A detection device for the spatial dimensions of a hydraulic oil pipe and its usage method

Abstract

The present invention relates to a detection device for the spatial dimensions of a hydraulic oil pipe and a method for using the same. It solves the technical problems that the existing method of using a die and projection to detect the spatial dimensions of a hydraulic oil pipe has high costs and a long processing cycle for the special die. The detection device of the present invention includes a base, a lower end mounting joint, at least one support, a second pin and at least one first pin. The second pin is arranged on the support connected to the upper end joint of the oil pipe. The spatial position relationship among the base, the lower end mounting joint, the second pin and the support connected to the upper end joint of the oil pipe simulates the spatial position relationship of the corresponding joints and mounting surfaces on the product connected to the hydraulic oil pipe in the actual scenario. By installing the hydraulic oil pipe on the detection device, it can quickly and accurately detect whether the spatial dimensions of the hydraulic oil pipe meet the installation requirements.

Description

Technical Field

[0001] The present invention relates to a detection device for the spatial dimensions of a hydraulic oil pipe and a method for using the same. Background Art

[0002] A hydraulic oil pipe is a pipe fitting for medium transmission under hydraulic conditions. Generally, a hydraulic oil pipe is a non-standard part with many spatial dimension elements and a relatively complex structure. As shown in Figure 1 , Figure 2 , and Figure 3 , the hydraulic oil pipe includes an upper pipe joint 01, a lower pipe joint 02, and a pipe body 03. The pipe body 03 includes a relatively straight middle section 031 and bent sections 032 located at both ends of the middle section 031 respectively. In some scenarios, the pipe body 03 has a long dimension, with multiple middle sections 031 and corresponding multiple bent sections 032. The upper pipe joint 01 and the lower pipe joint 02 of the hydraulic oil pipe are respectively used to connect with the upper product installation joint 04 and the lower product installation joint 05 of the application product. The installation surface where the upper product installation joint 04 is located is the upper product installation surface 06, and the installation surface where the lower product installation joint 05 is located is the lower product installation surface 07. For a specific application scenario, after a hydraulic oil pipe is specially customized, before assembling the product, it is often necessary to detect its spatial dimensions to ensure that its spatial dimensions in the actual application scenario meet the installation requirements. During installation, the installation joints of the hydraulic oil pipe should be made to exactly coincide with the installation joints of the actual application product as much as possible, without generating size deviations that are too short or too long, because a large spatial dimension deviation will lead to an increase in installation stress, making it easy for the hydraulic oil pipe to break at the two fixed-position joints with the product, affecting the fatigue life of the hydraulic oil pipe. At the same time, it should be ensured that there is no interference between the hydraulic oil pipe and other parts at the same installation part of the product during installation.

[0003] In the prior art, usually, a method using a die and projection is adopted to detect whether the spatial dimensions of a hydraulic oil pipe meet the installation requirements. Using this method requires special die and projection equipment, which has the defects of high cost and a long processing period for the special die. Especially when a one-time temporary re-inspection is required, the limitations of this method are more obvious. Summary of the Invention

[0004] The object of the present invention is to solve the technical problems that the existing method using a die and projection to detect whether the spatial dimensions of a hydraulic oil pipe meet the installation requirements has high cost and a long processing period for the special die, and to provide a detection device for the spatial dimensions of a hydraulic oil pipe and a method for using the same. The present invention can quickly re-inspect the spatial dimensions of a hydraulic oil pipe and quickly and accurately know whether the spatial dimensions of the hydraulic oil pipe meet the installation requirements.

