Spatial position degree detection device for evaporating pipe assembly of automobile air conditioning system

Abstract

The utility model relates to an automobile air-conditioning system evaporating pipe assembly space position degree detection device, which belongs to the automobile air-conditioning system evaporating pipe detection field and comprises a bottom plate, a positioning frame, a detection frame, a positioning seat, a pressing block, a pressing rod, a supply pipe detection rod and a return pipe detection rod. The positioning seat is provided with a supply pipe positioning pin and a return pipe positioning pin, the positioning frame is provided with a pressure applying mechanism connected with the pressing rod, the lower end of the pressing rod is connected with a pressing block correspondingly matched with the positioning seat, and the detection frame is provided with a detection guide block matched with the supply pipe detection rod and the return pipe detection rod in an inserted mode. According to the device, the spatial position degree parameter limiting standard of the automobile air conditioning system evaporation pipe assembly is integrated, a modeling detection system is established, the spatial position degree of the connecting end can be subjected to simulation qualitative detection, the detection method is simplified, the detection period is shortened, and the detection efficiency is improved. The detection cost is reduced and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile air-conditioning system evaporation pipe detection, in particular to an automobile air-conditioning system evaporation pipe assembly spatial position detection device. Background Art

[0002] The automobile air conditioning refrigeration system is mainly composed of compressor, condenser, dryer, pressure switch, expansion valve, evaporator, cooling fan and other components. The automobile air conditioning system evaporator tube is an important component of the evaporator. It is installed in the automobile air conditioning box and connected between the expansion valve and the condenser. Through heat exchange with the continuously circulating air in the car, the low-pressure refrigerant derived from the expansion valve absorbs heat and evaporates in the evaporator tube, thereby achieving the purpose of lowering the temperature in the car. The automobile air conditioning system evaporator tube is usually a three-dimensional serpentine curved shape, such as Figure 1 As shown, it includes a supply pipe 11 and a return pipe 12, which are connected by a seat block 13 to form an evaporation pipe assembly of an automobile air conditioning system. The seat block 13 is provided with a supply hole 14 and a return hole 15 for conducting the supply pipe 11 and the return pipe 12 respectively, and a stud 21 for connecting with the expansion valve. With the continuous improvement of automobile performance, in order to avoid the large internal stress after installation at both ends of the evaporation pipe due to large spatial position errors, shorten the service life of the evaporation pipe, reduce the operating reliability of the air conditioning system, or avoid the evaporation pipe bending node due to insufficient shape accuracy causing the pipe body to contact with other devices after installation, generate vibration and collision during operation, and increase the system working noise, it is necessary to strictly detect the spatial position and node bending of both ends of the evaporation pipe assembly of the automobile air conditioning system. At present, the spatial position of the evaporation pipe assembly of the automobile air conditioning system is detected step by step by using a three-coordinate measuring instrument. This detection method not only requires high professional ability of the detection personnel, but also has complicated steps, lengthy processes, and low efficiency, and cannot meet the industrial production needs of the evaporation pipe of the automobile air conditioning system. Therefore, it is necessary to research and develop a new type of automotive air-conditioning system evaporator pipe assembly spatial position detection device in a targeted manner to solve the existing technical problems. Utility Model Content

[0003] The purpose of the utility model is to provide a spatial position detection device for the evaporator pipe assembly of an automobile air-conditioning system, which adopts a modeled detection structure, simplifies the detection method, improves the detection efficiency, and meets the industrial production needs of the evaporator pipe of the automobile air-conditioning system.

