A pressure testing machine for quality inspection of automobile parts

Abstract

The present application provides a pressure testing machine for automobile parts quality inspection, which relates to the field of automobile parts quality inspection equipment. A pressure testing machine for automobile parts quality inspection comprises: a frame, the bottom of which is fixedly connected to a base; and clamping assemblies are arranged around the base. The pressure testing machine for automobile parts quality inspection realizes synchronous clamping and positioning effects for multiple groups of parts through the cooperation of the clamping assemblies to prevent the parts from being displaced. Through the cooperation of the lifting assembly, the second screw rod and the second screw rod sleeve perform adaptive lifting actions through the support, the bucket and the test seat. Through the cooperation of the counterweight assembly, the water tower provides water source, and the water distribution pipe rack adds water to increase weight for four groups of water adding telescopic pipes and the first metering valve, and the four groups of water reducing telescopic pipes, the second metering valve and the water storage bucket perform water removal and weight reduction, so as to realize the pressure increase and pressure reduction adjustment effect in the process of pressure testing of multiple groups of parts and improve the pressure testing efficiency of multiple groups of parts.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts quality testing equipment, and in particular to a pressure testing machine for automobile parts quality testing. Background Art

[0002] Auto parts are the various units that make up the whole car and a kind of product that serves the car. There are many kinds of auto parts. Nowadays, there are more and more car brands and more and more car types. Cars can be divided into passenger cars and commercial vehicles. Passenger cars refer to vehicles with less than nine seats (including the driver's seat) and the main purpose of carrying passengers. Specifically, passenger cars are divided into basic passenger cars, namely sedans, MPV models, SUV models and other models such as pickup trucks.

[0003] In the prior art (the patent application with the publication number CN116148065B and the patent name of a pressure testing machine and testing method for quality inspection of automobile parts), the clamping mechanism can drive the clamping wheel to fix parts of different sizes, and under the action of the driving assembly, the limiting mechanism is driven to move through the limiting plate, so that the pressure plate is driven to move in the direction away from the base through the supporting assembly. When the limiting plate moves to the position of contact with the limiting wheel, under the action of the limiting wheel, the two limiting plates are driven to move in the direction away from each other so that the limiting plate is separated from the driving assembly. Under the action of the supporting assembly, the pressure plate is driven to move quickly toward the base, thereby applying a certain pressure on the parts. The height of the limiting wheel can also be adjusted by the adjusting assembly to change the pressure applied by the pressure plate on the parts. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] After the production of auto parts is completed, it is necessary to extract several groups of parts from this batch for pressure quality testing. For current pressure testing equipment, most of them can only perform pressure testing on one group of parts at a time, and the pressure threshold of each group of parts is different. The pressure value of the pressure testing equipment needs to be adjusted frequently, which is troublesome and inefficient. Summary of the invention

[0005] The present application aims to at least solve the technical problem in the prior art that multiple groups of parts cannot be efficiently pressure tested by pressure increase and pressure decrease based on multi-directional automatic positioning. To this end, the present application proposes a pressure testing machine for automobile parts quality inspection.

[0006] A pressure testing machine for automobile parts quality inspection according to an embodiment of the present application includes: a frame, a bottom of which is fixedly connected to a base;

[0007] Clamping components are arranged around the base;

[0008] Lifting components and counterweight components are respectively arranged around the frame.

[0009] Preferably, the clamping assembly includes a servo motor, the servo motor is fixed on the back side of the inner cavity of the frame, and the output shaft of the servo motor is fixedly connected to a driving bevel gear, a first driven bevel gear is arranged below the driving bevel gear away from the servo motor, and a first electric push rod is fixedly connected to the bottom of the first driven bevel gear, the outer wall of the first electric push rod is fixedly connected to a first screw rod, and the surface wall of the first screw rod is threadedly connected to a first screw rod sleeve, the outer wall of the first screw rod sleeve is fixedly connected to a lifting seat, and the lifting seat is hinged with connecting arms all around, and the other end of the connecting arm is hinged to a clamping frame used in conjunction with the base.

