Clamping device for sealing test of pressure switch

Abstract

A pressure switch sealing test clamping device comprises a base, a driving device arranged on the base, and a connecting rod connected with the driving device. A supporting seat is arranged on the base, a supporting groove allowing the connecting rod to penetrate through is formed in the supporting seat, and the driving device is connected with the connecting rod through a driving shaft extending out of the supporting seat and drives the connecting rod to move; a supporting check block is arranged in the supporting groove, a testing groove is formed in the connecting rod in the moving direction of the connecting rod, and the supporting check block extends into the testing groove to limit movement of the connecting rod; one end of the connecting rod is connected with the driving shaft, the other end of the connecting rod is provided with a clamping groove, a limiting block is arranged between the testing groove and the clamping groove in the hollow interior of the connecting rod, and the limiting block abuts against the testing end of the pressure switch to clamp the testing end of the pressure switch in the clamping groove. According to the utility model, the connecting rod is driven by the driving device to move relative to the limiting block, so that the device to be detected is automatically clamped and loosened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sealed detection field, especially relate to a pressure switch sealing test clamping device. BACKGROUND

[0002] Pressure switch as a kind of common pressure control element, has wide application in numerous industry and civil field. Its working principle is through inductive pressure variation, when pressure reaches preset value, internal mechanical structure action, triggers electric signal output, to realize the control and protection of pressure related system. For example in hydraulic system, pressure switch can prevent system pressure from being too high and causing safety accident;In gas pressure equipment, can accurately control gas pressure, ensure that equipment stable operation.

[0003] In air conditioning system, air conditioning pressure switch plays a vital role. It is mainly used for monitoring the pressure condition of refrigerant in air conditioning system, when system pressure appears abnormal, such as too high or too low, air conditioning pressure switch will act in time, and feedback signal to air conditioning control system. Control system adjusts compressor speed, fan speed etc. according to the signal, to ensure that air conditioning system runs safely and efficiently. For example, in high temperature environment in summer, air conditioning refrigeration load increases, and the pressure of refrigerant in the system rises, if the pressure exceeds the normal range, the pressure switch will intervene in time to prevent the compressor from being damaged due to overload.

[0004] For pressure switch, sealing is one of its key performance indicators. Once the sealing of pressure switch is poor, it will cause internal pressure leakage, so that pressure switch cannot accurately perceive the real pressure, and then cause false control signal. This not only affects the normal operation of related equipment, but also may cause equipment failure, and even cause safety hazards. For example, if the sealing of air conditioning pressure switch is poor, it may cause poor air conditioning system refrigeration or heating effect, increased energy consumption, and even damage to compressor and other core components, shorten the service life of air conditioner.

[0005] At present, there are many problems in the detection equipment for the sealing of pressure switch. In actual production detection process, manual test method is often used. Workers need to connect the test end of air conditioning pressure switch to the detection equipment through threaded structure one by one. This way not only is cumbersome to operate, but also the number of switches that can be detected at the same time is extremely limited. At the same time, manual operation cannot realize automatic detection process, resulting in very low detection efficiency, which is difficult to meet the efficient detection needs of large-scale production. In the face of rising labor costs and increasing production efficiency requirements, it is of urgent practical significance to develop a pressure switch sealing test clamping device that can overcome the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a pressure switch sealing test clamping device to solve the technical problem of pressure switch sealing detection automation.

[0007] To realize above-mentioned purpose, a kind of pressure switch sealing test clamping device of the utility model specific technical solutions as follows:

[0008] A kind of pressure switch sealing test clamping device includes base, driving device being arranged on the base, and connecting rod being connected with the driving device;

[0009] The base is provided with support seat that protrudes upward, the support seat is provided with support slot for the connecting rod to pass through, the driving device is connected with the connecting rod by driving shaft that protrudes from the support seat, and the movement of the connecting rod relative to the support seat is realized by the extension of the driving shaft being driven;

[0010] Supporting block is arranged in the support slot, the connecting rod is provided with test slot along the movement direction of the connecting rod, and the supporting block is inserted into the test slot to limit the movement of the connecting rod;

[0011] One end of the connecting rod is connected with the driving shaft, and the other end is provided with clamping slot, the clamping slot is used to place the test end of pressure switch to be detected, the connecting rod is hollow, and limit block is arranged between the test slot and the clamping slot in the hollow interior of the connecting rod, when the connecting rod moves, the limit block moves to the clamping slot under the action of the supporting block and abuts against the test end of pressure switch to realize the clamping of the test end of pressure switch in the clamping slot.