[0005] The technical solution of the present invention is as follows:

[0006] ​​​​​​A detection device for the spatial dimensions of a hydraulic oil pipe, characterized in that it includes a base, a lower end mounting joint and a support arranged on the base, a second pin and at least one first pin arranged on the support;

[0007] A support mounting surface for connecting with the upper end joint of the oil pipe is arranged on the support, and the support mounting surface simulates the upper end mounting surface of the product, and the flatness of the two is the same;

[0008] A second mounting hole adapted to the second pin is arranged on the support at the position of the support mounting surface, and the second pin is installed in the second mounting hole;

[0009] A base mounting surface is arranged on the base, and the base mounting surface simulates the lower end mounting surface of the product, and the flatness of the two is the same;

[0010] The spatial position relationship between the base mounting surface and the support mounting surface is the same as the spatial position relationship between the lower end mounting surface and the upper end mounting surface of the product;

[0011] The spatial position relationship between the lower end mounting joint and the second pin is the same as the spatial position relationship between the lower end mounting joint and the upper end mounting joint of the product, and the lower end mounting joint and the second pin respectively correspond to the positions of the lower end mounting joint and the upper end mounting joint of the product;

[0012] The lower end mounting joint has the same size as the lower end mounting joint of the product, and the lower end mounting joint is used to connect with the lower end joint of the hydraulic oil pipe;

[0013] The second pin includes a second pin tail section, a second pin positioning section and an upper end mounting joint arranged coaxially in sequence along the penetration direction; the outer diameter of the second pin tail section is greater than the aperture of the second mounting hole, and the outer diameter of the upper end mounting joint is less than the aperture of the second mounting hole; the outer diameter of the second pin positioning section is adapted to the aperture of the second mounting hole and can move back and forth along the second mounting hole, and the upper end mounting joint extends out of one side of the support mounting surface;

[0014] The upper end mounting joint has the same size as the upper end mounting joint of the product, and the upper end mounting joint is used to connect with the upper end joint of the hydraulic oil pipe;

[0015] One end of the first pin extends out of the support, which is the extending end, and grooves are arranged along the length direction of the extending end for the middle section of the hydraulic oil pipe to be placed in;

[0016] The first pin is arranged on the support along the extending direction of the middle section of the hydraulic oil pipe, so that the middle section of the hydraulic oil pipe can be naturally placed in the groove, and the distance between the bottom of the groove and the support mounting surface is the minimum distance between the middle section of the hydraulic oil pipe and the support mounting surface.

[0017] Further, there are a plurality of the first pins, and the plurality of first pins respectively correspond to a plurality of intermediate sections of the hydraulic oil pipe one by one, and the plurality of first pins are all arranged on the support.

[0018] Further, there are a plurality of the first pins; the support is composed of a plurality of branch supports, the plurality of branch supports are all arranged on the base, and at least one first pin is arranged on each of the plurality of branch supports; the second pin is arranged on one of the branch supports.

[0019] Further, the tail section of the second pin is a second cylindrical boss structure.

[0020] Further, the clearance between the positioning section of the second pin and the second mounting hole is 0.03 - 0.05 mm.

[0021] Further, the support is provided with a first mounting hole adapted to the first pin;

[0022] The mounting end of the first pin is provided with a first cylindrical boss structure, and the outer diameter of the first cylindrical boss structure is greater than the aperture of the first mounting hole.

[0023] Further, the groove is a U-shaped groove, and the width of the U-shaped groove is 0.3 mm - 0.5 mm larger than the outer diameter of the hydraulic oil pipe; the depth of the U-shaped groove is greater than the outer diameter of the hydraulic oil pipe.

[0024] Further, scale lines are respectively arranged on the first pin and the support, and the scale lines on the first pin are aligned with the scale lines on the support.

[0025] Meanwhile, the present invention provides a use method of the above-mentioned detection device for the spatial dimensions of the hydraulic oil pipe, which is characterized in that it includes the following steps:

[0026] 1) Install the detection device well without installing the second pin.

[0027] 2) Place the lower end joint of the oil pipe into the lower end mounting joint on the base, adjust the direction of the hydraulic oil pipe so that the upper end joint of the oil pipe faces the second mounting hole, place the intermediate section of the hydraulic oil pipe into the groove of the first pin, align the upper end joint of the oil pipe with the second mounting hole on the support, and then tighten and fix the lower end joint of the oil pipe with the lower end mounting joint.