[0010] Preferably, the lifting assembly includes a second driven bevel gear, the second driven bevel gear is arranged above the driving bevel gear away from the servo motor, and the top of the second driven bevel gear is fixedly connected to a second electric push rod, the outer wall of the second electric push rod is fixedly connected to a second screw rod, and the surface wall of the second screw rod is threadedly connected to a second screw rod sleeve, the second screw rod sleeve is fixedly connected to a support that slides with the frame on all sides, and the bottom of the support is fixedly connected to a bucket, and the bottom of the bucket is fixedly connected to a test seat that is used in conjunction with the clamping frame.

[0011] Preferably, the counterweight assembly includes a water tower, which is fixed to the top of the frame by a fixing part, and the water outlet of the water tower is connected to a water distribution pipe rack, the water distribution pipe rack is connected to water adding telescopic pipes used in conjunction with a water bucket on all four sides, and a first metering valve is provided at one end of the water adding telescopic pipe close to the water distribution pipe rack, the water outlet of the water bucket is connected to a water reducing telescopic pipe, and a second metering valve is provided at one end of the water reducing telescopic pipe close to the water bucket, and water storage buckets connected and coordinated with the water reducing telescopic pipe are embedded in the four corners of the machine base close to the frame.

[0012] Preferably, the clamping frame is provided with T-shaped grooves on both sides close to the machine base, and the inner cavity of the T-shaped groove is slidably connected with a T-shaped slider, the inner side of the T-shaped slider is fixedly connected with an arc-shaped elastic sheet, and the lifting seat is slidably connected with a light rod fixedly matched with the machine base all around.

[0013] Preferably, a stop plate is fixedly connected to the inner side of the arc-shaped elastic sheet, and placement grooves for use with the stop plate are provided around the base.

[0014] Preferably, the base is provided with limiting holes on both sides close to the placement slot, and limiting rods that are slidably matched with the limiting holes are fixedly connected to both sides of the clamping frame.

[0015] Preferably, a liquid level sensor is embedded on the top of one side of the water bucket, an observation window is embedded on the outer side of the water bucket, and a pressure sensor is embedded on the bottom of the test seat.

[0016] Preferably, T-shaped slide rails are vertically provided at the bottom of the four sides of the frame, and the inner cavity of the T-shaped slide rail is slidably connected to a T-shaped slide bracket fixedly matched with the test seat.

[0017] Preferably, both sides of the top of the water tower are connected with exhaust heads, and a one-way valve is provided at one end of the water-reducing telescopic pipe close to the water storage barrel.

[0018] The beneficial effect of the present application is that when a pressure test is performed on a part, several groups of parts are randomly selected from a batch of parts and placed on the placement slot, and the servo motor of the clamping assembly provides a driving source, the first electric push rod plays a stroke adjustment role on the first driven bevel gear, and then the driving bevel gear drives the connecting arm and the clamping frame on the lifting seat to automatically expand or contract through the first screw rod and the first screw rod sleeve, so as to achieve a synchronous clamping and positioning effect for multiple groups of parts to prevent the parts from being displaced, and then the second electric push rod of the lifting assembly plays a stroke adjustment role on the second driven bevel gear, and then the second screw rod and the second screw rod sleeve perform adaptive lifting actions through the support, the bucket and the test seat to meet the pressure test requirements of several groups of parts, and at the same time, the water tower of the counterweight assembly provides a water source, and the water distribution pipe rack adds water and increases weight for four groups of water adding telescopic pipes and the first metering valve, and the four groups of water reducing telescopic pipes, the second metering valve and the water storage bucket are used to drain and reduce weight, so as to achieve the pressure increase and pressure reduction adjustment effect during the pressure test of multiple groups of parts, without the need to frequently convert the pressure test parameters according to the pressure thresholds of multiple parts, thereby improving the pressure test efficiency of multiple groups of parts.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a pressure testing machine for automobile parts quality inspection according to an embodiment of the present application;