[0004] A device for detecting the spatial position of an evaporator pipe assembly of an automobile air-conditioning system comprises: a base plate, a positioning frame, a detection frame, a positioning seat, a pressure block, a pressure rod, a supply pipe detection rod and a return pipe detection rod, wherein the base plate is a horizontally arranged working platform, and the positioning frame, the detection frame and the positioning seat are respectively fixedly mounted on the base plate corresponding to each other; the upper end of the positioning seat has a positioning plane, and a supply pipe positioning pin and a return pipe positioning pin are respectively arranged on the positioning plane, and the supply pipe positioning pin and the return pipe positioning pin respectively correspond to the supply hole and the return hole on the seat block in the evaporator pipe assembly. The positioning frame can also be used to form a matching position for the seat block; a pressure mechanism is connected and installed on the positioning frame, and the pressure mechanism can be controlled by electric, pneumatic or manual means; the pressure rod is guided by the positioning frame to maintain a dynamic vertical setting, connected to the pressure mechanism and can be controlled by the pressure mechanism to move up and down; the pressure block is fixedly connected to the lower end of the pressure rod, corresponding to the positioning seat up and down; when the pressure rod is fully moved down, the pressure block can form a pressing and clamping match with the positioning seat, and the seat block placed on the positioning seat is fixedly locked and positioned; a pressure mechanism is installed on the detection frame. A detection guide block is provided on the detection guide block, which can respectively cooperate with the insertion and axially guide the supply pipe detection rod and the return pipe detection rod. The opening axis direction of the guide hole is at an upward angle A with the horizontal line of the space. The supply pipe detection rod and the return pipe detection rod are respectively provided with a diameter-increasing limit shoulder to correspondingly limit the maximum insertion stroke of the supply pipe detection rod and the return pipe detection rod in the guide hole. At the same time, detection sleeves corresponding to the supply pipe and the return pipe are respectively provided at the front end, so that the supply pipe and the return pipe can be aligned with the detection sleeve. The end heads of the evaporator connection ends are respectively inserted into the detection sleeves on the supply pipe detection rod and the return pipe detection rod, and observation grooves are respectively provided on the detection sleeves, through which the spatial matching states between the supply pipe and the return pipe and the supply pipe detection rod and the return pipe detection rod can be qualitatively observed and judged; in the setting state where the supply pipe detection rod and the return pipe detection rod are fully inserted into the guide hole with the maximum stroke, the horizontal distance between the observation groove on the supply pipe detection rod and the central axis of the supply pipe positioning pin is X 1 The horizontal distance between the observation groove on the return pipe detection rod and the central axis of the return pipe positioning pin is X 2 The longitudinal horizontal distance between the center of the cross section of the supply pipe detection rod and the return pipe detection rod and the central axis of the supply pipe positioning pin is Y, and the height distance between the center of the cross section where the observation groove is opened on the supply pipe detection rod and the upper end surface of the positioning seat is H 2 The height distance between the center of the cross section where the observation groove on the return pipe detection rod is opened and the upper end surface of the positioning seat is H 1, where: distance parameter X 1 , X 2 , Y, H 1 and H 2 And the angle parameter A are all parameter limitation standards for the spatial position of the evaporator pipe assembly of the automobile air-conditioning system. Through the organic combination of the parameter limitation standards, a modeled detection structure for the spatial position of the evaporator pipe assembly of the automobile air-conditioning system is formed, and qualitative detection of the spatial position of the evaporator pipe assembly of the automobile air-conditioning system can be implemented.

[0005] The device for detecting the spatial position of the evaporator pipe assembly of the automobile air-conditioning system is preferably provided with a pressure block adjustment mechanism between the pressure rod and the pressure block, and the pressure block adjustment mechanism includes: an adjusting bolt and a connecting seat, the adjusting bolt is coaxially threadedly connected to the pressure rod, the connecting seat is fixedly connected to the upper end of the pressure block, and forms a hanging cooperation with the bolt cap of the inverted adjusting bolt, so that the pressure block and the pressure rod are connected to each other. When the pressure rod is not pressurized, the pressure block can be suspended on the adjusting bolt and lifted upward with the pressure rod. At this time, the exposed length of the adjusting bolt relative to the pressure rod can be adjusted by rotating the bolt cap of the adjusting bolt, and the corresponding matching spacing between the pressure block and the positioning seat can be set, and the pressing and clamping strength of the pressure block and the positioning seat on the seat block can be adjusted to ensure that on the basis of firmly clamping the seat block, excessive pressing and clamping strength can be prevented from causing damage to the seat block and affecting product quality.

[0006] The spatial position detection device of the evaporator pipe assembly of an automobile air-conditioning system is preferably provided with sliding bearings in the guide holes opened on the detection guide block, so as to reduce the friction resistance of the supply pipe detection rod and the return pipe detection rod moving relative to the detection guide block, improve the convenience of the detection operation, reduce the wear tendency, extend the service life of the supply pipe detection rod and the return pipe detection rod, and ensure the detection accuracy.

