CN114216925A

CN114216925A - UPS power supply shell heat resistance detection equipment

Info

Publication number: CN114216925A
Application number: CN202210165124.XA
Authority: CN
Inventors: 任国成; 顾永志; 胡文峰
Original assignee: Weifang Gaoyuan Electric Co ltd
Current assignee: Weifang Gaoyuan Electric Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-03-22
Anticipated expiration: 2042-02-23
Also published as: CN114216925B

Abstract

The invention relates to the technical field of heat resistance detection, in particular to a UPS power supply shell heat resistance detection device, which is used for carrying out thermal performance detection on a power supply shell. According to the invention, the sealing piece and the power supply shell form a closed shell, the use environment of the actual power supply shell is simulated, the detected heat resistance result is more real, and then the fan is arranged to enable the gas in the closed shell to circularly flow, so that the heat exchange between high temperature and low temperature is accelerated, and the temperature in the power supply shell is more uniform; promote detecting element reciprocating motion through No. two cylinders, make the soft power shell inner wall of ball extrusion, and then make it produce to warp sunken, carry out the multipoint mode detection to two lateral walls of power shell simultaneously in same testing environment, the testing result is more accurate also has the representative.

Description

UPS power supply shell heat resistance detection equipment

Technical Field

The invention relates to the technical field of heat resistance detection, in particular to a UPS power supply shell heat resistance detection device.

Background

The UPS power supply is a high-power uninterruptible power supply, and is a system device that connects a battery to a host and converts direct current power to utility power through a modular circuit such as a host inverter. The power supply device is mainly used for providing stable and uninterrupted power supply for a single computer, a computer network system or other power electronic equipment such as an electromagnetic valve, a pressure transmitter and the like.

UPS power supplies are widely used today and are becoming more and more powerful, and it is also becoming more and more important to maintain the normal operation of UPS power supplies. In particular, the heat productivity of a high-power UPS is very large, so that not only the heat dissipation problem of the UPS but also the heat resistance of the housing of the UPS are considered, thereby preventing the housing from being deformed due to long-term heating.

At present, when the heat resistance of the UPS shell is detected, plastic load deformation temperature test is generally carried out on a shell original plate, wherein a Chinese patent with the publication number of CN211235283U discloses a detection device for detecting the heat resistance for processing plastic PC, a positioning plate is driven to move by the rotation of a threaded rod, a detection plate is extruded to the surface of a partition plate, and detection plates with different thicknesses can be fixed; the electric heating wire heats the air blown out by the fan, so that the detection plate is in a high-temperature environment, the temperature sensor can monitor the temperature of the environment where the detection plate is located, the detection plate can be pressurized again after the detection temperature is reached, and the intensity change of the detection plate is detected.

When the scheme is used for testing the heat resistance, the working condition of an actual power supply shell cannot be simulated, namely the shell does not form a closed frame, so that more heat in a high-temperature environment overflows outwards, and when different boards are tested, the influence of external temperature is large, so that the detection result is not representative; and secondly, the deformation amount of the detection plate is small after the detection plate is pressed, and the deformation amounts of different positions on different plates are difficult to distinguish by naked eyes.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme that the heat resistance detection equipment for the UPS power supply shell is used for carrying out thermal performance detection on the power supply shell, and comprises a sealing piece for sealing the power supply shell, a heating assembly arranged on the sealing piece and a detection mechanism for feeding back a detection result, wherein the sealing piece comprises a sealing plate; the heating assembly comprises a cylinder, one side of the sealing plate, which is far away from the power supply shell, is provided with a movable plate through a cylinder fixedly connected with, the movable plate is close to a cross-shaped frame fixedly connected with one side of the cylinder, the tail end of the cross-shaped frame is connected with a heating part, a rectangular through hole is formed in the position, corresponding to the heating part, of the side wall of the sealing plate, a rubber pad is bonded on one side of the rectangular through hole, and a cross-shaped opening corresponding to the cross-shaped frame is formed in the rubber pad.

The temperature rising part comprises an installation block, the installation block is of a rectangular block structure, an axial groove is horizontally formed in the installation block, one end, away from the cross-shaped frame, of the axial groove is open, ventilation holes are formed in two ends of the installation block along four side faces and communicated with the axial groove, and a fan is arranged in each ventilation hole; mounting grooves are formed in four side faces of the mounting block, heating wires are mounted in the mounting grooves, and the heating wires are electrically connected with an external power supply.

