Detection device and detection method

Abstract

The invention relates to the technical field of bicycle production, in particular to a detection device and a detection method. The device can simulate and determine the minimum distance between the tooth top of the fluted disc and the lower fork through the first graduated scale, and simulate and determine the minimum distance between the left crank and the left lower fork and the minimum distance between the right crank and the right lower fork through the second graduated scale and the third graduated scale. If the three minimum distances are larger than zero, the lower fork interferes with normal work of the fluted disc or the left crank or the right crank and affects normal riding, and if the three minimum distances are all larger than zero, the lower fork does not interfere with normal work of the fluted disc, the left crank and the right crank. The production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of bicycle production, and in particular to a detection device and a detection method. Background Art

[0002] The frame is the core part of the bicycle. It is the basic structure of the bicycle, and it is also the skeleton and body of the bicycle. Other parts are directly or indirectly installed on the frame. Among them, the bicycle transmission system group is the most important and directly affects the normal use of the bicycle.

[0003] In the production process of the frame, usually a design drawing is made first, and then production is carried out according to the drawing. However, in actual production, there are differences between the finished frame and the design drawing, and it cannot be guaranteed to be completely consistent. As a result, after the bicycle is assembled, there is a gap between the chainring or the left crank or the right crank and the lower fork that is too small, so that the lower fork affects the rotation of the chainring or the left crank or the right crank, making the bicycle unrideable, reducing product quality, increasing production costs, and reducing the company's R&D and competitiveness.

[0004] Therefore, there is an urgent need for a detection device and a detection method to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a detection device and a detection method, which can detect defective frames, prevent the assembly of defective frames, reduce production costs and improve the yield rate.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A detection device, a bicycle frame includes a front joint, a middle pipe joint, a five-way joint, a dropout, an upper tube, a lower tube, a middle pipe, an upper fork and a lower fork, the front joint is respectively connected to the upper tube and the lower tube, the middle pipe joint is respectively connected to the upper tube, the middle pipe and the upper fork, the five-way joint is respectively connected to the middle pipe, the lower tube and the lower fork, the dropout is respectively connected to the upper fork and the lower fork, a toothed disc is rotatably connected to the five-way joint, a left crank and a right crank are respectively connected to two sides of the toothed disc, and the detection device includes:

[0008] Base plate;

[0009] A first detection mechanism, the first detection mechanism comprising a first base and a first scale, the first base being slidably disposed on the bottom plate, the first scale being slidably disposed on the first base, and the first scale being capable of measuring the distance between the tooth tip of the toothed disc and the lower fork;

[0010] a second detection mechanism, the second detection mechanism comprising a second base, a second scale and a third scale, the second base being slidably disposed on the bottom plate, the second scale and the third scale being slidably disposed on two ends of the second base, respectively, the second scale being capable of measuring the distance between the left crank and the lower fork, and the third scale being capable of measuring the distance between the right crank and the lower fork;

[0011] A fixing mechanism, the fixing mechanism includes a third base, a fourth base, a first positioning block and a second positioning block, the third base and the fourth base are arranged at intervals on the bottom plate, the first positioning block is arranged on the third base, the second positioning block is arranged on the fourth base, and the first positioning block and the second positioning block are arranged at relative intervals, and the first positioning block and the second positioning block can be inserted into the five-way joint from the left and right sides.

[0012] As a preferred technical solution of the above-mentioned detection device, the first detection mechanism also includes a first locking member, and one end of the first locking member can pass through the first base and abut against the bottom plate.

[0013] As a preferred technical solution of the above-mentioned detection device, the second detection mechanism also includes a second fixed seat and a third fixed seat, the second fixed seat and the third fixed seat are respectively arranged at both ends of the second base, the second fixed seat is slidably sleeved on the outer periphery of the second scale, and the third fixed seat is slidably sleeved on the outer periphery of the third scale.