[0007] The utility model has the beneficial effect of providing a device for detecting the spatial position of an evaporator pipe assembly of an automobile air conditioning system, by detecting the distance parameter X 1 , X 2 , Y, H 1 , H 2By comprehensively integrating the spatial position parameter limitation standards of the evaporator pipe assembly of the automobile air-conditioning system, such as the angle parameter A, a modeled detection system is established to realize the simulated qualitative detection of the spatial position between the two connecting ends of the evaporator pipe assembly of the automobile air-conditioning system. There is no need to make restrictions on the professional ability of the detection personnel. It replaces the quantitative detection method using a three-coordinate measuring instrument in the existing technology. In actual production, it can simplify the detection method, shorten the detection cycle, reduce the detection cost, and improve the detection efficiency. It is suitable for promotion and application in the industrial production of evaporator pipes of automobile air-conditioning systems to meet the development needs of the automobile industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a three-dimensional diagram of the evaporator tube assembly.

[0009] Figure 2 This is the main diagram of the spatial position detection device for the evaporator pipe assembly of the automobile air-conditioning system.

[0010] Figure 3 for Figure 2 Partial cross-sectional view along line BB.

[0011] Figure 4 for Figure 2 A partial enlarged view of point Ⅰ in the middle.

[0012] Figure 5 It is a side view of the spatial position detection device of the evaporator pipe assembly of the automobile air-conditioning system.

[0013] Figure 6 It is a three-dimensional schematic diagram of the detection status of the spatial position detection device of the evaporator pipe assembly of the automobile air-conditioning system.

[0014] Figure 7 This is a structural diagram of the pressing block and the positioning seat in the pressed state.

[0015] Figure 8 This is the structural diagram of the guide block detection status.

[0016] Among them: 1 is a base plate, 2 is a positioning frame, 3 is a detection frame, 4 is a positioning seat, 5 is a pressure block, 6 is a pressure rod, 7 is a supply pipe detection rod, 8 is a return pipe detection rod, 9 is a detection guide block, 10 is a detection sleeve, 11 is a supply pipe, 12 is a return pipe, 13 is a seat block, 14 is a supply hole, 15 is a return hole, 16 is an adjusting bolt, 17 is a connecting seat, 18 is a supply pipe positioning pin, 19 is a return pipe positioning pin, 20 is a pressure mechanism, 21 is a double-headed stud, 22 is a sliding bearing, 23 is an accommodating cut-off groove, and 24 is a matching groove. DETAILED DESCRIPTION

[0017] Furthermore, the technical solution for which protection is sought in the present utility model is described in detail in conjunction with specific embodiments and their accompanying drawings.

[0018] A device for detecting the spatial position of an evaporator pipe assembly of an automobile air conditioning system, such as Figures 2 to 8 As shown, it is composed of a base plate 1, a positioning frame 2, a detection frame 3, a positioning seat 4, a pressure block 5, a pressure rod 6, a supply pipe detection rod 7, a return pipe detection rod 8, a detection guide block 9, an adjusting bolt 16, a connecting seat 17, a pressure mechanism 20 and a sliding bearing 22.