[0012] As a further improvement of the utility model, the limit block is connected with the supporting block.

[0013] As a further improvement of the utility model, the clamping slot is opened at the upper portion of the connecting rod, the clamping slot is matched with the shape of the test end of pressure switch, and the test end of pressure switch is placed into the clamping slot from top to bottom.

[0014] As a further improvement of the utility model, the test end of pressure switch is provided with protruding part, the clamping slot is provided with clamping limit slot corresponding to the protruding part, and the clamping limit slot cooperates with the limit block to clamp the test end of pressure switch.

[0015] As a further improvement of the utility model, the connecting rod moves along the limit block under the driving of the driving shaft.

[0016] As a further improvement of the utility model, the limiting block is provided with a test hole penetrating along the moving direction of the connecting rod, the test hole is communicated with the test groove and the clamping groove, when the limiting block abuts against the test end of the pressure switch, the test hole is connected with the test end of the pressure switch.

[0017] As a further improvement of the utility model, the test groove is opened on the side of the connecting rod, and the sealing test pipe enters the test groove from the side opening and is connected with the test hole.

[0018] As a further improvement of the utility model, the limiting block is matched with the hollow interior shape of the connecting rod, and the movement of the connecting rod relative to the limiting block realizes the clamping and loosening of the test end of the pressure switch.

[0019] Beneficial effects:

[0020] The pressure switch sealing test clamping device is provided with a base, the supporting seat on the base provides a stable supporting structure for the whole device. The driving device is connected with the connecting rod through the driving shaft, and this structure design enables the driving device to accurately and stably control the movement of the connecting rod. When the driving shaft is telescoped, the connecting rod can be smoothly driven to move, thereby providing a reliable power basis for the subsequent clamping and detection operation of the test end of the pressure switch to be detected. Compared with some loose clamping devices, the overall stability and reliability are greatly improved. The supporting groove on the supporting seat and the supporting block in the groove are matched with the test groove of the connecting rod, and the movement of the connecting rod is limited by the supporting block extending into the test groove, and this design realizes the accurate limiting of the movement stroke of the connecting rod. In actual operation, the damage of the equipment or the detection error caused by excessive movement of the connecting rod can be effectively avoided, the safety of the operator is guaranteed, and the controllability of the whole detection process is improved.

[0021] The clamping groove arranged at one end of the connecting rod is used for placing the test end of the pressure switch to be detected, and the limiting block arranged in the hollow interior of the connecting rod abuts against the test end of the pressure switch to realize clamping. This clamping method is simple and direct, and does not need complex manual operation, thereby saving labor cost and time cost. Moreover, when different pressure switches need to be replaced for detection, the operation is also very convenient, that is, the detected pressure switch is taken out, and a new pressure switch to be detected is placed, thereby greatly improving the detection efficiency.

[0022] The test hole arranged along the connecting rod is in communication with the test groove and the clamping groove, when the limiting block abuts against the test end of the pressure switch, the test hole is connected with the test end of the pressure switch, and the test groove is opened on the side of the connecting rod, and the sealing test tube can be connected with the test hole from the side opening. This design optimizes the process of sealing test, so that the detection medium can more smoothly enter the test end of the pressure switch for sealing detection, reduces the detection error caused by poor connection or medium leakage, thereby improving the accuracy of the detection result, and provides a powerful guarantee for the quality control of the pressure switch.

[0023] By driving the movement of the connecting rod by the driving device, the clamping and loosening of the test end of the pressure switch can be automatically realized. In the actual production detection scene, the operator only needs to place the pressure switch to be detected in the clamping groove, and start the driving device, which can accurately control the extension and contraction of the driving shaft according to the preset program, drive the connecting rod to complete the clamping action, and automatically loosen after the detection is completed. This automatic operation greatly reduces manual intervention, not only significantly improves the detection efficiency and can complete more pressure switch detection tasks in unit time, but also avoids the problem of inconsistent clamping force caused by manual operation difference, ensures the stable clamping state of the test end of the pressure switch in each detection process, and further improves the consistency and reliability of the detection result, which effectively promotes the development of pressure switch sealing detection work towards high efficiency and precision. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure schematic view of a pressure switch sealing test clamping device of the utility model;

[0025] Figure 2 It is a structure schematic view of a connecting rod and a support seat;