[0022] Figure 2 is a partial cross-sectional view of the three-dimensional structure of a pressure testing machine for automobile parts quality inspection according to an embodiment of the present application;

[0023] Figure 3 It is a partial internal view of the three-dimensional structure of a pressure testing machine for automobile parts quality inspection according to an embodiment of the present application;

[0024] Figure 4 is a front view of the clamping assembly structure according to an embodiment of the present application;

[0025] Figure 5 is a partial side exploded view of the clamping assembly structure according to an embodiment of the present application;

[0026] Figure 6 is a bottom cross-sectional view of a clamping assembly structure according to an embodiment of the present application;

[0027] Figure 7 is a side view of the structure of a lifting assembly and a counterweight assembly according to an embodiment of the present application;

[0028] Figure 8 is a partial side view of the lifting assembly structure according to an embodiment of the present application;

[0029] Fig. 9 is a side cross-sectional view of a lifting assembly structure according to an embodiment of the present application;

[0030] Fig.10 is a side view of the sealing frame and circulation assembly structure according to an embodiment of the present application;

[0031] Fig.11 is a partial side cross-sectional view of the sealing frame and circulation assembly structure according to an embodiment of the present application;

[0032] Fig.12 It is a bottom view of the frame and base structure according to an embodiment of the present application.

[0033] Icons: 1. Rack; 2. Base; 3. Clamping assembly; 31. Servo motor; 32. Driving bevel gear; 33. First driven bevel gear; 34. First electric push rod; 35. First screw rod; 36. First screw rod sleeve; 37. Lifting seat; 38. Connecting arm; 39. Clamping frame; 4. Lifting assembly; 41. Second driven bevel gear; 42. Second electric push rod; 43. Second screw rod; 44. Second screw rod sleeve; 45. Support; 46. Bucket; 47. Test seat; 5. Counterweight assembly; 51. Water tower; 52. Water distribution pipe rack; 53. Water adding telescopic pipe; 54. First metering valve; 55, water reduction telescopic tube; 56, second metering valve; 57, water storage barrel; 6, sealing frame; 7, circulation assembly; 71, third driven bevel gear; 72, cam; 73, lifting rod; 74, piston; 75, reset spring; 76, boost pipe; 77, return pipe; 8, T-type slide groove; 9, T-type slider; 10, arc-shaped elastic sheet; 11, stop plate; 12, placement groove; 13, limit hole; 14, limit rod; 15, liquid level sensor; 16, pressure sensor; 17, T-type slide rail; 18, T-type slide; 19, exhaust head; 20, one-way valve; 21, bare rod. Implementation

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] like Figure 1-Figure 12 As shown, a pressure testing machine for automobile parts quality inspection according to an embodiment of the present application includes: a frame 1, a base 2 is fixedly connected to the bottom of the frame 1, and the cross-sectional area of ​​the base 2 is larger than the cross-sectional area of ​​the frame 1;

[0042] The base 2 is surrounded by clamping assemblies 3, which are mainly used for clamping and positioning four groups of parts. This improves the efficiency of synchronous pressure measurement of multiple groups of parts and prevents displacement of parts during pressure measurement.

[0043] Lifting assemblies 4 and counterweight assemblies 5 are respectively arranged around the frame 1, and pressure measurement operations are performed synchronously on four groups of parts by using a pressure increase and pressure decrease method, thereby further improving the pressure measurement efficiency of the parts.