[0028] 3) Insert the second pin into the second mounting hole, and slowly push the second pin towards the upper end joint of the oil pipe. If the upper end joint of the oil pipe can enter the hole of the upper end mounting joint and the end face of the tail section of the second pin contacts the back of the support, the spatial dimensions of the hydraulic oil pipe are qualified; otherwise, they are unqualified.

[0029] Furthermore, step 2) is specifically as follows: place the lower end joint of the oil pipe into the lower end mounting joint on the base, adjust the direction of the hydraulic oil pipe so that the upper end joint of the oil pipe faces the second mounting hole, and when adjusting the direction of the hydraulic oil pipe, place the multiple middle sections of the hydraulic oil pipe into the grooves of the corresponding multiple first pins in order from the lower end to the upper end of the hydraulic oil pipe, and then align the upper end joint of the hydraulic oil pipe with the second mounting hole on the support, and finally tighten and fix the lower end joint of the oil pipe to the lower end mounting joint; this step is suitable for situations where the hydraulic oil pipe is long and has multiple middle sections.

[0030] Beneficial effects of the present invention:

[0031] 1. The present invention provides a device for detecting the spatial dimensions of a hydraulic oil pipe. By simulating the connection scenario of the corresponding product for the hydraulic oil pipe to be detected, the device can accurately detect whether the spatial dimensions of the hydraulic oil pipe meet the installation requirements. The detection device has a simple structure, low requirements on the technical capabilities and equipment for processing, is easy to manufacture and assemble, and greatly shortens the processing and manufacturing cycle of the detection device. Compared with professional detection equipment, it does not require expensive maintenance, and the processing cost and maintenance cost are extremely low, which greatly improves the production efficiency of the industry and reduces the cost.

[0032] 2. In the device for detecting the spatial dimensions of a hydraulic oil pipe of the present invention, the tail section of the second pin adopts a second cylindrical boss structure to limit the length of the second pin passing through the second mounting hole. The manufacturing process is simple and fast, and the operation is convenient.

[0033] 3. In a device for detecting the spatial dimensions of a hydraulic oil pipe according to the present invention, the clearance between the second pin positioning section and the second mounting hole is 0.03-0.05 mm, which can ensure that the second pin can be easily inserted into and withdrawn from the second mounting hole, and can also ensure the precise spatial position of the protruding end of the second pin after passing through the first mounting hole.

[0034] 4. In a device for detecting the spatial dimensions of a hydraulic oil pipe according to the present invention, a first cylindrical boss structure is arranged on a first pin to limit the length of the first pin passing through a first mounting hole. The device is simple and quick to manufacture and is easy to operate.

[0035] 5. The present invention provides a device for detecting the spatial dimensions of a hydraulic oil pipe, wherein the groove is designed as a U-shaped groove for limiting the position of the hydraulic oil pipe, and the shape is more easily close to the shape and dimension of the outer cylindrical surface of the hydraulic oil pipe, and is easy to process and manufacture.

[0036] 6. In a device for detecting the spatial dimensions of a hydraulic oil pipe according to the present invention, the first pin and the support adopt a method of aligning the first pin and the support by means of a scale line, so that the positioning and installation can be performed quickly and accurately.

[0037] 7. The method for using the device for detecting the spatial dimensions of a hydraulic oil pipe of the present invention is simple, easy to operate, and has low requirements on the skill level of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural view of a hydraulic oil pipe;

[0039] Figure 2 is Figure 1 the top view of the hydraulic oil pipe in

[0040] Figure 3 is a schematic assembly view of the hydraulic oil pipe and the product;

[0041] Figure 4 is a schematic structural view (with the hydraulic oil pipe installed) of an embodiment of a detection device for the spatial dimensions of the hydraulic oil pipe of the present invention;

[0042] Figure 5 is Figure 4 the side view of

[0043] Figure 6 is a schematic structural view of the first pin in an embodiment of a detection device for the spatial dimensions of the hydraulic oil pipe of the present invention;

[0044] Figure 7 is a schematic structural view of the second pin in an embodiment of a detection device for the spatial dimensions of the hydraulic oil pipe of the present invention;

[0045] Figure 8 is a schematic on-site installation view of the hydraulic oil pipe and the product.