[0026] Figure 3 It is a structure schematic view of a connecting rod;

[0027] Figure 4 It is a top view of a connecting rod;

[0028] Figure 5 It is a structure schematic view of a support seat;

[0029] Mark explanation in the drawing: 1, base; 11, support seat; 111, support groove; 112, support block; 2, driving device; 21, driving shaft; 3, connecting rod; 31, clamping groove; 311, clamping limiting groove; 32, test groove; 33, limiting block; 331, test hole; 4, test end of pressure switch; 41, protruding part. DETAILED DESCRIPTION

[0030] In order to deepen the understanding of the utility model, the utility model will be further described in combination with embodiments and drawings below, and the embodiments are only used to explain the utility model and do not constitute the limitation on the protection scope of the utility model.

[0031] Implementation example:

[0032] As Figure 1 The pressure switch is placed in water after the pressure switch test end 4 is clamped, a certain pressure gas is filled into the pressure switch, and the sealing property of the pressure switch is judged by observation. It comprises a base 1, a driving device 2, and a connecting rod 3 connected with the clamped pressure switch test end. The base 1 provides a stable support plane for the whole device, bears the weight of the key components such as the support seat 11, the driving device 2 and the connecting rod 3, and maintains the structural stability of the whole device. The support seat 11 and the driving device 2 are fixed on the upper end face of the base 1 by bolts. The support seat 11 is a key support structure of the whole device, is stably installed on the base 1, and provides a solid bearing foundation for the connecting rod 3.

[0033] The driving device 2 is a cylinder structure in the embodiment, can efficiently convert the energy of compressed air into mechanical energy, provides strong and stable driving force for the movement of the connecting rod 3. When the pressure switch test end 4 needs to be clamped, the piston in the cylinder is quickly extended under the push of compressed air, drives the connecting rod 3 to move quickly, and applies sufficient clamping force. When the pressure switch test end 4 needs to be released after detection, the cylinder can accurately control the driving shaft 21 to retract, realize quick and stable action, and meet the demand of high-efficiency detection on power.

[0034] The support seat 11 is vertically protruded upward from the upper end face of the base 1, the middle pipe groove is provided with a support groove 111, and the connecting rod 3 passes through the support groove 111. The connecting rod 3 is a hollow tubular structure, one end is fixedly connected with the driving shaft 21 through bolts, and the other end is opened upward to form a clamping groove 31 for placing the pressure switch test end 4 to be detected. The side surface of the one end of the connecting rod 3 towards the driving device 2 is opened along the extension direction of the driving shaft 21 to form a test groove 32, the test groove 32 passes through the support block 112 and is connected with the driving shaft 21, and the test groove 32 moves back and forth along the support block 112, and the support block 112 limits the movement range of the connecting rod 3.

[0035] The hollow tubular interior of the connecting rod 3 is provided with a limiting block 33 between the clamping groove 31 and the supporting block 112. In this embodiment, the limiting block 33 is fixed on the supporting block 112 by cooperating with the internal threaded hole on the supporting block 112 through the external threaded structure. The limiting block 33 matches the tubular inner diameter of the connecting rod 3, and the connecting rod 3 moves along the limiting block 33 relative to the limiting block 33, and the limiting block 33 clamps and releases the pressure switch test end 4 in the clamping groove 31. The pressure switch test end is a hollow tubular structure connected with the pressure switch, one end of which is placed in the clamping groove 31, and the other end is connected with the pressure switch. The clamping groove 31 is expanded outwardly corresponding to the protruding part 41 of the pressure switch test end to form a clamping limiting groove 311. During the movement of the connecting rod 3, the limiting block 33 abuts against the test end in the clamping groove 31 to clamp the test end. The limiting block 33 is provided with a test hole 331 penetrating along the movement direction of the connecting rod 3. The test hole 331 communicates with the hollow interior of the pressure switch test end 4 in the clamping groove 31, and the other end of the test hole 331 communicates with the high-pressure gas delivery pipe in the test groove 32. The sealing test pipe is connected with the test hole 331 from the opening of the test groove 32 on the side of the connecting rod, and high-pressure gas is delivered to the pressure switch to detect its sealing performance.

