution, the connection between the oil inlet 3 and the oil hose 4 is improved through the cooperation of the connecting sleeve head 31, the connecting pipe head 41, and the connecting components. Specifically, the limiting groove 501 on the connecting sleeve head 31 and the limiting strip 505 on the outside of the connecting inner liner head 504 work together to provide a quick pre-positioning for the connection between the connecting sleeve head 31 and the connecting pipe head 41, ensuring the speed and convenience of the connection. On the other hand, the end of the connecting inner liner head 504 is also provided to improve the sealing of the connection between the connecting sleeve head 31 and the connecting pipe head 41, ensuring stable circulation of oil in the oil tank 2. This also assists in the detection of the internal pressure in the oil tank 2, preventing deviations in pressure detection due to oil overflow. Furthermore, it facilitates the pressure relief and control of the pump body's hydraulic pressure.

[0030] Furthermore, this solution also includes a transparent collection bottle 805 located at the bottom outer side of the connecting sleeve head 31. This provides a temporary collection method for any oil spills during subsequent work, preventing contamination from the spilled oil. Additionally, staff can determine whether oil has spilled by checking the presence of oil in the transparent collection bottle 805, allowing for timely handling.

[0031] Among them, from the appendix Figure 7-8 As shown, this solution makes the sealing head 603 detachable, which facilitates later replacement and maintenance.

[0032] The sealing head 603 is a component of the auxiliary assembly. A positioning protrusion 604 is symmetrically arranged at one end of the sealing head 603, and a cylindrical through groove 605 is symmetrically arranged through the sealing head 603, extending into the positioning protrusion 604. The positioning protrusion 604 and the positioning groove 601 are inserted to provide positioning for the sealing head 603, and the sealing head 603 is fixed by the cooperation of the mounting pin 606 and the mounting screw groove 602. The positioning protrusion 604 at one end of the sealing head 603 cooperates with the positioning groove 601 at the end of the connecting inner liner head 504, and the positioning groove 601 is provided with the mounting screw groove 602.

[0033] For the installation of the sealing head 603, the positioning protrusion 604 at one end of the sealing head 603 is inserted into the positioning groove 601 at the end of the connecting inner liner head 504. At the same time, the cylindrical through groove 605 in the sealing head 603 is aligned with the mounting screw groove 602 in the positioning groove 601. Then, the sealing head 603 is fixed with the mounting pin 606, that is, the mounting pin 606 is inserted into the cylindrical through groove 605, and then threaded into the mounting screw groove 602. The mounting pin 606 is then tightened, and the installation and fixing of the sealing head 603 is completed. Similarly, for the disassembly of the sealing head 603, the mounting pin 606 is removed, and the positioning protrusion 604 is separated from the positioning groove 601.

[0034] Combined with the appendix Figure 4 and appendix Figure 7 As shown, this solution has an auxiliary groove 701 on the end face of one end of the sealing head 603; the auxiliary groove 701 is annular; the auxiliary groove 701 provides a receiving function for the pin head of the mounting pin 606 on the one hand; on the other hand, it provides a sealing auxiliary function for the connection between the sealing head 603 and the connecting sleeve head 31.

[0035] In other words, during the installation and fixing of the plug head 603, after tightening the mounting pin 606, the pin head of the mounting pin 606 will be in the auxiliary groove 701 to prevent the pin head of the mounting pin 606 from protruding and affecting the tightness of the contact between the plug head 603 and the inner cavity of the connecting sleeve head 31. Furthermore, when the plug head 603 makes tight contact with the inner cavity of the connecting sleeve head 31 to provide a seal, if the flowing oil overflows, the auxiliary groove 701 provides a storage effect for the oil, which is equivalent to a buffer and helps to prevent the oil from overflowing.

[0036] After installing and fixing the plug head 603, connect the oil hose 4 to the oil inlet 3, that is, insert the connecting inner liner head 504 into the connecting sleeve head 31; according to the appendix Figure 3-5 and appendix Figure 7As shown; the connecting assembly includes a limiting groove 501 disposed on the inner side wall of the connecting sleeve head 31 and a connecting inner liner head 504 disposed at the end of the connecting pipe head 41; the limiting grooves 501 are equidistantly arranged, and a through hole 502 is provided in the limiting grooves 501, the through hole 502 extending to the outer side wall of the connecting sleeve head 31; a limiting strip 505 adapted to and engaged with the limiting grooves 501 is also provided on the outer side wall of the connecting inner liner head 504. A fastening groove 506 is provided on the limiting strip 505; when the connecting inner liner head 504 together with the sealing head 603 is inserted into the connecting sleeve head 31, after the sealing head 603 located at the front end of the connecting inner liner head 504 enters the connecting sleeve head 31, the limiting strip 505 on the outside of the connecting inner liner head 504 needs to engage with the limiting groove 501 on the inner side wall of the connecting sleeve head 31. The engagement of the two provides a pre-position for the connecting pipe head 41.