[0046] Reference numerals:

[0047] 01 - upper end joint of the oil pipe, 02 - lower end joint of the oil pipe, 03 - pipe body, 031 - middle section, 032 - bent section, 04 - upper end installation joint of the product, 05 - lower end installation joint of the product, 06 - upper end installation surface of the product, 07 - lower end installation surface of the product, 08 - other parts on the product;

[0048] 1 - base, 11 - base installation surface, 2 - support, 21 - support installation surface, 22 - first installation hole, 23 - second installation hole, 3 - first pin, 31 - first cylindrical boss structure, 32 - groove, 4 - second pin, 41 - tail section of the second pin, 42 - positioning section of the second pin, 43 - upper end installation joint, 5 - lower end installation joint, 6 - graduation line. Detailed implementation manners

[0049] The present invention will be described in detail below with reference to the drawings and embodiments.

[0050] As Figure 4 and Figure 5 shown, a detection device for the spatial dimensions of a hydraulic oil pipe according to the present invention includes a base 1, a lower end installation joint 5 provided on the base 1, a support 2, a second pin 4, and a first pin 3.

[0051] In this embodiment, the support 2 and the hydraulic oil pipe are arranged in a one-to-one manner. The hydraulic oil pipe has only an intermediate section 031 with a straight section, that is, the support 2 and the intermediate section 031 are arranged in a one-to-one manner. The base 1 and the support 2 are rigidly connected, and their assembly can adopt fixed structures such as interference fit or pin positioning bolt connection. A base mounting surface 11 is provided on the base 1, and a support mounting surface 21 for connecting with the upper end joint 01 of the oil pipe is provided on the support 2. After the base 1 and the support 2 are assembled, the flatness of the base mounting surface 11 and the support mounting surface 21 and the perpendicularity between the two meet the dimensional and geometric tolerance assembly requirements of the lower end mounting surface 07 and the upper end mounting surface 06 of the product. The support mounting surface 21 of the support 2 simulates the upper end mounting surface 06 of the product, and its flatness is the same as that of the upper end mounting surface 06 of the product. The base mounting surface 11 of the base 1 simulates the lower end mounting surface 07 of the product, and its flatness is the same as that of the lower end mounting surface 07 of the product. The spatial position relationship between the base mounting surface 11 and the support mounting surface 21 of the support 2 is the same as the spatial position relationship between the lower end mounting surface 07 and the upper end mounting surface 06 of the product. A second mounting hole 23 adapted to the second pin 4 is provided on the support mounting surface 21, and the second pin 4 is inserted into the second mounting hole 23; a first mounting hole 22 adapted to the first pin 3 is provided at the position corresponding to the intermediate section 031 on the support 2. The spatial position relationship between the lower end mounting joint 5 and the second pin 4 simulates the spatial position relationship between the lower end mounting joint 05 and the upper end mounting joint 04 of the product, that is, the spatial position relationship between the lower end mounting joint 5 and the second pin 4 is the same as the spatial position relationship between the lower end mounting joint 05 and the upper end mounting joint 04 of the product, and the lower end mounting joint 5 and the second pin 4 respectively correspond to the positions of the lower end mounting joint 05 and the upper end mounting joint 04 of the product. The lower end mounting joint 5 has the same size as the lower end mounting joint 05 of the product, and the lower end mounting joint 5 is used to connect with the lower end joint 02 of the hydraulic oil pipe. The lower end mounting joint 5 can also directly use the lower end mounting joint 05 of the product.

