CN219691856U - Nitrogen charging machine for energy accumulator - Google Patents

Abstract

The utility model provides an energy accumulator nitrogen charging machine, and relates to the technical field of energy accumulator nitrogen charging equipment. An energy accumulator nitrogen charging machine comprises a vehicle body, a nitrogen storage tank and a tank clamping mechanism; the vehicle body is connected with the tank body mounting block, and the nitrogen storage tank is connected with the tank body mounting block; the two sides of the tank body mounting block are provided with a first mounting groove and a second mounting groove, the first mounting groove is connected with a first rotating shaft, and the second mounting groove is connected with a second rotating shaft; the first clamping block of the tank body clamping mechanism is connected to the first rotating shaft, and the second clamping block is connected to the second rotating shaft; the bottom of jar body installation piece is connected to extrusion portion, and first grip block is connected to extrusion portion's one end, and the second grip block is connected to the other end. The nitrogen storage tank is fixed unstable on the car body, and the problem of falling risk is solved. According to the nitrogen storage tank, the nitrogen storage tank is connected to the tank body mounting block, and the mounting position of the nitrogen storage tank is locked by utilizing the two clamping blocks, so that the nitrogen storage tank is firmly mounted.

Description

Nitrogen charging machine for energy accumulator

Technical Field

The utility model relates to the technical field of energy accumulator nitrogen charging equipment, in particular to an energy accumulator nitrogen charging machine.

Background

The accumulator is an energy storage device in a hydro-pneumatic system. At proper time, the energy accumulator converts the energy in the system into compression energy or potential energy to be stored, and when the system needs the energy, the energy accumulator converts the compression energy or potential energy into energy such as hydraulic pressure or air pressure to be released, and the energy is supplied to the system again. When the instantaneous pressure of the system increases, the energy accumulator can absorb the energy of the part so as to ensure that the pressure of the whole system is normal.

In the above prior art, the accumulator may be divided into: spring type, piston type, gas type. The piston type energy accumulator is used for converting pressure energy in a hydraulic system into gravitational potential energy by lifting a mass block loaded on a sealing piston. When the piston type energy accumulator is used for nitrogen charging operation, the nitrogen storage tank needs to be transported to the vicinity of the energy accumulator so as to charge nitrogen for the energy accumulator. The nitrogen storage tank needs to be directly placed on the carrier body in the transportation process.

However, the fixed position of the tank body on the vehicle body is not firm, and the safety risk that the nitrogen storage tank falls off from the vehicle body exists when the vehicle body jolts in the transportation process.

Disclosure of Invention

The utility model aims to provide an energy accumulator nitrogen charging machine, which solves the technical problems in the prior art that a nitrogen storage tank is directly placed on a vehicle body for transportation, the tank body is unstable to fix, and the falling risk exists.

The utility model provides an energy accumulator nitrogen charging machine, which comprises a vehicle body, a nitrogen storage tank and a tank body clamping mechanism;

the bottom plate of the vehicle body is connected with a tank body mounting block, and the top of the tank body mounting block is provided with a tank body accommodating groove; the nitrogen storage tank is connected with the tank body accommodating groove;

the two sides of the tank body mounting block are respectively provided with a first mounting groove and a second mounting groove, the first mounting groove is connected with a first rotating shaft, and the second mounting groove is connected with a second rotating shaft;

the tank body clamping mechanism comprises a first clamping block, a second clamping block and an extrusion part; the first clamping block is connected to the first rotating shaft, and the second clamping block is connected to the second rotating shaft; the first clamping block and the second clamping block have the same structure and are oppositely arranged; the upper end of the first clamping block and the upper end of the second clamping block extend out of the upper end face of the tank body mounting block and are arranged above the nitrogen storage tank;

the extrusion part is connected with the bottom of the tank body mounting block, one end of the extrusion part is connected with the first clamping block, and the other end of the extrusion part is connected with the second clamping block; the extrusion part can drive the upper end of the first clamping block and the upper end of the second clamping block to be opened or closed so as to enable the first clamping block and the second clamping block to release or lock the nitrogen storage tank.