[0014] As a preferred technical solution of the above-mentioned detection device, the detection device also includes a first slide rail, the first slide rail is arranged on the bottom plate, and the first base is slidably arranged on the first slide rail.

[0015] As a preferred technical solution of the above-mentioned detection device, the detection device also includes a second slide rail, which is spaced apart and arranged in parallel with the first slide rail, and two ends of the second base are slidably connected to the first slide rail and the second slide rail respectively.

[0016] As a preferred technical solution of the above-mentioned detection device, the first detection mechanism also includes a first fixed seat, one end of the first fixed seat is arranged on the first base, and the other end of the first fixed seat is slidably sleeved on the outer periphery of the first scale.

[0017] As a preferred technical solution of the above-mentioned detection device, the first detection mechanism further includes a second locking member, and one end of the second locking member can pass through the first fixing seat and abut against the first scale.

[0018] As a preferred technical solution of the above-mentioned detection device, the fixing mechanism also includes a driving member, the first positioning block is slidably disposed on the third base, and the driving member is configured to be able to drive the first positioning block to approach or move away from the second positioning block.

[0019] As a preferred technical solution of the above-mentioned detection device, the detection device also includes a support block, which is arranged on the bottom plate, the support block is located between the third base and the fourth base, and the height of the support block is lower than the height of the first positioning block and the second positioning block.

[0020] A detection method, using the detection device in any one of the above preferred technical solutions, the detection method comprising:

[0021] S1: adjusting the first scale to a preset position, and then sliding the first base to a preset position;

[0022] S2: adjusting the second scale and the third scale to preset positions respectively, and then sliding the second base to a preset position;

[0023] S3: Fix the five-way joint by the first positioning block and the second positioning block, rotate the frame, if the lower fork contacts any one of the first scale, the second scale and the third scale, the frame is considered to be defective and the frame is discarded for correction; if the lower fork does not contact any of the first scale, the second scale and the third scale, the frame is considered to be good;

[0024] S4: Perform routine testing operations.

[0025] Beneficial effects of the present invention:

[0026] The present invention provides a detection device, wherein a bicycle frame comprises a front joint, a middle pipe joint, a five-way joint, a hook, an upper tube, a lower tube, a middle tube, an upper fork and a lower fork, wherein the front joint is respectively connected to the upper tube and the lower tube, wherein the middle pipe joint is respectively connected to the upper tube, the middle pipe and the upper fork, wherein the five-way joint is respectively connected to the middle pipe, the lower tube and the lower fork, wherein the hook is respectively connected to the upper fork and the lower fork, wherein a toothed disc is rotatably connected to the five-way joint, wherein a left crank and a right crank are respectively connected to two sides of the toothed disc, wherein the detection device comprises: a bottom plate, a first detection mechanism, a second detection mechanism and a fixing mechanism, wherein the first detection mechanism comprises a first base and a first scale, wherein the first base is slidably arranged on the bottom plate, wherein the first scale is slidably arranged on the first base, and wherein the first scale can measure the toothed disc The distance between the tooth tip and the lower fork; the second detection mechanism includes a second base, a second scale and a third scale, the second base is slidably set on the bottom plate, the second scale and the third scale are respectively slidably set at the two ends of the second base, the second scale can measure the distance between the left crank and the lower fork, and the third scale can measure the distance between the right crank and the lower fork; the fixing mechanism includes a third base, a fourth base, a first positioning block and a second positioning block, the third base and the fourth base are spaced apart on the bottom plate, the first positioning block is set on the third base, the second positioning block is set on the fourth base, and the first positioning block and the second positioning block are relatively spaced apart, and the first positioning block and the second positioning block can be inserted into the five-way joint from the left and right sides. The device can simulate and determine the minimum distance between the tooth tip of the chainring and the lower fork through the first scale, and simulate and determine the minimum distance between the left crank and the right crank and the left and right lower forks respectively through the second scale and the third scale. If any of the minimum distances is zero, it means that the lower fork interferes with the normal operation of the chainring or the left crank or the right crank, affecting normal riding. If the three minimum distances are all greater than zero, it means that the lower fork will not interfere with the normal operation of the chainring, the left crank and the right crank. The device can eliminate defective frames and prevent them from entering the assembly line, thereby avoiding reducing the quality of bicycles, improving the yield rate and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of a frame provided by an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of the structure of a detection device provided by an embodiment of the present invention;