[0044] like Figure 4 Zhihe Fig. 9 As shown, for the current pressure testing equipment, most of them can only perform pressure testing on one group of parts at a time, and the pressure threshold of each group of parts is different. It is necessary to frequently adjust the pressure value of the pressure testing equipment, which is troublesome. It is not possible to perform efficient pressure testing operations on multiple groups of parts by using the pressure increase and pressure decrease method based on multi-directional automatic positioning, and the efficiency is low. The clamping assembly 3 includes a servo motor 31, which is fixed on the back of the inner cavity of the frame 1, and the servo motor 31 provides a forward and reverse driving source;

[0045] The output shaft of the servo motor 31 is fixedly connected to a driving bevel gear 32, a first driven bevel gear 33 is arranged below the driving bevel gear 32 away from the servo motor 31, and a first electric push rod 34 is fixedly connected to the bottom of the first driven bevel gear 33, the outer wall of the first electric push rod 34 is fixedly connected to a first screw rod 35, and the surface wall of the first screw rod 35 is threadedly connected to a first screw rod sleeve 36, the outer wall of the first screw rod sleeve 36 is fixedly connected to a lifting seat 37, and the lifting seat 37 is hinged with connecting arms 38 on all sides, and the other end of the connecting arm 38 is hinged with a clamping frame 39 used in conjunction with the machine base 2, the first electric push rod 34 first adjusts the stroke of the first driven bevel gear 33, and then the driving bevel gear 32 drives the connecting arm 38 and the clamping frame 39 on the lifting seat 37 through the first screw rod 35 and the first screw rod sleeve 36 to automatically expand or contract and adjust, so as to achieve a synchronous clamping and positioning effect for multiple groups of parts to prevent the parts from being displaced;

[0046] The clamping frame 39 is provided with T-shaped grooves 8 on both sides close to the machine base 2, and the inner cavity of the T-shaped groove 8 is slidably connected with a T-shaped slider 9, and the inner side of the T-shaped slider 9 is fixedly connected with an arc-shaped elastic sheet 10, which provides sliding limit compensation for the arc-shaped elastic sheet 10 and also provides support for the shape change of the arc-shaped elastic sheet 10, so as to meet the clamping and positioning requirements of parts of different sizes. The lifting seat 37 is slidably connected with a light rod 21 fixedly matched with the machine base 2 around it, which provides sliding support compensation for the lifting seat 37 in the lifting state, so as to improve the lifting stability of the lifting seat 37;

[0047] A stop plate 11 is fixedly connected to the inner side of the arc-shaped elastic sheet 10, and placement grooves 12 used in conjunction with the stop plate 11 are provided on all four sides of the machine base 2 to stop and clamp parts of different sizes in the four groups of placement grooves 12, thereby playing a role in clamping and positioning, and facilitating the subsequent pressure measurement of parts of different sizes. Limiting holes 13 are provided on both sides of the machine base 2 close to the placement grooves 12, and limiting rods 14 slidably matched with the limiting holes 13 are fixedly connected to both sides of the clamping frame 39, providing sliding support compensation for the horizontally displaced clamping frame 39, thereby improving the horizontal displacement stability of the clamping frame 39.

[0048] The lifting assembly 4 includes a second driven bevel gear 41, which is arranged above the driving bevel gear 32 away from the servo motor 31, and a second electric push rod 42 is fixedly connected to the top of the second driven bevel gear 41, a second screw rod 43 is fixedly connected to the outer wall of the second electric push rod 42, and a second screw rod sleeve 44 is threadedly connected to the surface wall of the second screw rod 43, and the second screw rod sleeve 44 is fixedly connected to a support 45 that is slidably matched with the frame 1 on all sides, and a water bucket 46 is fixedly connected to the bottom of the support 45, and a test seat 47 used in conjunction with the clamping frame 39 is fixedly connected to the bottom of the water bucket 46, and then the second electric push rod 42 plays a stroke adjustment role on the second driven bevel gear 41, and then the second screw rod 43 and the second screw rod sleeve 44 perform adaptive lifting actions through the support 45, the water bucket 46 and the test seat 47 to meet the pressure testing requirements of several groups of parts;

[0049] A liquid level sensor 15 is embedded on the top of one side of the water bucket 46 to detect the liquid level of the water in the water bucket 46 to prevent the water in the water bucket 46 from being too full, and an observation window is embedded on the outside of the water bucket 46 to facilitate observing the change of the water volume inside the water bucket 46 from the outside. A pressure sensor 16 is embedded on the bottom of the test seat 47 to detect the pressure on the parts under the test seat 47 to prevent the parts from being under-pressured or over-pressurized, thereby ensuring the pressure measurement of the parts and preventing the parts from being damaged due to over-pressure.