Further, the extrusion part comprises a bidirectional threaded rod, a first elastic piece, a first lock nut, a second elastic piece, a second lock nut and a driving motor;

the middle position of the bidirectional threaded rod is connected with a stop block at the bottom of the tank body mounting block;

the first elastic piece and the first lock nut are connected with one end of the bidirectional threaded rod and are arranged on one side of the stop block; the second elastic piece and the second lock nut are connected with the other end of the bidirectional threaded rod and are arranged on the other side of the stop block;

the lower end of the first clamping block is connected with one end of the bidirectional threaded rod and is arranged between the first elastic piece and the first lock nut; the lower end of the second clamping block is connected with the other end of the bidirectional threaded rod and is arranged between the second elastic piece and the second lock nut;

the output end of the driving motor is connected with a bidirectional threaded rod.

Further, on the bottom plate, one side of the tank body installation block is connected with a first reinforcement block, and the other side is connected with a second reinforcement block;

the lower part of the first reinforcing block is provided with a first mounting hole, and one end of the bidirectional threaded rod is connected into the first mounting hole; the lower part of the second reinforcing block is provided with a second mounting hole, and the driving motor is connected with the second mounting hole.

Further, the inner side surface of the upper end of the first clamping block is provided with an inwards concave arc surface, and clamping teeth are arranged in the arc surface.

Further, the top position of arcwall face is equipped with first reinforcement groove in the top of clamping tooth, and first reinforcement strip is connected in first reinforcement groove.

Further, the inside of jar body holding tank is equipped with the second and consolidates the groove, and the second consolidates the inslot connection second and consolidates the strip.

Further, the device also comprises two tank body reinforcing mechanisms, wherein the two tank body reinforcing mechanisms are respectively connected with the first reinforcing block and the second reinforcing block, and the output ends of the two tank body reinforcing mechanisms are respectively connected with the outer side of the upper end of the first clamping block and the outer side of the upper end of the second clamping block;

the tank body reinforcing mechanism comprises a hydraulic cylinder, an abutting plane is arranged on the outer side face of the upper portion of the first clamping block, a jacking groove is formed in the abutting plane, and the output end of the hydraulic cylinder is connected into the jacking groove.

Further, the output end of the hydraulic cylinder is sleeved with a third elastic piece, one end of the third elastic piece is abutted against the outer side face of the first reinforcing block, and the other end of the third elastic piece is abutted against the abutting plane of the first clamping block.

Further, the outer side face of the first reinforcing block is connected with a first accommodating block, the first accommodating block is provided with a first accommodating groove, the outer side face of the abutting plane is connected with a second accommodating block, and the second accommodating block is provided with a second accommodating groove;

one end of the third elastic piece is abutted in the first accommodating groove, and the other end of the third elastic piece is abutted in the second accommodating groove.

Further, a first elastic pad is arranged in the first accommodating groove, and a second elastic pad is arranged in the second accommodating groove.

The utility model provides an energy accumulator nitrogen charging machine, which has the following technical effects:

connect jar body installation piece on the bottom plate of automobile body, the top of jar body installation piece sets up the jar body holding tank that holds nitrogen gas storage jar, and nitrogen gas storage jar transversely places in jar body holding tank, fixes the bottom position of nitrogen gas storage jar. The tank body mounting block comprises a tank body mounting block, a tank body clamping mechanism and a tank body clamping mechanism. The first clamping block and the second clamping block have the same structure, so that the clamping forces of the two clamping blocks are the same. The first clamping block and the second clamping block are oppositely arranged, and the upper end of the first clamping block and the upper end of the second clamping block extend out of the upper end face of the tank body installation block and are arranged above the nitrogen storage tank so as to clamp and fix the upper position of the nitrogen storage tank by utilizing the upper ends of the two clamping blocks. The bottom of jar body installation piece is connected to jar body fixture's extrusion portion, and first grip block is connected to extrusion portion's one end, and the second grip block is connected to the other end, and during the use, extrusion portion can drive the upper end of first grip block, the upper end of second grip block and open or close to make first grip block, second grip block release or lock nitrogen gas storage jar, lock the upper portion mounted position of nitrogen gas storage jar, ensure the steadiness of nitrogen gas storage jar installation on the automobile body.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of an accumulator nitrogen charger provided by an embodiment of the present utility model;

fig. 2 is an enlarged view of a portion a in fig. 1;

fig. 3 is an enlarged view of a portion B in fig. 1;

fig. 4 is an enlarged view of a portion C in fig. 1;

fig. 5 is a top view of an accumulator nitrogen charger according to an embodiment of the present utility model.