One side of the sealing plate close to the power supply shell is provided with a temperature probe for detecting the temperature in the power supply shell, and the other side of the sealing plate is provided with a display screen for displaying the detection value of the temperature probe.

The detection mechanism comprises a second cylinder and a detection unit, and the detection unit is fixedly connected to one side, close to the power supply shell, of the side wall of the sealing plate through the second cylinder; the detection unit comprises a bottom plate fixedly connected to the end part of the second cylinder and a lifting frame arranged at the top of the bottom plate in a sliding manner; interior roof fixedly connected with electric telescopic handle of lift frame, electric telescopic handle's bottom fixedly connected with has the even board of horizontally, and the bilateral symmetry of even board is provided with the lifting piece, the preceding back lateral wall of detecting element all slides and is provided with the carriage release lever that uses with the lifting piece cooperation, and the one end that the carriage release lever is close to rectangle shells inner wall rotates to be rabbeted there is the ball.

As a preferred technical scheme of the invention, the power supply shell comprises a rectangular shell and clamping grooves which are formed in the upper side frame and the lower side frame of the opening of the rectangular shell, clamping strips are arranged on the side wall of the sealing plate corresponding to the clamping grooves, the shapes of the clamping strips are the same as those of the clamping grooves, the sizes of the clamping strips are larger than those of the clamping grooves, and the clamping strips are made of hollow rubber pieces.

As a preferred technical scheme of the invention, a rotating shaft is arranged in the shaft groove, one end of the rotating shaft is rotatably connected with the inner wall of the shaft groove, the other end of the rotating shaft is connected with a conveying shaft of a motor, a motor base for fixing the motor is arranged on the outer wall of the mounting block, and an elastic limiting piece is arranged on the outer wall of the motor base; and gear transmission sets for driving the fan are arranged at two ends of the outer wall of the rotating shaft.

As a preferred technical scheme of the invention, the fan comprises brackets, symmetrical brackets are arranged in each ventilation hole, the brackets positioned in the same ventilation hole are rotatably connected with a rotating shaft through a bearing, and fan blades are circumferentially arranged at one end of the rotating shaft, which is far away from a shaft groove.

As a preferred technical scheme of the invention, the gear transmission set comprises a driving bevel gear fixedly sleeved on the rotating shaft and driven bevel gears fixedly sleeved on the rotating shaft, and one driving bevel gear is meshed with four driven bevel gears simultaneously.

As a preferable technical scheme of the invention, the lifting piece comprises trapezoidal blocks which are uniformly distributed from top to bottom, the inclined surfaces of the trapezoidal blocks are abutted against the tail end of the moving rod, the vertically adjacent trapezoidal blocks are detachably connected through a connecting rod, and the cross-shaped frame is provided with a strip-shaped groove which is convenient for the connecting rod to move.

As a preferred technical scheme of the invention, a feedback group is arranged below each moving rod, each feedback group comprises an L-shaped rod which is arranged at the bottom of the corresponding moving rod in a sliding manner, and the L-shaped rods are connected with the corresponding moving rods through elastic pieces; the lateral wall of lift frame has all been seted up the inspection hole, has changeed the board through torsional spring connection in the inspection hole, is connected with the stay cord on the L shape pole, and the stay cord passes the lateral wall of lift frame and accesss to inside and be connected with the one end of changeing the board, still is provided with circuit feedback group in the inspection hole.

As a preferred technical scheme of the invention, the circuit feedback group is a feedback circuit consisting of a power supply, a switch, a wire and a bulb, wherein one end of the rotating plate, which is far away from the pull rope, is used for closing the press switch, the top of the sealing plate is provided with a connecting frame, the end part of the connecting frame is provided with an electromagnet, and the top of the lifting frame is embedded with a permanent magnet which is adsorbed with the electromagnet.

The heat-resistant test device has the beneficial effects that 1, the sealing piece and the power supply shell form a closed shell to simulate the use environment of the actual power supply shell, so that the detected heat-resistant result is more real, and then the fan is arranged to enable the gas in the closed shell to circularly flow, so that the heat exchange between high temperature and low temperature is accelerated, and the temperature in the power supply shell is more uniform.

2. Promote detecting element reciprocating motion through No. two cylinders, make the soft power shell inner wall of ball extrusion, and then make it produce to warp sunken, carry out the multipoint mode detection to two lateral walls of power shell simultaneously in same testing environment, the testing result is more accurate also has the representative.