[0037] After the limiting strip 505 is fully inserted into the limiting groove 501, the connecting pipe head 41 and the connecting sleeve head 31 come into contact. At the same time, the end face of the sealing head 603 at the front end of the connecting inner liner head 504 comes into close contact with the end face of the inner cavity of the connecting sleeve head 31. The sealing head 603 is provided at the end of the connecting inner liner head 504. The sealing head 603 is adapted to be inserted into the inner cavity of the connecting sleeve head 31. The sealing head 603 is set as a ring, and its outer side wall is adapted to fit and fit the inner side wall of the connecting sleeve head 31. Then, the connecting inner liner head 504 is fixed with the fastening screw 503. The fastening screw 503 is inserted into the through hole 502 in the connecting sleeve head 31, and then the fastening screw 503 is threaded to the fastening screw groove 506 on the limiting strip 505. The fixing of the connecting inner liner head 504 is completed, that is, the connection between the oil hose 4 and the oil port 3 is completed.

[0038] If oil overflow occurs during the use of both the oil hose 4 and the oil inlet 3, and if it is not detected and maintained in time, it will not only affect the oil delivery of the intelligent bolt tensioner pump, but the overflowing oil will also cause pollution.

[0039] According to the appendix Figure 5-6 As shown, this solution provides a reminder by placing a transparent collection bottle 805 at the bottom of the outer side of the connecting sleeve head 31.

[0040] The sealing head 603 has a first annular drainage groove 801 on its outer side wall; a second annular drainage groove 802 is provided on the inner side wall of the connecting sleeve head 31. The second annular drainage groove 802 and the first annular drainage groove 801 cooperate to form an annular drainage cavity, which provides a drainage effect for overflowing oil. A drainage pipe 803 is also provided at the bottom of the outer side wall of the connecting sleeve head 31. The drainage pipe 803 is connected to the second annular drainage groove 802, and the bottom end of the drainage pipe 803 is threaded and connected to the transparent... The top of the collection bottle 805 is connected to the connecting bottle opening 804 by a thread; that is, when oil overflow occurs, the oil flows along the outer wall of the sealing head 603 until the oil reaches the annular drainage cavity formed by the second annular drainage groove 802 and the first annular drainage groove 801. The annular drainage cavity formed here serves two purposes: firstly, it acts as a buffer and barrier for the overflowing oil to prevent the oil from overflowing directly from the connection position between the connecting sleeve head 31 and the connecting pipe head 41 and causing contamination; secondly, the annular drainage cavity provides a drainage function for the incoming oil.

[0041] This means that the incoming oil is diverted to the position where the diversion pipe 803 connects to the second annular diversion groove 802. Then, the oil enters the transparent collection bottle 805 from the diversion pipe 803. The oil is temporarily collected in the transparent collection bottle 805. The use of the transparent collection bottle 805 serves two purposes: firstly, it prevents the oil from overflowing directly from the connection between the connecting sleeve head 31 and the connecting pipe head 41, thus avoiding contamination; secondly, the oil in the transparent collection bottle 805 serves as a reminder to the workers that if oil overflows from the connection between the connecting sleeve head 31 and the connecting pipe head 41, or if the connection seal is compromised, timely maintenance can be performed to avoid causing other work problems.

[0042] When oil appears in the transparent collection bottle 805, the sealing head 603 at the front end of the connecting inner liner head 504 needs to be disassembled and replaced. First, loosen the fastening screws 503 from the connecting inner liner head 504, that is, loosen the threaded connection between the fastening screws 503 and the fastening screw groove 506 on the outer wall limiting strip 505 of the connecting inner liner head 504. After loosening all the fastening screws 503, the insertion and fixing of the connecting inner liner head 504 and the connecting sleeve head 31 can be released. Then, pull the connecting inner liner head 504 outwards. Finally, loosen the fixing of the sealing head 603 by unscrewing the mounting pin 606, and then remove the sealing head 603. Afterwards, install the new sealing head 603. The plug 603 is installed at the front end of the connecting liner head 504. After the plug 603 is installed, the transparent collection bottle 805 needs to be disassembled to clean the oil in the transparent collection bottle 805 and to clean the oil adhering to the inner cavity of the connecting sleeve head 31. If it is not cleaned properly, the oil remaining in the inner cavity of the connecting sleeve head 31, especially in the second annular drainage groove 802, may enter the transparent collection bottle 805 during later use. This may cause misjudgment when there is no seal or leakage between the connecting sleeve head 31 and the connecting pipe head 41, resulting in unnecessary maintenance work and affecting the overall work efficiency.