[0030] Figure 3A first structural schematic diagram of a first detection mechanism provided by an embodiment of the present invention;

[0031] Figure 4 A second structural schematic diagram of the first detection mechanism provided by an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of a second detection mechanism provided by an embodiment of the present invention;

[0033] Figure 6 A first structural schematic diagram of a fixing mechanism provided in an embodiment of the present invention;

[0034] Figure 7 A second structural schematic diagram of a fixing mechanism provided in an embodiment of the present invention;

[0035] Figure 8 A schematic structural diagram of a base plate provided in an embodiment of the present invention.

[0036] In the figure:

[0037] 1. Front joint; 2. Middle pipe joint; 3. Five-way joint; 4. Dropout; 5. Upper tube; 6. Lower tube; 7. Middle tube; 8. Upper fork; 9. Lower fork; 10. Bottom plate; 101. Positioning groove; 11. First detection mechanism; 111. First base; 112. First scale; 113. First locking member; 114. First fixing seat; 115. Second locking member; 12. Second detection mechanism; 121. Second base; 122. Second scale; 123. Third scale; 124. Second Fixed seat; 125, third fixed seat; 126, third locking member; 127, fourth locking member; 128, fifth locking member; 13, fixing mechanism; 131, third base; 132, fourth base; 133, first positioning block; 134, second positioning block; 135, driving member; 14, first slide rail; 15, second slide rail; 16, supporting block; 17, first slider; 18, second slider; 19, third slider; 20, fourth scale; 21, fifth scale; 22, positioning mechanism. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection 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 the present invention can be understood according to specific circumstances.

[0040] In the present invention, 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] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figures 1 to 8 As shown, the present invention provides a detection device, the frame includes a front joint 1, a middle pipe joint 2, a five-way joint 3, a hook 4, an upper tube 5, a lower tube 6, a middle tube 7, an upper fork 8 and a lower fork 9, the front joint 1 is respectively connected to the upper tube 5 and the lower tube 6, the middle pipe joint 2 is respectively connected to the upper tube 5, the middle tube 7 and the upper fork 8, the five-way joint 3 is respectively connected to the middle tube 7, the lower tube 6 and the lower fork 9, the hook 4 is respectively connected to the upper fork 8 and the lower fork 9, the sprocket is rotatably connected to the five-way joint 3, the left crank and the right crank are respectively connected to the two sides of the sprocket, and the detection device includes: a base plate 10, a first detection mechanism 11, a second detection mechanism 12 and a fixing mechanism 13.

[0043] Specifically, the first detection mechanism 11 includes a first base 111 and a first scale 112, the first base 111 is slidably set on the bottom plate 10, the first scale 112 is slidably set on the first base 111, and the first scale 112 can measure the distance between the tooth tip of the sprocket and the lower fork 9; the second detection mechanism 12 includes a second base 121, a second scale 122 and a third scale 123, the second base 121 is slidably set on the bottom plate 10, the second scale 122 and the third scale 123 are respectively slidably set at both ends of the second base 121, and the second scale 122 can measure the left curve The distance between the handle and the lower fork 9, the third scale 123 can measure the distance between the right crank and the lower fork 9; the fixing mechanism 13 includes a third base 131, a fourth base 132, a first positioning block 133 and a second positioning block 134, the third base 131 and the fourth base 132 are spaced apart on the bottom plate 10, the first positioning block 133 is arranged on the third base 131, the second positioning block 134 is arranged on the fourth base 132, and the first positioning block 133 and the second positioning block 134 are relatively spaced apart, and the first positioning block 133 and the second positioning block 134 can be inserted into the five-way joint 3 from the left and right sides. The device can simulate and determine the minimum distance between the tooth tip of the chainring and the lower fork 9 through the first scale 112, and simulate and determine the minimum distance between the left crank and the right crank and the left and right lower forks 9 respectively through the second scale 122 and the third scale 123. If any of the minimum distances is zero, it means that the lower fork 9 interferes with the normal operation of the chainring or the left crank or the right crank, affecting normal riding. If the three minimum distances are all greater than zero, it means that the lower fork 9 will not interfere with the normal operation of the chainring, the left crank and the right crank. The device can eliminate defective frames and prevent defective frames from entering the assembly line, thereby avoiding reducing the quality of bicycles, improving the yield rate and reducing production costs.