3. Utilize the suction between electro-magnet and the permanent magnet to make the lift frame rise the take the altitude, the displacement that utilizes the connecting rod comes the disconnection and the closure of indirect control circuit feedback group, judges the deformation degree after the power shell is heated for a long time through bright and not bright of bulb, compares the human eye and observes that the error is littleer, and the result is more accurate.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a perspective view of the power supply housing of the present invention.

Fig. 3 is a side view of the hush panel of the present invention.

Fig. 4 is a perspective view of the spider of the present invention.

FIG. 5 is a side sectional view of the temperature increasing section of the present invention.

FIG. 6 is a schematic diagram of the structure of the detecting unit of the present invention.

Fig. 7 is an enlarged view of region a of fig. 6 according to the present invention.

Fig. 8 is an enlarged view of region B of fig. 6 according to the present invention.

In the figure: 1. a power supply housing; 10. a rectangular housing; 11. a card slot; 2. a closure member; 20. a sealing plate; 21. clamping the strip; 22. a connecting frame; 23. an electromagnet; 24. a temperature probe; 25. a display screen; 26. a rectangular through hole; 27. a rubber pad; 3. a temperature raising component; 30. a first cylinder; 31. moving the plate; 32. a cross-shaped frame; 321. a strip-shaped groove; 33. a temperature raising unit; 330. mounting blocks; 331. a shaft groove; 332. a vent hole; 333. a rotating shaft; 334. a motor base; 335. a motor; 336. a gear transmission set; 3361. a drive bevel gear; 3362. a driven bevel gear; 337. a fan; 3371. a support; 3372. a rotating shaft; 3373. a fan blade; 338. mounting grooves; 339. an electric heating wire; 34. an elastic limiting part; 4. a detection mechanism; 41. a second cylinder; 42. a detection unit; 421. a base plate; 422. a lifting frame; 4221. a detection hole; 4222. rotating the plate; 423. a guide plate; 43. an electric telescopic rod; 44. a lifting member; 441. a trapezoidal block; 442. a connecting rod; 45. a travel bar; 46. a ball bearing; 47. an L-shaped rod; 48. pulling a rope; 49. a circuit feedback group; 40. and a permanent magnet.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, 2, 3 and 4, a UPS power supply housing heat resistance detection apparatus for performing thermal performance detection on a power supply housing 1 includes a sealing member 2 for sealing the power supply housing 1, a temperature raising assembly 3 mounted on the sealing member 2, and a detection mechanism 4 for feeding back a detection result, the power supply housing 1 includes a rectangular housing 10 and a slot 11 formed in the upper and lower side frames of an opening of the rectangular housing 10, the sealing member 2 includes a sealing plate 20, a clamping strip 21 is mounted on a side wall of the sealing plate 20 corresponding to the slot 11, wherein the slot 11 is composed of a rectangular groove formed in the surface of the rectangular housing 10 and a semicircular groove formed in the rectangular groove, a diameter of the semicircular groove is greater than a height of the rectangular groove, a shape of the clamping strip 21 is the same as a shape of the slot 11, and a size of the clamping strip 21 is greater than the size of the slot 11, the clamping strip 21 is made of a hollow rubber piece, and the sealing plate 20 and the rectangular shell 10 can form a closed shell by clamping the clamping strip 21 in the clamping groove 11; warming up subassembly 3 includes a cylinder 30, seals one side that board 20 kept away from rectangular housing 10 and has a movable plate 31 through a cylinder 30 fixedly connected with, movable plate 31 is close to one side fixedly connected with cross frame 32 of a cylinder 30, the end-to-end connection of cross frame 32 has intensification portion 33, rectangle through-hole 26 has been seted up to the position that the lateral wall of sealing board 20 corresponds intensification portion 33, and one side bonding of rectangle through-hole 26 has rubber pad 27, set up the cross opening corresponding with cross frame 32 on the rubber pad 27, the cross frame 32 of being convenient for passes from rubber pad 27, rubber pad 27 set up thermal scattering and disappearing in can reducing rectangular housing 10.