[0019] The bottom plate 1 is arranged horizontally, the positioning frame 2, the detection frame 3 and the positioning seat 4 are respectively fixedly installed on the bottom plate 1 corresponding to each other, and the upper end of the positioning seat 4 has a positioning plane, such as Figure 3 As shown, the positioning plane is provided with a supply pipe positioning pin 18 and a return pipe positioning pin 19, respectively, and a accommodating cut-off groove 23 for accommodating the stud 21 on the seat block 13 and a matching groove 24 adapted to the structure of the seat block 13 are provided. The pressure mechanism 20 is matched with a manual quick clamp with a self-locking function, which is fixedly installed on the positioning frame 2. The pressure rod 6 is vertically arranged and connected to the pressure mechanism 20 and can be controlled by the pressure mechanism 20 to move vertically up and down. The lower end is threadedly connected with the inverted adjusting bolt 16. The pressure block 5 is fixedly connected with the connecting seat 17. Figure 4 As shown, the pressing block 5 and the pressing rod 6 are connected to each other through the hooking cooperation between the connecting seat 17 and the bolt cap of the adjusting bolt 16. The pressing block 5 corresponds to the positioning seat 4 in the vertical direction, and can cooperate with the positioning seat 4 to fix the seat block 13 of the locking positioning device on the positioning seat 4. The detection guide block 9 is arranged and installed on the detection frame 3, as shown in FIG. Figure 8 As shown, guide holes corresponding to the structures of the supply pipe detection rod 7 and the return pipe detection rod 8 are opened on the detection guide block 9, and the sliding bearings 22 are respectively embedded in the guide holes, so that the supply pipe detection rod 7 and the return pipe detection rod 8 can be correspondingly inserted in the guide holes, and diameter-increasing limit shoulders are respectively provided at the rear parts of the supply pipe detection rod 7 and the return pipe detection rod 8, and circular detection sleeves 10 that can be inserted with the supply pipe 11 and the return pipe 12 are respectively provided at the front ends, and observation grooves are respectively opened on the detection sleeves 10, and the observation grooves are cut-off grooves with the radius depth of the detection sleeves 10.

[0020] The spatial position detection device for the evaporator pipe assembly of the automobile air conditioning system described in this embodiment is used to qualitatively detect the spatial position of the two ends of the evaporator pipe assembly of the automobile air conditioning system. The method is as follows: first, the pressure mechanism 20 is pre-set to a non-pressure state, and at the same time, the supply pipe detection rod 7 and the return pipe detection rod 8 are fully pulled back so that the two are in the position to be detected. Take the automobile air conditioning system evaporator pipe assembly to be detected, such as Figure 7As shown, the supply hole 14 and the return hole 15 on the seat block 13 are aligned with the supply pipe positioning pin 18 and the return pipe positioning pin 19 on the positioning seat 4, and are respectively matched and sleeved on the supply pipe positioning pin 18 and the return pipe positioning pin 19, so that the seat block 13 and the positioning seat 4 form a stable match and are positioned and placed on the positioning seat 4; then, the pressure mechanism 20 is operated to switch it to a pressure state, as shown in FIG. Figure 7 As shown, the seat block 13 is pressed and clamped on the positioning seat 4, so that the automobile air-conditioning system evaporator pipe assembly to be tested is fixed in the automobile air-conditioning system evaporator pipe assembly spatial position detection device; then, the supply pipe detection rod 7 and the return pipe detection rod 8 are pushed forward in turn to detect the spatial position status of the end of the supply pipe 11 and the return pipe 12. Under the premise of maintaining the structural state of the automobile air-conditioning system evaporator pipe assembly stable, if the detection sleeve 10 on the supply pipe detection rod 7 or the return pipe detection rod 8 cannot naturally correspond to and fit on the supply pipe 11 or the return pipe 12 during the pushing process, it can be directly determined that the automobile air-conditioning system evaporator pipe assembly is a defective product; or if the detection sleeve 10 on the supply pipe detection rod 7 or the return pipe detection rod 8 can correspond to and fit on the supply pipe 11 or the return pipe 12, but the matching degree of the sleeve is poor, so that the supply pipe detection rod 7 or the return pipe detection rod 8 cannot be fully pushed forward relative to the detection guide block 9, resulting in the operation When the personnel cannot observe the supply pipe 11 or the return pipe 12 inserted into the inspection sleeve 10 through the observation groove opened on the inspection sleeve 10, that is, the supply pipe 11 or the return pipe 12 does not reach the standard insertion depth, the automobile air-conditioning system evaporator pipe assembly can also be judged as an unqualified product. On the contrary, only when the inspection sleeves 10 on the supply pipe inspection rod 7 and the return pipe inspection rod 8 can naturally correspond to and align with the supply pipe 11 and the return pipe 12 respectively, and can be fully pushed forward relative to the inspection guide block 9 so that the supply pipe 11 and the return pipe 12 are fully inserted into the inspection sleeve 10, and the operator can observe the supply pipe 11 and the return pipe 12 inserted in the inspection sleeve 10 through the observation grooves opened on the two inspection sleeves 10, it indicates that the supply pipe 11 and the return pipe 12 have reached the standard insertion depth in the inspection sleeve 10, and it can be determined that the spatial position detection indicators of the two ends of the automobile air-conditioning system evaporator pipe assembly are qualified.