[0043] After replacing and installing the plug head 603 and cleaning the connecting sleeve head 31, insert the connecting inner liner head 504 into the connecting sleeve head 31, and then fix it in place.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type double-acting intelligent bolt tensioner pump, comprising a pump body frame (1) and an oil tank (2) disposed on the pump body frame (1), and an oil inlet (3) is also provided on one side of the oil tank (2). Its features are: A connecting sleeve head (31) is provided at the pipe opening of the oil inlet (3); The oil inlet (3) is connected to the oil hose (4), and a connecting pipe (41) is also provided at the end of the oil hose (4). The connector (41) is connected to the connecting sleeve (31) and sealed and fixed by the provided connecting components.

2. The split-type double-acting intelligent bolt tensioner pump according to claim 1, characterized in that: The connecting assembly includes a limiting groove (501) disposed on the inner side wall of the connecting sleeve head (31) and a connecting inner liner head (504) disposed at the end of the connecting pipe head (41). The limiting slot (501) is set at equal intervals, and a through hole (502) is provided in the limiting slot (501), which extends to the outer wall of the connecting sleeve head (31); A limiting strip (505) that is adapted to and engages with the limiting groove (501) is also provided on the outer wall of the connecting inner liner head (504).

3. The split-type double-acting intelligent bolt tensioner pump according to claim 2, characterized in that: A fastening screw groove (506) is provided on the limit strip (505); The locking strip (505) and the locking groove (501) are fixed by the fastening screw (503).

4. The split-type double-acting intelligent bolt tensioner pump according to claim 2, characterized in that: The connection component also includes auxiliary components; The auxiliary component includes positioning grooves (601) equidistantly arranged at the ends of the connecting inner liner head (504), and mounting screw grooves (602) provided in the positioning grooves (601).

5. The split-type double-acting intelligent bolt tensioner pump according to claim 4, characterized in that: The auxiliary component also includes a sealing head (603), a positioning protrusion (604) symmetrically arranged at one end of the sealing head (603), and a cylindrical through groove (605) symmetrically arranged through the sealing head (603), the cylindrical through groove (605) extending into the positioning protrusion (604); The positioning protrusion (604) and the positioning groove (601) are inserted together to provide positioning for the sealing head (603), and the sealing head (603) is fixed by the cooperation of the mounting pin (606) and the mounting screw groove (602).

6. The split-type double-acting intelligent bolt tensioner pump according to claim 5, characterized in that: An auxiliary groove (701) is provided on the end face of one end of the plugging head (603). The auxiliary groove (701) is annular; the auxiliary groove (701) provides a receiving function for the pin head of the mounting pin (606) on the one hand; on the other hand, it provides a sealing auxiliary function for the connection between the sealing head (603) and the connecting sleeve head (31).

7. The split-type double-acting intelligent bolt tensioner pump according to claim 5, characterized in that: A first annular drainage groove (801) is also provided on the outer wall of the plug head (603).

8. The split-type double-acting intelligent bolt tensioner pump according to claim 5, characterized in that: A second annular drainage groove (802) is provided on the inner side wall of the connecting sleeve head (31). The second annular drainage groove (802) and the first annular drainage groove (801) work together to form an annular drainage cavity, which provides a drainage effect for the overflowing oil.

9. The split-type double-acting intelligent bolt tensioner pump according to claim 8, characterized in that: A drainage tube (803) is also provided at the bottom of the outer side wall of the connecting sleeve head (31). The drainage tube (803) is connected to the second annular drainage groove (802), and the bottom end of the drainage tube (803) is threaded and threaded to the connecting bottle opening (804) at the top of the transparent collection bottle (805).

10. The split-type double-acting intelligent bolt tensioner pump according to claim 5, characterized in that: The plug (603) is provided at the end of the connecting inner liner head (504). The plug (603) is adapted to be inserted into the inner cavity of the connecting sleeve head (31). The plug (603) is set as annular, and its outer side wall is adapted to fit the inner side wall of the connecting sleeve head (31).

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