Referring to fig. 1 and 5, the temperature rising portion 33 includes an installation block 330, the installation block 330 is a rectangular block structure, a shaft slot 331 is horizontally formed in the installation block 330, one end of the shaft slot 331, which is far away from the cross-shaped frame 32, is open, ventilation holes 332 are formed in two ends of the installation block 330 along four side surfaces, the ventilation holes 332 are communicated with the shaft slot 331, a fan 337 is arranged in each ventilation hole 332, a rotating shaft 333 is arranged in the shaft slot 331, one end of the rotating shaft 333 is rotatably connected with an inner wall of the shaft slot 331, the other end of the rotating shaft 333 is connected with a conveying shaft of a motor 335, a motor base 334 for fixing the motor 335 is installed on an outer wall of the installation block 330, and an elastic limiting member 34 is installed on an outer wall of the motor base 334, wherein the elastic limiting member 34 may be an elastic telescopic rod; a gear transmission group 336 for driving the fan 337 is installed at both ends of the outer wall of the rotating shaft 333; the fan 337 comprises supports 3371, symmetrical supports 3371 are installed in each ventilation hole 332, the supports 3371 in the same ventilation hole 332 are rotatably connected with a rotating shaft 3372 through a bearing, and fan blades 3373 are circumferentially installed at one end of the rotating shaft 3372 far away from the shaft groove 331; the gear transmission set 336 comprises a driving bevel gear 3361 fixedly sleeved on the rotating shaft 333 and driven bevel gears 3362 fixedly sleeved on the rotating shaft 3372, wherein one driving bevel gear 3361 is simultaneously meshed with four driven bevel gears 3362; the motor 335 is used for driving the rotating shaft 333 to rotate, so as to drive the driving bevel gears 3361 at the two ends to synchronously rotate, and the rotating shaft 3372 rotates under the meshing transmission of the driven bevel gear 3362 and the driven bevel gear 3362, so that the airflow is sucked from the opening at the right end of the shaft groove 331 and then is discharged from the vent hole 332, so as to realize the flow of the airflow; mounting groove 338 has all been seted up to four sides of installation piece 330, installs the heating wire 339 in the mounting groove 338, and heating wire 339 is connected with external power supply electricity, and heating wire 339 after the circular telegram produces the heat, and its surrounding air temperature rises, and the setting of fan 337 can make the air flow in whole rectangular shell 10 get up to accelerate the heat exchange of heating wire 339 surrounding hot gas stream and other positions cold air streams, make the temperature in rectangular shell 10 more even.

Referring to fig. 1 and 3, a temperature probe 24 for detecting the temperature inside the rectangular casing 10 is disposed on one side of the sealing plate 20 close to the rectangular casing 10, and a display screen 25 for displaying the detected value of the temperature probe 24 is mounted on the other side of the sealing plate 20.

Referring to fig. 1 and 6, the detection mechanism 4 includes a second cylinder 41 and a detection unit 42, one side of the side wall of the sealing plate 20 close to the rectangular housing 10 is fixedly connected with the detection unit 42 through the second cylinder 41, the detection unit 42 is slidably sleeved outside the cross frame 32, the detection unit 42 includes a bottom plate 421 fixedly connected to the end of the second cylinder 41 and a lifting frame 422 slidably disposed at the top of the bottom plate 421, guide plates 423 are symmetrically disposed at the top of the bottom plate 421, a guide groove slidably butted with the guide plates 423 is disposed at the bottom of the lifting frame 422, an inner top wall of the lifting frame 422 is fixedly connected with an electric telescopic rod 43, the bottom of the electric telescopic rod 43 is fixedly connected with a horizontal connecting plate, lifting pieces 44 are symmetrically disposed at two sides of the connecting plate, the lifting pieces 44 include trapezoidal blocks 441 uniformly distributed from top to bottom, and the upper and lower adjacent trapezoidal blocks 441 are detachably connected through a connecting rod 442, wherein two top trapezoidal blocks 441 are connected to two ends of the connecting plate, as shown in fig. 4, in order to avoid the obstruction of the detection unit 42 and the cross frame 32 to the movement of each other when they are still, a strip groove 321 is disposed on the cross frame 32 for facilitating the movement of the connecting rod 442, the front and back side walls of the detection unit 42 are slidably provided with moving rods 45 which are in one-to-one correspondence with the trapezoidal blocks 441 and are used in cooperation with the trapezoidal blocks, one end of the moving rod 45 close to the inner wall of the rectangular housing 10 is rotatably embedded with balls 46, the electric telescopic rod 43 is used to drive the lifting member 44 to lift, the trapezoidal blocks 441 push out the moving rods 45 in the lifting process, so that the balls 46 are abutted against the inner wall of the rectangular housing 10, when the rectangular housing 10 is in a high temperature state for a long time, the inner wall thereof is gradually softened, at this time, the force exerted by the balls 46 on the inner wall of the rectangular housing 10 is increased, and the second cylinder 41 is started to drive the detection unit 42 to move left and right, the inner wall of the rectangular shell 10 is sunken under the action of pressure, the heat resistance of the power supply shell 1 can be seen by observing the depth of the sunken part, and meanwhile, the same-temperature multipoint test is carried out on two side walls of the rectangular shell 10, so that the test result is more representative.