[0044] Optionally, the first detection mechanism 11 further includes a first locking member 113, one end of which can pass through the first base 111 and abut against the bottom plate 10, thereby fixing the position of the first base 111 and preventing the first base 111 from moving, thereby fixing the position of the gear disk.

[0045] Optionally, the second detection mechanism 12 further includes a second fixing seat 124 and a third fixing seat 125, the second fixing seat 124 and the third fixing seat 125 are respectively arranged at the two ends of the second base 121, the second fixing seat 124 is slidably mounted on the outer periphery of the second scale 122, and the third fixing seat 125 is slidably mounted on the outer periphery of the third scale 123, which can improve the stability of the second scale 122 and the third scale 123. Further, the second detection mechanism 12 further includes a third locking member 126, a fourth locking member 127 and a fifth locking member 128, one end of the third locking member 126 can pass through the second fixing seat 124 to abut against the second scale 122, one end of the fourth locking member 127 can pass through the third fixing seat 125 to abut against the third scale 123, and one end of the fifth locking member 128 can pass through the second base 121 to abut against the bottom plate 10.

[0046] Optionally, the detection device further includes a first slide rail 14, the first slide rail 14 is disposed on the bottom plate 10, and the first base 111 is slidably disposed on the first slide rail 14 to facilitate the movement of the first base 111. Further, the detection device further includes a first slider 17, the bottom of the first slider 17 is slidably connected to the first slide rail 14, and the top of the first slider 17 is fixedly connected to the first base 111.

[0047] Optionally, the detection device further includes a second slide rail 15, which is spaced apart and arranged in parallel with the first slide rail 14, and the two ends of the second base 121 are slidably connected to the first slide rail 14 and the second slide rail 15, respectively, which can facilitate the movement of the second base 121, improve the stability of the second base 121, and enable the two ends of the second base 121 to move synchronously. Further, the detection device further includes a second slider 18 and a third slider 19, the bottom of the second slider 18 is slidably connected to the first slide rail 14, the top of the second slider 18 is fixedly connected to the second base 121, the bottom of the third slider 19 is slidably connected to the second slide rail 15, and the top of the third slider 19 is fixedly connected to the second base 121.

[0048] Optionally, the first detection mechanism 11 further includes a first fixing seat 114 , one end of which is disposed on the first base 111 , and the other end of the first fixing seat 114 is slidably mounted on the outer periphery of the first scale 112 , thereby improving the stability of the first scale 112 .

[0049] Optionally, the first detection mechanism 11 further includes a second locking member 115, one end of which can pass through the first fixing seat 114 and abut against the first scale 112, thereby fixing the position of the first scale 112 to prevent the first scale 112 from moving, thereby fixing the position of the toothed disc.

[0050] Optionally, the fixing mechanism 13 further includes a driving member 135, the first positioning block 133 is slidably disposed on the third base 131, and the driving member 135 is configured to be able to drive the first positioning block 133 to approach or move away from the second positioning block 134. Specifically, the driving member 135 is disposed on the side wall of the third base 131, and the output end of the driving member 135 is inserted into the third base 131 and connected to the first positioning block 133, and the driving member 135 can drive the first positioning block 133 to approach or move away from the second positioning block 134, thereby achieving the fixing or loosening of the five-way joint 3. Further, the driving member 135 is a cylinder.