[0036] In use, the drive shaft 21 of the control driving device 2 is extended, the connecting rod 3 moves outward relative to the support base 11, the limiting block 33 moves away from the clamping groove 31 in the connecting rod 3, the pressure switch test end 4 is placed into the clamping groove 31 from top to bottom, and the protruding part 41 enters the clamping limiting groove 311. The drive shaft 21 is retracted, the connecting rod 3 moves inward relative to the support base 11, the limiting block 33 moves to the clamping groove 31 in the connecting rod 3, and the limiting block 33 abuts against the pressure switch test end 4 to clamp the test end in the clamping groove 31. The clamping device is placed in water, high-pressure gas enters the pressure switch through the test hole, and the sealing performance detection is started. When the sealing performance detection is finished, the clamping device is taken out of the water, the drive shaft 21 is extended, the pressure switch is taken out, and then the next round of test is started.

[0037] The clamping device of the application realizes automatic operation by means of the driving device, moves the connecting rod by driving the shaft to extend and retract, quickly clamps and releases the test end of the pressure switch, changes the low-efficiency mode of manual connection test one by one in the past, and simultaneously realizes automatic operation of multiple pressure switch sealing property detection at the same time by setting multiple synchronous control clamping devices at one time, meets the large-scale production demand, and greatly reduces the manual connection operation amount by automatic operation, can significantly reduce the number of operating personnel in large-scale production detection, lets the personnel invest energy in more valuable work, and indirectly reduces the labor cost. The test end of the pressure switch can be directly placed into the upper opening clamping groove in shape matching from top to bottom without complex threaded connection. Meanwhile, the inner limiting block of the connecting rod and the upper support block of the support seat work cooperatively to automatically complete clamping and limiting, greatly simplifies the operation process. The shape matching clamping groove and the corresponding clamping limiting groove are tightly matched with the limiting block to stably clamp the test end and ensure stable test connection. The test hole is accurately connected with the test end, the test groove with a side opening is convenient for sealing test pipe connection, ensures stable pressure transmission, and reduces test error.

[0038] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A pressure switch seal test clamping device, characterized by, The utility model provides a pressure switch test device, including base, drive arrangement set up on the base and the connecting rod connected with drive arrangement, The base is provided with a support seat protruding upward, the support seat is provided with a support groove for the connecting rod to pass through, the drive arrangement is connected with the connecting rod through the drive shaft protruding from the support seat, and the movement of the connecting rod relative to the support seat is realized by driving the extension and retraction of the drive shaft, The support groove is provided with a support stopper, the connecting rod is provided with a test groove along the movement direction of the connecting rod, and the support stopper protrudes into the test groove to limit the movement of the connecting rod, One end of the connecting rod is connected with the drive shaft, the other end is provided with a clamping groove, the clamping groove is used for placing a test end of a pressure switch to be detected, the connecting rod is hollow, a limiting block is arranged in the hollow interior of the connecting rod between the test groove and the clamping groove, when the connecting rod moves, the limiting block moves to the clamping groove under the action of the support stopper and abuts against the test end of the pressure switch to realize the clamping of the test end of the pressure switch in the clamping groove.

2. The pressure switch seal test clamp apparatus of claim 1, wherein, The limiting block is connected with the support stopper.

3. The pressure switch seal test clamp apparatus of claim 1, wherein, The clamping groove is open at the upper part of the connecting rod, the clamping groove is matched with the shape of the test end of the pressure switch, and the test end of the pressure switch is placed into the clamping groove from top to bottom.

4. The pressure switch seal test clamp apparatus of claim 3, wherein, The test end of the pressure switch is provided with a protruding part, the clamping groove is provided with a clamping limiting groove corresponding to the protruding part, the clamping limiting groove cooperates with the limiting block to clamp the test end of the pressure switch.

5. The pressure switch seal test clamp apparatus of claim 2, wherein, The connecting rod moves along the limiting block under the drive of the drive shaft.

6. The pressure switch seal test clamp apparatus of claim 2, wherein, The limiting block is provided with a test hole penetrating along the movement direction of the connecting rod, the test hole is connected with the test groove and the clamping groove, and when the limiting block abuts against the test end of the pressure switch, the test hole is connected with the test end of the pressure switch.

7. The pressure switch seal test clamp apparatus of claim 6, wherein, The test groove is open at the side of the connecting rod, and a sealed test tube enters the test groove from the side opening and is connected with the test hole.

8. The pressure switch seal test clamp apparatus of claim 6, wherein, The limiting block is matched with the shape of the hollow interior of the connecting rod, and the movement of the connecting rod relative to the limiting block realizes the clamping and loosening of the test end of the pressure switch.

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