[0050] T-shaped slide rails 17 are vertically provided at the bottom of the frame 1, and the inner cavity of the T-shaped slide rails 17 is slidably connected to a T-shaped slide bracket 18 fixedly matched with the test seat 47, providing sliding limit compensation for the test seat 47 to avoid shaking and deviation during the lifting and lowering of the test seat 47.

[0051] The counterweight assembly 5 includes a water tower 51, which is fixed to the top of the frame 1 by a fixing member. The water tower 51 provides water, and the water outlet of the water tower 51 is connected to a water distribution pipe rack 52. The water distribution pipe rack 52 is connected to water-adding telescopic pipes 53 used in conjunction with the water bucket 46 on all sides, and a first metering valve 54 is provided at one end of the water-adding telescopic pipe 53 close to the water distribution pipe rack 52. The water distribution pipe rack 52 performs precise water-adding and weight-increasing processing on the four groups of water-adding telescopic pipes 53 and the first metering valve 54;

[0052] The water outlet of the water bucket 46 is connected to a water reduction telescopic tube 55, and a second metering valve 56 is provided at one end of the water reduction telescopic tube 55 close to the water bucket 46. Water storage barrels 57 connected and matched with the water reduction telescopic tube 55 are embedded at the four corners of the machine base 2 close to the frame 1. Then, four groups of water reduction telescopic tubes 55, the second metering valve 56 and the water storage barrels 57 are used to perform precise drainage and weight reduction processing, so as to achieve the pressure increase and pressure decrease adjustment effect in the process of pressure testing of multiple groups of parts, without the need to frequently convert the pressure test parameters according to the pressure thresholds of multiple parts, thereby improving the pressure testing efficiency of multiple groups of parts;

[0053] Both sides of the top of the water tower 51 are connected to exhaust heads 19 to exhaust the pressurized gas entering the water tower 51 to prevent dangerous accidents caused by excessive pressure in the water tower 51. A one-way valve 20 is provided at one end of the water-reducing telescopic pipe 55 close to the water storage barrel 57 to control the water-reducing telescopic pipe 55 in one direction to prevent the water in the water storage barrel 57 from flowing into the water-reducing telescopic pipe 55 when it flows back.

[0054] like Fig.10 and Fig.11 As shown, during the pressure test of the parts, the water circulation pressure reduction method cannot be used to adjust the downward pressure of the parts in a targeted manner, and the pressure parameters need to be frequently converted, and even the pressure measuring equipment needs to be replaced, which is costly. The bottoms of both sides of the inner cavity of the frame 1 are fixedly connected with sealing frames 6, and a circulation component 7 is arranged in the sealing frame 6, which provides protection compensation for the circulation component 7 and also provides temporary storage space support for the pressurized gas generated by the circulation component 7;

[0055] The circulation assembly 7 includes a third driven bevel gear 71. Two sets of the third driven bevel gears 71 are meshed on both sides of the driving bevel gear 32. The inner cavity of the third driven bevel gear 71 is fixedly connected with a cam 72 through a fixing rod. The driving bevel gear 32 drives the cams 72 on the two sets of the third driven bevel gears 71 to rotate.

[0056] The surfaces of the two sets of cams 72 are slidably connected with lifting rods 73, and the bottoms of the lifting rods 73 are fixedly connected with pistons 74 that slide with the sealing frame 6. The outer surfaces of the two sets of lifting rods 73 are sleeved with return springs 75. The two sets of cams 72 drive the pistons 74 on the two sets of lifting rods 73 to reciprocate in the two sets of sealing frames 6 and generate pressurized gas.