Icon:

100-car body; 200-nitrogen storage tank; 300-a tank clamping mechanism; 400-tank reinforcing mechanism;

101-a bottom plate; 102-a tank body mounting block; 103-a tank accommodating groove; 104-a first mounting groove; 105-a second mounting slot; 106-a first rotating shaft; 107-a second spindle; 108-a stop; 109-a first reinforcing block; 110-a second reinforcing block; 111-a second reinforcing strip; 112-a first accommodation block; 113-a first receiving groove;

301-a first clamping block; 302-a second clamping block; 303—an extrusion; 304-a bi-directional threaded rod; 305-a first elastic member; 306-a first lock nut; 307-a second elastic member; 308-second lock nut; 309-a drive motor; 310-arc surface; 311-clamping teeth; 312-a first reinforcing strip; 313-pressing groove; 314-a second accommodation block; 315-a second accommodation groove;

401-a hydraulic cylinder; 402-third elastic member.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 5, the nitrogen charging machine for the energy accumulator provided by the utility model comprises a vehicle body 100, a nitrogen storage tank 200 and a tank clamping mechanism 300;

the bottom plate 101 of the car body 100 is connected with a tank body mounting block 102 by bolts, the bottom of the bottom plate 101 is connected with four universal wheels with brakes, and the top of the tank body mounting block 102 is provided with a tank body accommodating groove 103; the nitrogen storage tank 200 is connected in the tank body accommodating groove 103; a vertically disposed armrest plate is connected to the left end of the upper end surface of the bottom plate 101, and an operator can hold the armrest plate to push the vehicle body 100.

Referring to fig. 5, a first mounting groove 104 and a second mounting groove 105 are respectively formed on the left and right sides of the tank body mounting block 102, the first mounting groove 104 is connected with a first rotating shaft 106, and the second mounting groove 105 is connected with a second rotating shaft 107;

the tank clamping mechanism 300 comprises a first clamping block 301, a second clamping block 302 and an extrusion part 303; the first clamping block 301 is connected to the first rotating shaft 106, and the second clamping block 302 is connected to the second rotating shaft 107; the first clamping block 301 and the second clamping block 302 have the same structure, and the first clamping block 301 and the second clamping block 302 are oppositely arranged; the upper ends of the first clamping block 301 and the second clamping block 302 extend out of the upper end surface of the tank body mounting block 102 and are arranged above the nitrogen storage tank 200;

the extrusion part 303 is connected with the bottom of the tank body mounting block 102, the left end of the extrusion part 303 is connected with the first clamping block 301, and the right end of the extrusion part 303 is connected with the second clamping block 302; the pressing portion 303 can drive the upper ends of the first clamping block 301 and the second clamping block 302 to open or close, so that the first clamping block 301 and the second clamping block 302 release or lock the nitrogen storage tank 200.

Referring to fig. 1 and 5, in the half-open state of the tank holding mechanism 300, in this embodiment, the tank accommodating groove 103 is an elongated arc groove recessed inwards to accommodate the arc surface of the outer surface of the nitrogen storage tank 200, so as to ensure that the bottom position of the nitrogen storage tank 200 is fixed and stable in the arc groove. The first clamping block 301 is connected to the first rotation shaft 106, so that the upper and lower ends of the first clamping block 301 can rotate around the first rotation shaft 106. The second clamping block 302 is connected to the second rotating shaft 107, so that the upper and lower ends of the second clamping block 302 can rotate around the second rotating shaft 107. The first clamping block 301 and the second clamping block 302 are oppositely arranged, and the inner sides of the two clamping blocks are provided with inward concave cambered structures, so that the nitrogen storage tank 200 is accommodated between the two clamping blocks. When the nitrogen storage tank 200 is used, the extrusion part 303 rotates clockwise, the upper ends of the first clamping block 301 and the second clamping block 302 are outwards opened, at this time, the nitrogen storage tank 200 can be placed into the tank body accommodating groove 103 for storage, then the extrusion part 303 rotates anticlockwise, the upper ends of the first clamping block 301 and the second clamping block 302 are inwards closed, and the upper side face of the nitrogen storage tank 200 can be reinforced.