[0051] Optionally, the detection device further includes a support block 16, which is disposed on the bottom plate 10, and is located between the third base 131 and the fourth base 132, and the height of the support block 16 is lower than the height of the first positioning block 133 and the second positioning block 134. With such a configuration, when the frame is fixed, the support block 16 can support the five-way joint 3, so that the first positioning block 133 and the second positioning block 134 can be inserted into the five-way joint 3.

[0052] Optionally, the detection device also includes a fourth scale 20 and a fifth scale 21. The base plate 10 is provided with a positioning groove 101. The fourth scale 20 and the fifth scale 21 are parallel to and spaced apart from each other on the base plate 10. One end of the fourth scale 20 and the fifth scale 21 are flush with the positioning groove 101. The fourth scale 20 is close to the first base 111. The position of the first base 111 can be measured by the fourth scale 20 to determine the position of the gear disk. The fifth scale 21 is close to the second base 121. The position of the second base 121 can be measured by the fifth scale 21 to determine the positions of the left crank and the right crank.

[0053] Optionally, a positioning mechanism 22 is provided on the bottom plate 10 and is used to detect the center degree of the frame.

[0054] The present invention also provides a detection method, using the detection device in the above embodiment, the detection method comprises:

[0055] S1: According to the markings on the design drawing of the frame, the sliding first scale 112 is adjusted to the position marked on the drawing, the second locking member 115 is locked to fix the first scale 112, and then the first base 111 is slid to the position marked on the drawing according to the fourth scale 20, and the first locking member 113 is locked to fix the first base 111, so that the end of the first scale 112 represents the position of the tooth of the sprocket;

[0056] S2: According to the markings on the design drawing of the frame, the second scale 122 and the third scale 123 are adjusted to the positions marked on the drawing respectively, the third locking member 126 and the fourth locking member 127 are locked to fix the second scale 122 and the third scale 123, and then the second base 121 is slid to the position marked on the drawing according to the fifth scale 21, and the fifth locking member 128 is locked to fix the second base 121, so that the ends of the second scale 122 and the third scale 123 represent the positions of the left crank and the right crank respectively;

[0057] S3: Place the frame on the support block 16, drive the first positioning block 133 to approach the second positioning block 134 through the driving member 135, fix the five-way joint 3, and rotate the frame up and down. If the lower fork 9 contacts any one of the first scale 112, the second scale 122, and the third scale 123, it means that the lower fork 9 interferes with the normal operation of the chainring or the left crank or the right crank, and the frame is considered to be defective. The defective frame is removed for correction. If the lower fork 9 does not contact the first scale 112, the second scale 122, and the third scale 123, it means that the lower fork 9 will not interfere with the normal operation of the chainring, the left crank, and the right crank, and the frame is considered to be good.

[0058] S4: Perform other routine testing operations.