[0057] Both sides of the sealing frame 6 are connected with a booster pipe 76 used in conjunction with the water barrel 57 to pressurize the water barrel 57 so that the pressure in the water barrel 57 continues to increase. The inner cavity of the water barrel 57 is connected with a reflux pipe 77 used in conjunction with the water tower 51. As the pressure in the water barrel 57 increases, the water discharged from the water barrel 57 is forced to be supplied to the water tower 51 through the reflux pipe 77 under the action of pressure, thereby achieving the recycling effect of the pressurized water and saving water resources.

[0058] Specifically, the working principle of the pressure testing machine for automobile parts quality inspection is as follows: when the parts are pressure tested, four groups of parts are randomly selected from a batch of parts and placed in the placement slot 12 in sequence, the first electric push rod 34 is controlled to open and drive the first driven bevel gear 33 to move up to the meshing part of the driving bevel gear 32, and then the servo motor 31 is controlled to drive the driving bevel gear 32 to rotate. At this time, the second electric push rod 42 is not opened and the second driven bevel gear 41 thereon is disengaged from the driving bevel gear 32 and is in a non-working state. The driving bevel gear 32 drives the first screw rod 35 to rotate accordingly through the first driven bevel gear 33 after it is in place, and the first screw rod 35 drives the lifting seat 37 to move upward through the first screw rod sleeve 36, and the lifting seat 37 drives the four groups of connecting arms 38 to move upward, and the four groups of connecting arms 38 drive the four groups of clamping frames 39 to move synchronously toward the direction of the machine base 2, and the four groups of clamping frames 39 drive the four groups of arc-shaped elastic sheets 10 to move synchronously toward the direction of the parts placed on the four groups of placement slots 12;

[0059] The four groups of clamping frames 39 drive the four groups of limiting rods 14 to slide inward in the four groups of limiting holes 13, and the four groups of placing grooves 12 provide limiting support for the four groups of parts. The four groups of arc-shaped elastic sheets 10 drive the four groups of stop plates 11 to press the four groups of parts. The four groups of parts also generate reverse limiting forces on the four groups of stop plates 11. The four groups of arc-shaped elastic sheets 10 are forced to drive the four groups of T-shaped slide blocks 9 to expand outward synchronously in the four groups of T-shaped slide grooves 8 and become flat. Then, the four groups of flat arc-shaped elastic sheets 10 carrying reaction forces clamp and position the other side of the four groups of parts through the four groups of stop plates 11, and then control the first electric push rod 34 to close and drive the first driven bevel gear 33 to disengage from the driving bevel gear 32 to the initial position.

[0060] After the four groups of parts are clamped and positioned, the second electric push rod 42 is first controlled to open and drive the second driven bevel gear 41 to move down to the meshing portion of the driving bevel gear 32, and then the servo motor 31 is controlled to open and drive the driving bevel gear 32 to rotate. At this time, the first electric push rod 34 is not opened and the first driven bevel gear 33 thereon is disengaged from the driving bevel gear 32 and is in a non-working state. The driving bevel gear 32 drives the second screw rod 43 to rotate accordingly through the first driven bevel gear 33 in place. The frame 18 provides sliding limit compensation for the four groups of test seats 47, and the second screw rod 43 drives the water bucket 46 and the test seat 47 on the four groups of supports 45 to move downward to the predetermined pressure measuring position of the four groups of parts through the second screw rod sleeve 44. At this time, the four groups of water buckets 46 are in an empty bucket state, and the pressure sensor 16 on the four groups of test seats 47 detects the current pressure value of the four groups of parts, and then controls the second electric push rod 42 to close and drive the second driven bevel gear 41 to disengage from the driving bevel gear 32 to the initial position;

[0061] Then, according to the pressure threshold of the parts, if the pressure value of the current four groups of parts is low and the four groups of water buckets 46 need to be added with water to increase the pressure, first open the first metering valve 54 on the four groups of water-adding telescopic pipes 53. According to the siphon principle, the water in the water tower 51 located at a high place flows into the four groups of water buckets 46 through the water distribution pipe rack 52 and the four groups of water-adding telescopic pipes 53, and the four groups of first metering valves 54 measure and detect the increased water volume entering the four groups of water buckets 46. Then, the four groups of water buckets 46 after adding water increase the weight of the four groups of test seats 47 until the weight of the four groups of test seats 47 reaches the current pressure threshold of the four groups of parts, thereby achieving the pressure measurement effect of the four groups of parts.