The bottom position of the nitrogen storage tank 200 is fixed by the tank body accommodating groove 103, and the top position of the nitrogen storage tank 200 is fixed by the combination structure of the two clamping blocks and the extrusion part 303, so that the nitrogen storage tank 200 is firmly installed on the vehicle body 100 and cannot slide.

In one embodiment of the present utility model, referring to fig. 1, the pressing part 303 includes a bi-directional threaded rod 304, a first elastic member 305, a first locking nut 306, a second elastic member 307, a second locking nut 308, and a driving motor 309;

the middle position of the bidirectional threaded rod 304 is connected with a stop block 108 at the bottom of the tank body mounting block 102;

the first elastic piece 305 and the first lock nut 306 are connected with the left end of the bidirectional threaded rod 304 and are arranged on the left side of the stop block 108; the second elastic piece 307 and the second lock nut 308 are connected with the right end of the bidirectional threaded rod 304 and are arranged on the right side of the stop block 108;

the lower end of the first clamping block 301 is connected with the left end of the bidirectional threaded rod 304 and is arranged between the first elastic piece 305 and the first lock nut 306; the lower end of the second clamping block 302 is connected with the right end of the bidirectional threaded rod 304 and is arranged between the second elastic piece 307 and the second lock nut 308;

the output of the drive motor 309 is connected to the bi-directional threaded rod 304.

Specifically, in the present embodiment, the first elastic member 305 and the second elastic member 307 are springs. The middle position of the bidirectional threaded rod 304 is connected with a bearing, a through hole is arranged in the middle position of the stop block 108, and the bearing is connected at the through hole.

When the nitrogen storage tank 200 is used, the driving motor 309 drives the bidirectional threaded rod 304 to rotate clockwise, the first lock nut 306 and the second lock nut 308 move inwards respectively, namely in the same direction, the elastic force of the first elastic piece 305 and the second elastic piece 307 is released, the lower end of the first clamping block 301 and the lower end of the second clamping block 302 are respectively extruded inwards, the upper end of the first clamping block 301 and the upper end of the second clamping block 302 are opened outwards, and at the moment, the nitrogen storage tank 200 can be placed in the tank body accommodating groove 103 for storage.

After the nitrogen storage tank 200 is placed, the driving motor 309 drives the bi-directional threaded rod 304 to rotate anticlockwise, the first lock nut 306 and the second lock nut 308 respectively move outwards, namely in opposite directions, the lower ends of the first clamping block 301 and the second clamping block 302 are respectively extruded outwards, the elastic force of the first elastic piece 305 and the elastic force of the second elastic piece 307 are extruded, the upper ends of the first clamping block 301 and the second clamping block 302 are closed inwards, and at the moment, the upper end face of the nitrogen storage tank 200 can be fixed by the two clamping blocks.

In one embodiment of the present utility model, referring to fig. 1 and 5, a first reinforcing block 109 is connected to the bottom plate 101 by bolts on the left side of the tank mounting block 102, and a second reinforcing block 110 is connected to the right side by bolts;

the lower part of the first reinforcing block 109 is provided with a first mounting hole, and the left end of the bidirectional threaded rod 304 is connected into the first mounting hole through a bearing; the lower part of the second reinforcing block 110 is provided with a second mounting hole, the driving motor 309 is connected in the second mounting hole, and the output end of the driving motor 309 is connected with the right end of the bidirectional threaded rod 304.