[0059] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A detection device, a frame comprising a front joint (1), a middle pipe joint (2), a five-way joint (3), a dropout (4), an upper tube (5), a lower tube (6), a middle tube (7), an upper fork (8) and a lower fork (9), wherein the front joint (1) is respectively connected to the upper tube (5) and the lower tube (6), the middle pipe joint (2) is respectively connected to the upper tube (5), the middle pipe (7) and the upper fork (8), the five-way joint (3) is respectively connected to the middle pipe (7), the lower tube (6) and the lower fork (9), the dropout (4) is respectively connected to the upper fork (8) and the lower fork (9), a sprocket is rotatably connected to the five-way joint (3), a left crank and a right crank are respectively connected to two sides of the sprocket, characterized in that: The detection device comprises: Bottom plate (10); A first detection mechanism (11), the first detection mechanism (11) comprising a first base (111) and a first scale (112), the first base (111) being slidably disposed on the bottom plate (10), the first scale (112) being slidably disposed on the first base (111), and the first scale (112) being capable of measuring the distance between the tooth tip of the toothed disc and the lower fork (9); A second detection mechanism (12), the second detection mechanism (12) comprising a second base (121), a second scale (122) and a third scale (123), the second base (121) being slidably disposed on the bottom plate (10), the second scale (122) and the third scale (123) being slidably disposed on two ends of the second base (121), respectively, the second scale (122) being capable of measuring the distance between the left crank and the lower fork (9), and the third scale (123) being capable of measuring the distance between the right crank and the lower fork (9); A fixing mechanism (13), the fixing mechanism (13) comprising a third base (131), a fourth base (132), a first positioning block (133) and a second positioning block (134), the third base (131) and the fourth base (132) being arranged at intervals on the bottom plate (10), the first positioning block (133) being arranged on the third base (131), the second positioning block (134) being arranged on the fourth base (132), and the first positioning block (133) and the second positioning block (134) being arranged at intervals relative to each other, and the first positioning block (133) and the second positioning block (134) being capable of being inserted into the five-way joint (3) from left and right sides.

2. A detection device according to claim 1, characterized in that: The first detection mechanism (11) further comprises a first locking member (113), one end of which is capable of passing through the first base (111) and abutting against the bottom plate (10).

3. A detection device according to claim 1, characterized in that: The second detection mechanism (12) further comprises a second fixed seat (124) and a third fixed seat (125), wherein the second fixed seat (124) and the third fixed seat (125) are respectively arranged at two ends of the second base (121), the second fixed seat (124) is slidably mounted on the outer periphery of the second scale (122), and the third fixed seat (125) is slidably mounted on the outer periphery of the third scale (123).

4. A detection device according to claim 1, characterized in that: The detection device further comprises a first slide rail (14), wherein the first slide rail (14) is arranged on the bottom plate (10), and the first base (111) is slidably arranged on the first slide rail (14).

5. A detection device according to claim 4, characterized in that: The detection device further comprises a second slide rail (15), the second slide rail (15) being spaced apart from and arranged in parallel with the first slide rail (14), and the two ends of the second base (121) being slidably connected to the first slide rail (14) and the second slide rail (15) respectively.

6. A detection device according to claim 1, characterized in that: The first detection mechanism (11) further comprises a first fixing seat (114), one end of the first fixing seat (114) being arranged on the first base (111), and the other end of the first fixing seat (114) being slidably sleeved on the outer periphery of the first scale (112).

7. A detection device according to claim 6, characterized in that: The first detection mechanism (11) further comprises a second locking member (115), one end of which is capable of passing through the first fixing seat (114) and abutting against the first scale (112).

8. A detection device according to claim 1, characterized in that: The fixing mechanism (13) further comprises a driving member (135), the first positioning block (133) being slidably disposed on the third base (131), and the driving member (135) being configured to be able to drive the first positioning block (133) to approach or move away from the second positioning block (134).

9. A detection device according to claim 8, characterized in that: The detection device further comprises a support block (16), wherein the support block (16) is arranged on the bottom plate (10), the support block (16) is located between the third base (131) and the fourth base (132), and the height of the support block (16) is lower than the heights of the first positioning block (133) and the second positioning block (134).

10. A detection method, characterized in that: Using the detection device as described in any one of claims 1 to 9, the detection method comprises: S1: adjusting the first scale (112) to a preset position, and then sliding the first base (111) to a preset position; S2: adjusting the second scale (122) and the third scale (123) to preset positions respectively, and then sliding the second base (121) to the preset position; S3: Fix the five-way joint (3) by means of the first positioning block (133) and the second positioning block (134), rotate the frame, and if the lower fork (9) contacts any one of the first scale (112), the second scale (122) and the third scale (123), the frame is considered to be defective and the frame is discarded for correction; if the lower fork (9) does not contact any of the first scale (112), the second scale (122) and the third scale (123), the frame is considered to be good; S4: Perform routine testing operations.

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