Claims

1. A device for detecting the spatial position of an evaporator pipe assembly of an automobile air conditioning system, characterized in that: include: A base plate (1), a positioning frame (2), a detection frame (3), a positioning seat (4), a pressure block (5), a pressure rod (6), a supply pipe detection rod (7) and a return pipe detection rod (8); the base plate (1) is a horizontally arranged working platform; the positioning frame (2), the detection frame (3) and the positioning seat (4) are respectively fixedly mounted on the base plate (1) corresponding to each other; the upper end of the positioning seat (4) has a positioning plane, on which a supply pipe positioning pin (18) and a return pipe positioning pin (19) are respectively arranged; the supply pipe positioning pin (18) and the return pipe positioning pin (19) respectively correspond to the supply hole (14) and the return hole (15) on the seat block (13) in the evaporator pipe assembly, and can constitute The seat block (13) is positioned in cooperation with the seat block (13); a pressure mechanism (20) is connected and installed on the positioning frame (2); the pressure rod (6) is guided by the positioning frame (2) to maintain a dynamic vertical setting, connected to the pressure mechanism (20) and can be controlled by the pressure mechanism (20) to move up and down; the pressure block (5) is fixedly connected to the lower end of the pressure rod (6) and corresponds to the positioning seat (4) in the upper and lower directions; when the pressure rod (6) is fully moved downward, the pressure block (5) can form a pressing and clamping cooperation with the positioning seat (4); a detection guide block (9) is installed on the detection frame (3), and two detection guide blocks (9) are provided on the detection guide block (9) which can respectively cooperate with and insert and axially guide the supply pipe detection rod (7) and the The guide hole of the return pipe detection rod (8) is provided, the opening axis direction of the guide hole is in an upward tilt angle A with respect to the spatial horizontal line, the supply pipe detection rod (7) and the return pipe detection rod (8) are respectively provided with a diameter increasing limit shoulder, and at the same time, a detection sleeve (10) having a structure corresponding to the supply pipe (11) and the return pipe (12) is provided at the front end, and an observation groove is respectively provided on the detection sleeve (10); when the supply pipe detection rod (7) and the return pipe detection rod (8) are respectively fully inserted into the guide hole with a maximum stroke, the horizontal distance between the observation groove on the supply pipe detection rod and the central axis of the supply pipe positioning pin (18) is X1, and the return pipe detection rod (7) and the return pipe detection rod (8) are respectively provided with a horizontal distance X1 between the observation groove on the supply pipe detection rod and the central axis of the supply pipe positioning pin (18) The horizontal distance between the observation groove on the rod and the central axis of the return pipe positioning pin (19) is X2, the horizontal distance between the center of the cross section of the supply pipe detection rod (7) and the return pipe detection rod (8) and the central axis of the supply pipe positioning pin (18) is Y, the height distance between the center of the cross section where the observation groove on the supply pipe detection rod (7) is opened and the upper end surface of the positioning seat (4) is H2, and the height distance between the center of the cross section where the observation groove on the return pipe detection rod (8) is opened and the upper end surface of the positioning seat (4) is H1, wherein: the distance parameters X1, X2, Y, H1 and H2 and the angle parameter A are all parameter limiting standards for the spatial position of the evaporator pipe assembly of the automobile air conditioning system.

2. A device for detecting the spatial position of an evaporator pipe assembly of an automobile air conditioning system as claimed in claim 1, characterized in that: A pressure block adjustment mechanism is provided between the pressure rod (6) and the pressure block (5), and the pressure block adjustment mechanism comprises: an adjustment bolt (16) and a connecting seat (17), wherein the adjustment bolt (16) is coaxially threadedly connected to the pressure rod (6), and the connecting seat (17) is fixedly connected to the upper end of the pressure block (5) and forms a hanging fit with the inverted bolt cap of the adjustment bolt (16), so that the pressure block (5) and the pressure rod (6) are connected to each other.

3. A device for detecting the spatial position of an evaporator pipe assembly of an automobile air conditioning system as claimed in claim 1 or 2, characterized in that: Sliding bearings (22) are respectively installed in the guide holes opened on the detection guide block (9).

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