In this embodiment, two reinforcing blocks are used to fix the positions of the left and right ends of the driving motor 309 and the bidirectional threaded rod 304, respectively, so as to ensure that the installation position of the bidirectional threaded rod 304 is firm.

In one embodiment of the present utility model, referring to fig. 1 and 2, an inner side surface of an upper end of the first clamping block 301 has an inward concave arc surface 310, and clamping teeth 311 are disposed in the arc surface 310.

In the present embodiment, the upper end surface left side position of the nitrogen gas storage tank 200 is clamped by the arcuate surface 310. Similarly, an arc surface is provided at a position corresponding to the second clamp block 302, and the right side of the upper end surface of the nitrogen storage tank 200 is clamped by the arc surface.

The tip of the clamping tooth 311 is disposed downward to ensure that the upper end of the first clamping block 301 can clamp the upper end surface left side position of the nitrogen storage tank 200 by the clamping tooth 311. Similarly, clamping teeth are provided at corresponding positions of the second clamping block 302, and the upper end of the second clamping block 302 can be clamped at the right side position of the upper end face of the nitrogen storage tank 200.

In one embodiment of the present utility model, referring to fig. 1 and 2, a first reinforcement groove is formed above the clamping tooth 311 at the top of the arc surface 310, and the first reinforcement groove is connected to a first reinforcement bar 312.

In this embodiment, the first reinforcing groove is a strip groove formed in the arc surface 310, the first reinforcing strip 312 is bonded in the strip groove, the first reinforcing strip 312 is a rubber strip, and the rubber strip protrudes out of the strip groove to better fit the outer side surface of the nitrogen storage tank 200, and the friction force between the nitrogen storage tank 200 and the first clamping block 301 is increased by using the rubber strip.

Similarly, a rubber strip is provided at the same position of the second clamp block 302, and the friction force between the nitrogen gas storage tank 200 and the second clamp block 302 is increased by the rubber strip.

According to the utility model, the friction force between the upper ends of the two clamping blocks and the nitrogen storage tank 200 is increased by using the two rubber strips, so that the firmness of the upper end surface of the nitrogen storage tank 200 is ensured.

In one embodiment of the present utility model, referring to fig. 1 and 3, a second reinforcement groove is provided in the interior of the can receiving groove 103, and the second reinforcement groove is connected to the second reinforcement bar 111.

In this embodiment, the second reinforcing strip 111 also adopts a rubber strip structure, and the rubber strip protrudes out of the second reinforcing groove to better fit the outer side surface of the nitrogen storage tank 200. A plurality of rubber strips are arranged in the tank body accommodating groove 103, so that friction force between the bottom of the nitrogen storage tank 200 and the tank body accommodating groove 103 is increased, and the bottom installation position of the nitrogen storage tank 200 is ensured to be firm.

In one embodiment of the present utility model, referring to fig. 1, 4 and 5, the tank body reinforcing mechanism further comprises two tank body reinforcing mechanisms 400, wherein the two tank body reinforcing mechanisms 400 are respectively connected to the first reinforcing block 109 and the second reinforcing block 110, and the output ends of the two tank body reinforcing mechanisms 400 are respectively connected to the outer side of the upper end of the first clamping block 301 and the outer side of the upper end of the second clamping block 302;

the tank body reinforcing mechanism 400 comprises a hydraulic cylinder 401, an abutting plane is arranged on the outer side face of the upper portion of the first clamping block 301, a jacking groove 313 is formed in the abutting plane, and the output end of the hydraulic cylinder 401 is connected into the jacking groove 313. The abutment plane is provided to facilitate the installation of the hydraulic cylinder 401 and to ensure a better fit between the side surface of the first clamping block 301 and the side surface of the first reinforcing block 109.

Similarly, the outer side surface of the upper portion of the second clamping block 302 also has an abutment plane, the abutment plane is provided with a pressing groove 313, and the output end of the right-end hydraulic cylinder 401 is connected in the pressing groove 313.