[0062] If the pressure value of the current four groups of parts is high and the four groups of water buckets 46 need to be drained and decompressed, first open the second metering valve 56 on the four groups of water reduction telescopic pipes 55. Similarly, according to the siphon principle, the overweight water in the four groups of water buckets 46 located at a high position flows into the four groups of water storage barrels 57 through the four groups of water reduction telescopic pipes 55. When the four groups of water buckets 46 are adding or reducing water, the four groups of liquid level sensors 15 detect the water level in the four groups of water buckets 46, and the four groups of second metering valves 56 measure and detect the amount of water reduction and drainage entering the four groups of water storage barrels 57. Then, the four groups of water buckets 46 after drainage reduce the load on the four groups of test seats 47 until the weight of the four groups of test seats 47 reaches the current pressure threshold of the four groups of parts, thereby achieving the pressure measurement effect of the four groups of parts.

[0063] After the pressure measurement of the four groups of parts is completed, the pressurized water in the four groups of water buckets 46 is first controlled to flow into the four groups of water storage buckets 57 through the four groups of water-reducing telescopic tubes 55, so that the four groups of water buckets 46 return to the initial empty barrel state. Conversely, the four groups of test seats 47 on the four groups of water buckets 46 that have returned to the empty barrel state and the stop plates 11 on the four groups of clamping frames 39 are successively controlled to disengage from the four groups of parts, and the four groups of parts after the pressure measurement are removed in turn, and then the servo motor 31 is controlled to start and drive the driving bevel gear 32 to rotate. At this time, the meshing parts of the first driven bevel gear 33 and the second driven bevel gear 41 that are disengaged from the driving bevel gear 32 are both in a non-working state, and the driving bevel gear 32 drives the cams 72 on the two groups of third driven bevel gears 71 to rotate accordingly, and the two groups of reset springs 75 are used to return the two groups of The pistons 74 on the two lifting rods 73 provide elastic buffering and reset compensation. The two cams 72 drive the pistons 74 on the two lifting rods 73 to perform reciprocating work in the two sealing frames 6 and generate pressurized gas. The pressurized gas in the two sealing frames 6 is supplied to the four water storage barrels 57 through the four booster pipes 76, and the four water storage barrels 57 are continuously pressurized and the internal space pressure is increased. Then the one-way valves 20 on the four water reduction telescopic pipes 55 are controlled to open. The increased pressure forces the reduced and drained water in the four water storage barrels 57 to be re-supplied into the water tower 51 through the four return pipes 77, and the pressurized gas entering the water tower 51 along with the reduced and drained water is discharged by the two exhaust heads 19, thereby realizing the recycling effect of the pressurized and depressurized water, and preparing for the pressure measurement work of the next group of parts.

[0064] It should be noted that the specific models and specifications of the servo motor 31, the first electric push rod 34 and the second electric push rod 42 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0065] The power supply and principle of the servo motor 31 , the first electric push rod 34 and the second electric push rod 42 are clear to those skilled in the art and will not be described in detail herein.