Referring to fig. 7 and 8, in order to make the detection result more accurate and not affected by human, a feedback group is provided under each moving bar 45, the feedback group includes an L-shaped bar 47 slidably provided at the bottom of the moving bar 45, and the L-shaped rod 47 is connected with the moving rod 45 through an elastic member, the elastic member is arranged so that the end of the L-shaped rod 47 always abuts against the inner wall of the rectangular housing 10, but the inner wall of the rectangular shell 10 cannot be extruded and deformed, the side walls of the lifting frame 422 are all provided with detection holes 4221, the detection holes 4221 are internally connected with a rotating plate 4222 through a torsion spring, the L-shaped rod 47 is connected with a pull rope 48, the pull rope 48 penetrates through the side walls of the lifting frame 422 to lead to the inside and is connected with one end of the rotating plate 4222, a circuit feedback group 49 is also arranged in the detection holes 4221, the circuit feedback group 49 is a feedback circuit consisting of a power supply, a switch, a lead and a bulb, wherein one end of the rotating plate 4222, which is far away from the pull rope 48, is used for pressing the switch to be closed.

Referring to fig. 1 and 6, a connecting frame 22 is installed on the top of the sealing plate 20, an electromagnet 23 is installed at an end of the connecting frame 22, a permanent magnet 40 is embedded at the top of the lifting frame 422, the electromagnet 23 is energized to generate a magnetic force, when the detection unit 42 is driven by the second cylinder 41 to move left and right, the detection unit 42 gradually approaches the electromagnet 23, the attraction force between the electromagnet 23 and the permanent magnet 40 is gradually increased to attract the lifting frame 422 to a certain height, at this time, the bottom plate 421 is separated from the lifting frame 422, the L-shaped rod 47 moves to a recess above the L-shaped rod under the action of the elastic member after rising, the pull rope 48 is pulled outwards for a certain distance, at this time, one end of the rotating plate 4222, which is far from the switch, is pulled up, one end of the rotating plate, which is close to the switch, is lowered to close the switch, the bulb is lighted, and if the pressure of the ball 46 on the rectangular shell 10 makes the recess generated on the inner wall of the rectangular shell have a sufficient depth, the pull of the pull cord 48 on the rotation plate 4222 is insufficient to cause the rotation plate 4222 to close the switch, and the light bulb is not lit.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a UPS power shell heat resistance check out test set for carry out thermal behavior to power shell (1) and detect, its characterized in that: the thermal performance detection equipment comprises a sealing piece (2) used for sealing a power supply shell (1), a heating assembly (3) installed on the sealing piece (2) and a detection mechanism (4) used for feeding back a detection result, wherein the sealing piece (2) comprises a sealing plate (20); the temperature rising assembly (3) comprises a first air cylinder (30), one side, far away from the power supply shell (1), of the sealing plate (20) is fixedly connected with a movable plate (31) through the first air cylinder (30), one side, close to the first air cylinder (30), of the movable plate (31) is fixedly connected with a cross-shaped frame (32), the tail end of the cross-shaped frame (32) is connected with a temperature rising part (33), a rectangular through hole (26) is formed in the position, corresponding to the temperature rising part (33), of the side wall of the sealing plate (20), a rubber pad (27) is bonded to one side of the rectangular through hole (26), and a cross-shaped opening corresponding to the cross-shaped frame (32) is formed in the rubber pad (27);

the heating part (33) comprises an installation block (330), the installation block (330) is of a rectangular block structure, a shaft groove (331) is horizontally formed in the installation block (330), one end, far away from the cross-shaped frame (32), of the shaft groove (331) is in an open shape, ventilation holes (332) are formed in two ends of the installation block (330) along four side faces, the ventilation holes (332) are communicated with the shaft groove (331), and a fan (337) is arranged in each ventilation hole (332); mounting grooves (338) are formed in four side faces of the mounting block (330), heating wires (339) are mounted in the mounting grooves (338), and the heating wires (339) are electrically connected with an external power supply;

a temperature probe (24) for detecting the temperature in the power supply shell (1) is arranged on one side, close to the power supply shell (1), of the sealing plate (20), and a display screen (25) for displaying the detection value of the temperature probe (24) is arranged on the other side of the sealing plate (20);