[0052] As Figure 7As shown, the second pin 4 includes a second pin tail section 41, a second pin positioning section 42, and an upper end mounting joint 43 that are coaxially arranged in sequence along the penetration direction. The outer diameter of the second pin tail section 41 is larger than the aperture diameter of the second mounting hole 23. In this embodiment, the second pin tail section 41 is a second cylindrical boss structure, and the second cylindrical boss structure is mainly used to limit the maximum extension amount of the second pin 4 after passing through the support 2. That is, when the second cylindrical boss structure of the second pin 4 contacts the support 2, the length of the second pin 4 extending through the support 2 reaches the maximum. The outer diameter of the upper end mounting joint 43 is smaller than the aperture diameter of the second mounting hole 23. The outer diameter of the second pin positioning section 42 is adapted to the aperture diameter of the second mounting hole 23 and can move back and forth along the second mounting hole 23. The upper end mounting joint 43 has the same size as the upper end mounting joint 04 of the product, and the upper end mounting joint 43 is used to connect with the upper end joint 01 of the hydraulic oil pipe. The second pin 4 is inserted into the second mounting hole 23 from the back of the support 2, and the upper end mounting joint 43 is pushed to one side of the support mounting surface 21. Since the outer diameter of the second pin tail section 41 is larger than the aperture diameter of the second mounting hole 23, when pushed to the maximum displacement, the second pin tail section 41 can prevent the second pin 4 from moving forward continuously, so that the second pin tail section 41 is always located on the back side of the support 2. The second pin positioning section 42 can adjust the extension position of the upper end mounting joint 43 by moving back and forth along the second mounting hole 23. The upper end mounting joint 43 is used to simulate the upper end mounting joint 04 of the product. The second pin positioning section 42 mainly determines the central position of the second pin 4 on the support 2 through the matching dimensions between the second pin 4 and the second mounting hole 23 on the support 2. The second pin positioning section 42 can move in the mounting hole, but the dimensions need to be ensured to be precise. Therefore, the axial clearance between the second mounting hole 23 and the second pin positioning section 42 is 0.03 mm to 0.05 mm.

[0053] The first pin 3 is arranged on the support 2 along the extension direction of the middle section 031 of the hydraulic oil pipe, and the setting position corresponds to the middle section 031 of the hydraulic oil pipe. One end of it extends out of the support 2, and this end is defined as the extending end, and the other end is defined as the mounting end. The extending end is provided with a groove 32 along the length direction, and the groove 32 is used for the middle section 031 of the hydraulic oil pipe to be placed in. The first pin 3 penetrates into the first mounting hole 22, and the mounting end and the extending end are respectively located on both sides of the support 2. In this embodiment, the structure of the first pin 3 is as Figure 6As shown in the figure, the installation end of the first pin 3 is provided with a first cylindrical boss structure 31. The outer diameter of the first cylindrical boss structure is larger than the aperture of the first installation hole 22. The first cylindrical boss structure 31 is mainly used to limit the maximum extension amount of the first pin 3 after passing through the support 2. That is, when the first cylindrical boss structure 31 contacts the support 2, the length of the first pin 3 extending through the support 2 reaches the maximum. Along the length direction of the extending end of the first pin 3, a groove 32 is provided. The distance between the bottom of the groove 32 and the support mounting surface 21 is the minimum distance between the middle section 031 of the hydraulic oil pipe and the support mounting surface 21. In this embodiment, the groove 32 is designed as a U-shaped groove. Insert the first pin 3 into the first installation hole 22 from the back of the support 2. When the first cylindrical boss structure contacts the back of the support 2, the first pin 3 is fixed to the support 2 by means of bolt or pin connection. The groove 32 at the extending end of the first pin 3 is used to naturally place the middle section 031 of the hydraulic oil pipe during detection, mainly to detect whether the actual dimension of the hydraulic oil pipe from the support mounting surface 21 is greater than or equal to the distance between the bottom of the U-shaped groove and the support mounting surface 21. The width of the U-shaped groove is 0.3 mm to 0.5 mm larger than the outer diameter of the hydraulic oil pipe, so that the hydraulic oil pipe can be easily placed into the U-shaped groove; the depth of the U-shaped groove is greater than the diameter of the hydraulic oil pipe, mainly to allow the actual dimension of the hydraulic oil pipe from the support mounting surface 21 to be greater than the dimension requirement of the U-shaped groove from the support mounting surface 21. Therefore, only the relative dimension between the support mounting surface 21 and the middle section 031 of the hydraulic oil pipe on the side close to the support mounting surface 21 in the horizontal direction is limited. Because in general working conditions, there will be other parts on the product. In order to avoid other parts, the position of the first pin 3 on the support 2 is arranged so that the middle section 031 of the hydraulic oil pipe can be naturally placed into the U-shaped groove, and the position of the U-shaped groove relative to the first pin 3 is arranged so that the distance between the bottom of the U-shaped groove and the support mounting surface 21 is the minimum distance between the middle section 031 of the hydraulic oil pipe and the support mounting surface 21. That is, when the middle section 031 of the hydraulic oil pipe is placed into the U-shaped groove and the middle section 031 of the hydraulic oil pipe is in close contact with the bottom of the U-shaped groove, the distance between the middle section 031 of the hydraulic oil pipe and the support mounting surface 21 is equal to the distance between the bottom of the U-shaped groove and the support mounting surface 21, which is the minimum distance and also the ideal dimension requirement of the hydraulic oil pipe in the horizontal direction. For the actual application scenario of the hydraulic oil pipe, refer to Figure 8 , the hydraulic oil pipe needs to avoid interference with other parts 08 of the product, such as avoiding Figure 8 the outer circle and the bottom end protruding from the product shell on