In this embodiment, the pressing groove 313 is a cylindrical groove recessed inwards, and a rubber pad is disposed at the bottom of the pressing groove 313, so that the output end of the hydraulic cylinder 401 directly abuts against the rubber pad, and the stability of the output end of the hydraulic cylinder 401 is ensured. When the first clamping block 301 and the second clamping block 302 move towards the inner side direction until the two sides of the nitrogen storage tank 200 are clamped, the two tank body reinforcing mechanisms 400 are restarted, the upper ends of the two clamping blocks are clamped again by the two tank body reinforcing mechanisms 400, and the installation position of the nitrogen storage tank 200 is ensured to be stable.

In this embodiment, in order to facilitate the operation, a PLC controller is mounted on the armrest plate of the vehicle body 100, and the PLC controller is electrically connected to the driving motor 309 and the two tank reinforcing mechanisms 400, respectively, and four buttons are provided, that is: the device start button, the device close button, the driving motor 309 start button, and the two tank strengthening mechanism 400 start buttons are more convenient for operating the whole device by adopting the automatic control mode.

In one embodiment of the present utility model, referring to fig. 1, 4 and 5, the output end of the hydraulic cylinder 401 is sleeved with the third elastic member 402, the left end of the third elastic member 402 abuts against the outer side surface of the first reinforcing block 109, and the right end abuts against the abutment plane of the first clamping block 301.

In the present embodiment, the third elastic member 402 employs a spring. When the hydraulic clamping device is used, the output ends of the two hydraulic cylinders 401 move outwards to squeeze the springs, and the compression force of the springs is used for reinforcing the two clamping blocks.

In one embodiment of the present utility model, referring to fig. 1, 4 and 5, the outer side surface of the first reinforcing block 109 is connected to the first accommodating block 112, the first accommodating block 112 is provided with a first accommodating groove 113, the outer side surface of the abutting plane is connected to the second accommodating block 314, and the second accommodating block 314 is provided with a second accommodating groove 315;

the left end of the third elastic member 402 abuts in the first accommodation groove 113, and the right end abuts in the second accommodation groove 315.

In this embodiment, the first accommodating block 112 and the second accommodating block 314 are disc-shaped, and are respectively connected with the outer side surface of the first reinforcing block 109 and the outer side surface of the abutting plane by bolts, and the two accommodating grooves are all concave circles, so that two ends of the spring can be accommodated in the two circular accommodating grooves, and the two ends of the spring are fixed.

In one embodiment of the present utility model, referring to fig. 1, 4 and 5, a first elastic pad is disposed in the first receiving groove 113, and a second elastic pad is disposed in the second receiving groove 315.

In this embodiment, the first elastic pad and the second elastic pad both adopt rubber pad structures, so as to ensure compression resilience force at two ends of the spring.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The nitrogen charging machine of the energy accumulator is characterized by comprising a vehicle body (100), a nitrogen storage tank (200) and a tank body clamping mechanism (300);

a tank body mounting block (102) is connected to a bottom plate (101) of the vehicle body (100), and a tank body accommodating groove (103) is formed in the top of the tank body mounting block (102); the nitrogen storage tank (200) is connected in the tank body accommodating groove (103);

a first mounting groove (104) and a second mounting groove (105) are respectively arranged on two sides of the tank body mounting block (102), the first mounting groove (104) is connected with a first rotating shaft (106), and the second mounting groove (105) is connected with a second rotating shaft (107);

the tank body clamping mechanism (300) comprises a first clamping block (301), a second clamping block (302) and an extrusion part (303); the first clamping block (301) is connected to the first rotating shaft (106), and the second clamping block (302) is connected to the second rotating shaft (107); the first clamping block (301) and the second clamping block (302) have the same structure, and the first clamping block (301) and the second clamping block (302) are oppositely arranged; the upper ends of the first clamping block (301) and the second clamping block (302) extend out of the upper end surface of the tank body mounting block (102) and are arranged above the nitrogen storage tank (200);

the extrusion part (303) is connected with the bottom of the tank body mounting block (102), one end of the extrusion part (303) is connected with the first clamping block (301), and the other end is connected with the second clamping block (302); the extrusion part (303) can drive the upper end of the first clamping block (301) and the upper end of the second clamping block (302) to be opened or closed, so that the first clamping block (301) and the second clamping block (302) release or lock the nitrogen storage tank (200).