[0066] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0067] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pressure testing machine for automobile parts quality inspection, characterized in that: include: A frame (1), wherein the bottom of the frame (1) is fixedly connected to a base (2); The base (2) is provided with a clamping assembly (3) on all sides thereof, the clamping assembly (3) comprising a servo motor (31), the servo motor (31) being fixed to the back side of the inner cavity of the frame (1), and the output shaft of the servo motor (31) being fixedly connected to a driving bevel gear (32), a first driven bevel gear (33) being provided below the driving bevel gear (32) away from the servo motor (31), and a first electric push rod (34) being fixedly connected to the bottom of the first driven bevel gear (33), a first screw rod (35) being fixedly connected to the outer wall of the first electric push rod (34), and a first screw rod sleeve (36) being threadedly connected to the surface wall of the first screw rod (35), a lifting seat (37) being fixedly connected to the outer wall of the first screw rod sleeve (36), and a connecting arm (38) being hingedly connected to all sides of the lifting seat (37), and the other end of the connecting arm (38) being hingedly connected to a clamping frame (39) used in conjunction with the base (2); The frame (1) is provided with lifting assemblies (4) and counterweight assemblies (5) on all sides thereof, the lifting assemblies (4) comprising a second driven bevel gear (41), the second driven bevel gear (41) being provided above the driving bevel gear (32) away from the servo motor (31), and the top of the second driven bevel gear (41) is fixedly connected to a second electric push rod (42), the outer wall of the second electric push rod (42) is fixedly connected to a second screw rod (43), and the surface wall of the second screw rod (43) is threadedly connected to a second screw rod sleeve (44), the second screw rod sleeve (44) is fixedly connected to a support (45) slidably matched with the frame (1) on all sides thereof, and the bottom of the support (45) is fixedly connected to a water bucket (46), and the bottom of the water bucket (46) is fixedly connected to a clamping frame. (39) A test seat (47) for use with the machine frame (1), the counterweight assembly (5) comprising a water tower (51), the water tower (51) being fixed to the top of the machine frame (1) by a fixing member, and the water outlet of the water tower (51) being connected to a water distribution pipe rack (52), the four sides of the water distribution pipe rack (52) being connected to a water supply telescopic pipe (53) for use with a water bucket (46), and a first metering valve (54) being provided at one end of the water supply telescopic pipe (53) close to the water distribution pipe rack (52), the water outlet of the water bucket (46) being connected to a water reduction telescopic pipe (55), and a second metering valve (56) being provided at one end of the water reduction telescopic pipe (55) close to the water bucket (46), and water storage buckets (57) being connected to and matched with the water reduction telescopic pipe (55) being embedded at the four corners of the machine frame (2) close to the machine frame (1).

2. A pressure testing machine for automobile parts quality inspection according to claim 1, characterized in that: The clamping frame (39) is provided with T-shaped grooves (8) on both sides close to the machine base (2), and the inner cavity of the T-shaped groove (8) is slidably connected to a T-shaped slider (9), and the inner side of the T-shaped slider (9) is fixedly connected to an arc-shaped elastic sheet (10).

3. A pressure testing machine for automobile parts quality inspection according to claim 2, characterized in that: A stop plate (11) is fixedly connected to the inner side of the arc-shaped elastic sheet (10), and placement grooves (12) for use with the stop plate (11) are provided around the machine base (2).

4. A pressure testing machine for automobile parts quality inspection according to claim 3, characterized in that: The base (2) is provided with limit holes (13) on both sides close to the placement groove (12), and the clamping frame (39) is fixedly connected with limit rods (14) that are slidably matched with the limit holes (13) on both sides.

5. A pressure testing machine for automobile parts quality inspection according to claim 4, characterized in that: A liquid level sensor (15) is embedded in the top of one side of the water bucket (46), and an observation window is embedded in the outer side of the water bucket (46); a pressure sensor (16) is embedded in the bottom of the test seat (47).

6. A pressure testing machine for automobile parts quality inspection according to claim 5, characterized in that: The bottom of the frame (1) is vertically provided with T-shaped slide rails (17), and the inner cavity of the T-shaped slide rails (17) is slidably connected to a T-shaped slide bracket (18) fixedly matched with the test seat (47).

7. A pressure testing machine for automobile parts quality inspection according to claim 6, characterized in that: Both sides of the top of the water tower (51) are connected to exhaust heads (19), and a one-way valve (20) is provided at one end of the water-reducing telescopic pipe (55) close to the water storage barrel (57).

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