[0054] Engraving lines 6 are respectively provided on the support 2 and the first pin 3, and the engraving lines 6 on the support 2 and the first pin 3 are aligned with each other. Mainly by using the method of aligning the engraving lines, when the first pin 3 is fixed to the support 2 conveniently, quickly and accurately, the position of the U-shaped groove can be ensured to meet the direction requirements of the hydraulic oil pipe.

[0055] When the hydraulic oil pipe is relatively long, there are multiple middle sections 031 in the middle section, and there are also space installation dimension requirements, then multiple first pins 3 can be used. The multiple first pins 3 respectively correspond to multiple middle sections 031 of the hydraulic oil pipe one by one, and the multiple first pins 3 are all arranged on the support 2. If the length of the hydraulic oil pipe is relatively large and one support 2 cannot meet the length requirement, the support 2 is set into multiple branch supports. The specific quantity and length can be set according to the length of the hydraulic oil pipe. Each branch support can be set one-to-one with multiple first pins 3 according to the actual situation, or multiple first pins 3 can be arranged on one branch support, aiming to detect the lateral space dimension of multiple middle ends 031 of the hydraulic oil pipe.

[0056] The present invention also provides a usage method of the detection device for the spatial dimension of the above-mentioned hydraulic oil pipe, including the following steps:

[0057] 1) Install the detection device well, and do not install the second pin 4 first.

[0058] 2) Place the lower end joint 02 of the oil pipe into the lower end installation joint 5 on the base 1, adjust the direction of the hydraulic oil pipe so that the upper end joint 01 of the oil pipe faces the second installation hole 23, place the middle section 031 of the hydraulic oil pipe into the groove 32 of the first pin 3, and align the upper end joint 01 of the oil pipe with the second installation hole 23 on the 2 supports, and then tighten and fix the lower end joint 02 of the oil pipe with the lower end installation joint 5.

[0059] In the case where the hydraulic oil pipe is long and has multiple middle sections (031), when adjusting the direction of the hydraulic oil pipe so that the upper end joint 01 of the oil pipe faces the second installation hole 23, it is necessary to sequentially place the multiple middle sections 031 of the hydraulic oil pipe into the corresponding grooves 32 of the multiple first pins 3 in the order from the lower end to the upper end of the hydraulic oil pipe, then align the upper end joint of the hydraulic oil pipe with the second installation hole 23 on the support 2, and finally tighten and fix the lower end joint 02 of the oil pipe with the lower end installation joint 5.