2. The accumulator nitrogen charging machine according to claim 1, wherein the pressing portion (303) comprises a bi-directional threaded rod (304), a first elastic member (305), a first lock nut (306), a second elastic member (307), a second lock nut (308) and a driving motor (309);

the middle position of the bidirectional threaded rod (304) is connected with a stop block (108) at the bottom of the tank body mounting block (102);

the first elastic piece (305) and the first lock nut (306) are connected with one end of the bidirectional threaded rod (304) and are arranged on one side of the stop block (108); the second elastic piece (307) and the second lock nut (308) are connected with the other end of the bidirectional threaded rod (304) and are arranged on the other side of the stop block (108);

the lower end of the first clamping block (301) is connected with one end of the bidirectional threaded rod (304) and is arranged between the first elastic piece (305) and the first lock nut (306); the lower end of the second clamping block (302) is connected with the other end of the bidirectional threaded rod (304) and is arranged between the second elastic piece (307) and the second lock nut (308);

the output end of the driving motor (309) is connected with the bidirectional threaded rod (304).

3. An accumulator nitrogen charging machine according to claim 2, characterized in that on the base plate (101), a first reinforcing block (109) is connected to one side of the tank mounting block (102), and a second reinforcing block (110) is connected to the other side;

a first mounting hole is formed in the lower portion of the first reinforcing block (109), and one end of the bidirectional threaded rod (304) is connected into the first mounting hole; the lower part of the second reinforcing block (110) is provided with a second mounting hole, and the driving motor (309) is connected with the second mounting hole.

4. An accumulator nitrogen charging machine according to claim 1, wherein the inner side surface of the upper end of the first clamping block (301) is provided with an inward concave arc surface (310), and clamping teeth (311) are arranged in the arc surface (310).

5. An accumulator nitrogen charger according to claim 4, characterized in that a first reinforcement groove is provided above the clamping tooth (311) at the top position of the arc surface (310), and a first reinforcement strip (312) is connected to the first reinforcement groove.

6. An accumulator nitrogen charger according to claim 1, characterized in that the tank receiving groove (103) is internally provided with a second reinforcement groove, which is connected to a second reinforcement bar (111).

7. The nitrogen charging machine for the energy accumulator according to claim 3, further comprising two tank body reinforcing mechanisms (400), wherein the two tank body reinforcing mechanisms (400) are respectively connected to the first reinforcing block (109) and the second reinforcing block (110), and output ends of the two tank body reinforcing mechanisms (400) are respectively connected to the outer side of the upper end of the first clamping block (301) and the outer side of the upper end of the second clamping block (302);

the tank body reinforcing mechanism (400) comprises a hydraulic cylinder (401), an abutting plane is arranged on the outer side face of the upper portion of the first clamping block (301), a jacking groove (313) is formed in the abutting plane, and the output end of the hydraulic cylinder (401) is connected into the jacking groove (313).

8. The nitrogen charging machine for the energy accumulator according to claim 7, wherein an output end of the hydraulic cylinder (401) is sleeved with a third elastic piece (402), one end of the third elastic piece (402) is abutted against an outer side surface of the first reinforcing block (109), and the other end of the third elastic piece is abutted against an abutting plane of the first clamping block (301).

9. The nitrogen charging machine for an accumulator according to claim 8, characterized in that an outer side surface of the first reinforcement block (109) is connected with a first accommodation block (112), the first accommodation block (112) is provided with a first accommodation groove (113), an outer side surface of the abutment plane is connected with a second accommodation block (314), and the second accommodation block (314) is provided with a second accommodation groove (315);

one end of the third elastic piece (402) is abutted in the first accommodating groove (113), and the other end is abutted in the second accommodating groove (315).

10. An accumulator nitrogen charger according to claim 9, wherein a first elastic pad is arranged in the first accommodation groove (113), and a second elastic pad is arranged in the second accommodation groove (315).