the detection mechanism (4) comprises a second cylinder (41) and a detection unit (42), and the detection unit (42) is fixedly connected to one side, close to the power supply shell (1), of the side wall of the sealing plate (20) through the second cylinder (41); the detection unit (42) comprises a bottom plate (421) fixedly connected to the end part of the second cylinder (41) and a lifting frame (422) arranged on the top of the bottom plate (421) in a sliding manner; interior roof fixedly connected with electric telescopic handle (43) of lift frame (422), the bottom fixed connection of electric telescopic handle (43) has the even board of horizontally, and the bilateral symmetry of even board is provided with lifting piece (44), lateral wall all slides around detecting element (42) and is provided with carriage release lever (45) with lifting piece (44) cooperation use, and the one end rotation scarf joint that carriage release lever (45) are close to rectangle casing (10) inner wall has ball (46).

2. The UPS power supply case heat resistance detection apparatus of claim 1, wherein: the power supply shell (1) comprises a rectangular shell (10) and clamping grooves (11) formed in the upper side frame and the lower side frame of the opening of the rectangular shell (10), clamping strips (21) are installed at the positions, corresponding to the clamping grooves (11), of the side wall of the sealing plate (20), the clamping strips (21) are the same as the clamping grooves (11), the size of each clamping strip (21) is larger than that of each clamping groove (11), and each clamping strip (21) is made of a hollow rubber piece.

3. The UPS power supply case heat resistance detection apparatus of claim 1, wherein: a rotating shaft (333) is arranged in the shaft groove (331), one end of the rotating shaft (333) is rotatably connected with the inner wall of the shaft groove (331), the other end of the rotating shaft (333) is connected with a conveying shaft of the motor (335), a motor base (334) used for fixing the motor (335) is installed on the outer wall of the installation block (330), and an elastic limiting part (34) is installed on the outer wall of the motor base (334); and gear transmission groups (336) for driving the fan (337) are arranged at two ends of the outer wall of the rotating shaft (333).

4. The apparatus of claim 3, wherein the apparatus for detecting the heat resistance of the UPS power supply case comprises: fan (337) include support (3371), install symmetrical support (3371) in every ventilation hole (332), and support (3371) that are arranged in same ventilation hole (332) is connected with axis of rotation (3372) through the bearing rotation, and flabellum (3373) are installed to one end circumference that axis of rotation (3372) kept away from axle groove (331).

5. The UPS power supply enclosure heat resistance detection apparatus of claim 4, wherein: the gear transmission set (336) comprises a driving bevel gear (3361) fixedly sleeved on the rotating shaft (333) and driven bevel gears (3362) fixedly sleeved on the rotating shaft (3372), and one driving bevel gear (3361) is meshed with four driven bevel gears (3362) simultaneously.

6. The UPS power supply case heat resistance detection apparatus of claim 1, wherein: the lifting piece (44) comprises trapezoid blocks (441) which are uniformly distributed from top to bottom, the inclined surfaces of the trapezoid blocks (441) are abutted to the tail ends of the movable rods (45), the upper trapezoid blocks (441) and the lower trapezoid blocks (441) which are adjacent to each other are detachably connected through connecting rods (442), and the cross-shaped frame (32) is provided with a strip-shaped groove (321) which is convenient for the connecting rods (442) to move.

7. The apparatus for detecting a heat resistance of a UPS power supply case according to any one of claims 1 to 6, wherein: a feedback group is arranged below each moving rod (45), the feedback group comprises an L-shaped rod (47) which is arranged at the bottom of the moving rod (45) in a sliding mode, and the L-shaped rod (47) is connected with the moving rod (45) through an elastic piece; the detection holes (4221) are formed in the side wall of the lifting frame (422), the rotating plate (4222) is connected into the detection holes (4221) through torsion springs, a pull rope (48) is connected onto the L-shaped rod (47), the pull rope (48) penetrates through the side wall of the lifting frame (422) to be led into the lifting frame and is connected with one end of the rotating plate (4222), and a circuit feedback group (49) is further arranged in the detection holes (4221).

8. The apparatus of claim 7, wherein the apparatus for detecting the heat resistance of the UPS power supply housing comprises: the circuit feedback group (49) is a feedback circuit consisting of a power supply, a switch, a wire and a bulb, wherein one end of the rotary plate (4222) far away from the pull rope (48) is used for pressing the switch to be closed, the top of the sealing plate (20) is provided with the connecting frame (22), the end part of the connecting frame (22) is provided with the electromagnet (23), and the top of the lifting frame (422) is embedded with the permanent magnet (40) adsorbed with the electromagnet (23).