[0060] 3) Insert the second pin 4 into the second installation hole 23, and slowly push the second pin 4 towards the upper end joint 01 of the oil pipe. If the upper end joint 01 of the oil pipe can enter the hole of the upper end installation joint 43 and the end face of the second pin tail section 41 of the second pin 4 contacts the back of the support 2, then the spatial dimension of the hydraulic oil pipe is qualified; otherwise, it is unqualified.

[0061] When the hydraulic oil pipe is used in product assembly, the position dimensions of the two ends of the joint and the position dimensions of the middle section that need to avoid the parts are crucial. The other space dimensions have little impact on the assembly and use. Therefore, the detection of the key dimensions on the hydraulic oil pipe is of great importance. Measuring the space dimensions of the hydraulic oil pipe with a special die and projection equipment is costly, and the processing cycle of the special die is long, and the projection equipment requires professional operators. Especially for the measurement of the space dimensions of temporary hydraulic oil pipes, there are great limitations in terms of cost and time. The present invention breaks through the limitations of die and projection measurement. The measurement accuracy of the invented tooling can fully meet the requirements of the assembly and use of the hydraulic oil pipe; the production of the measurement tooling is convenient, fast and low-cost; the operation method of the measurement has basically no difficulty requirements, and the requirements for the measurement personnel are reduced. Therefore, under the condition of no die and special projection equipment, the invention can conveniently and quickly measure the space dimensions of the hydraulic oil pipe.

Claims

1. A detection device for the spatial dimensions of a hydraulic oil pipe, characterized in that: It includes a base (1), a lower end mounting joint (5) and a support (2) provided on the base (1), a second pin (4) and at least one first pin (3) provided on the support (2); A support mounting surface (21) for connecting with the upper end joint (01) of the oil pipe is provided on the support (2), and the support mounting surface (21) simulates the upper end mounting surface (06) of the product, and the flatness of the two is the same; A second mounting hole (23) adapted to the second pin (4) is provided on the support mounting surface (21), and the second pin (4) is installed in the second mounting hole (23); A base mounting surface (11) is provided on the base (1), and the base mounting surface (11) simulates the lower end mounting surface (07) of the product, and the flatness of the two is the same; The spatial position relationship between the base mounting surface (11) and the support mounting surface (21) is the same as the spatial position relationship between the lower end mounting surface (07) and the upper end mounting surface (06) of the product; The spatial position relationship between the lower end mounting joint (5) and the second pin (4) is the same as the spatial position relationship between the lower end mounting joint (05) and the upper end mounting joint (04) of the product, and the lower end mounting joint (5) and the second pin (4) respectively correspond to the positions of the lower end mounting joint (05) and the upper end mounting joint (04) of the product; The lower end mounting joint (5) has the same size as the lower end mounting joint (05) of the product, and the lower end mounting joint (5) is used for connecting with the lower end joint (02) of the hydraulic oil pipe; The second pin (4) includes a second pin tail section (41), a second pin positioning section (42) and an upper end mounting joint (43) which are coaxially arranged in sequence along the penetrating direction; the outer diameter of the second pin tail section (41) is larger than the aperture of the second mounting hole (23), and the outer diameter of the upper end mounting joint (43) is smaller than the aperture of the second mounting hole (23); the outer diameter of the second pin positioning section (42) is adapted to the aperture of the second mounting hole (23) and can move back and forth along the second mounting hole (23), and the upper end mounting joint (43) extends out of one side of the support mounting surface (21); The upper end mounting joint (43) has the same size as the upper end mounting joint (04) of the product, and the upper end mounting joint (43) is used for connecting with the upper end joint (01) of the hydraulic oil pipe; One end of the first pin (3) extends out of the support (2) and is an extending end. A groove (32) is arranged along the length direction of the extending end, and the groove (32) is used for placing the middle section (031) of the hydraulic oil pipe; The first pin (3) is arranged on the support (2) along the extending direction of the middle section (031) of the hydraulic oil pipe, so that the middle section (031) of the hydraulic oil pipe can be naturally placed in the groove (32), and the distance between the bottom of the groove (32) and the support mounting surface (21) is the minimum distance between the middle section (031) of the hydraulic oil pipe and the support mounting surface (21).

2. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 1, characterized in that: There are multiple first pins (3), and the multiple first pins (3) respectively correspond to multiple middle sections (031) of the hydraulic oil pipe, and the multiple first pins (3) are all arranged on the support (2).

3. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 1, characterized in that: There are multiple first pins (3); The support (2) is composed of multiple branch supports, and the multiple branch supports are all arranged on the base (1). At least one first pin (3) is respectively arranged on the multiple branch supports; The second pin (4) is arranged on one of the branch supports.

4. The detection device for the spatial dimensions of a hydraulic oil pipe according to any one of claims 1-3, characterized in that: The tail section (41) of the second pin is a second cylindrical boss structure.

5. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 4, characterized in that: The clearance between the positioning section (42) of the second pin and the second mounting hole (23) is 0.03 - 0.05 mm.

6. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 5, characterized in that: The support (2) is provided with a first mounting hole (22) adapted to the first pin (3). The first pin (3) is inserted into the first mounting hole (22). One end extending out of the support (2) is the extending end, and the other end is the mounting end; The mounting end of the first pin (3) is provided with a first cylindrical boss structure (31), and the outer diameter of the first cylindrical boss structure (31) is larger than the aperture of the first mounting hole (22).

7. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 6, characterized in that: The groove (32) is a U-shaped groove, and the width of the U-shaped groove is 0.3 mm - 0.5 mm larger than the outer diameter of the hydraulic oil pipe; the depth of the U-shaped groove is larger than the outer diameter of the hydraulic oil pipe.

8. The detection device for the spatial dimensions of a hydraulic oil pipe according to claim 7, characterized in that: Engraved lines (6) are respectively arranged on the first pin (3) and the support (2), and the engraved lines (6) on the first pin (3) are aligned with the engraved lines (6) on the support (2).

9. A method for using the detection device for the spatial dimensions of a hydraulic oil pipe according to any one of claims 1-8, characterized in that, It includes the following steps: 1) Install the detection device well without installing the second pin (4); 2) Place the lower end joint (02) of the oil pipe into the lower end mounting joint (5) on the base (1). Adjust the direction of the hydraulic oil pipe so that the upper end joint (01) of the oil pipe faces the second mounting hole (23). Place the middle section (031) of the hydraulic oil pipe into the groove (32) of the first pin (3), and align the upper end joint (01) of the oil pipe with the second mounting hole (23) on the support (2), and then tighten and fix the lower end joint (02) of the oil pipe with the lower end mounting joint (5); 3) Insert the second pin (4) into the second mounting hole (23), and slowly push the second pin (4) towards the upper end joint (01) of the oil pipe. If the upper end joint (01) of the oil pipe can enter the hole of the upper end mounting joint (43), and the end face of the tail section (41) of the second pin (4) contacts the back of the support (2), then the spatial dimension of the hydraulic oil pipe is qualified, otherwise it is unqualified.

10. The usage method of a detection device for the spatial dimensions of a hydraulic oil pipe according to claim 9, characterized in that: Step 2) specifically is: Place the lower end joint (02) of the oil pipe into the lower end mounting joint (5) on the base (1). Adjust the direction of the hydraulic oil pipe so that the upper end joint (01) of the oil pipe faces the second mounting hole (23). When adjusting the direction of the hydraulic oil pipe, in the order from the lower end to the upper end of the hydraulic oil pipe, successively place the multiple middle sections (031) of the hydraulic oil pipe into the grooves (32) of the corresponding multiple first pins (3), then align the upper end joint of the hydraulic oil pipe with the second mounting hole (23) on the support (2), and finally tighten and fix the lower end joint (02) of the oil pipe with the lower end mounting joint (5); this step is applicable to the case where the hydraulic oil pipe is long and has multiple middle sections (031).

Images