A testing equipment for instrument production

Abstract

The present application discloses a testing device for instrument production, which belongs to the field of constant pressure testing of instruments, and includes a testing platform, a first clamping block is fixed on the top of the testing platform, a first slot is provided on the first clamping block, a second clamping block controlled by a hydraulic press is installed on the testing platform, a second slot is provided on the second clamping block, a constant pressure hydraulic telescopic rod is fixed to the top of the first clamping block through a rotatable L-shaped bracket, and a pressure head assembly is installed on the bottom extension rod of the constant pressure hydraulic telescopic rod. The present application sets a pressure head assembly, controls the upward movement of the cylindrical rod by rotating the threaded nut block, and synchronously squeezes the movable rod to expand through multiple push rods on the cylindrical rod, thereby changing the contact area between the pressure head assembly and the detection member, and realizes multiple batches of fracturing tests in different states by changing the contact area, so that the detection range is wider and the authenticity of the detection data is stronger.

Description

Technical Field

[0001] The present application relates to the field of constant pressure detection of instruments and meters, and in particular, to a detection device for the production of instruments and meters. Background Art

[0002] Instruments are devices or equipment used to detect, measure, observe and calculate various physical quantities, material components, physical parameters, etc. When testing test parts, human senses are often not sufficient to perceive them. Instruments have the ability to improve, expand or supplement human functions, but instruments are too inefficient when testing test parts, and it is easy to confuse defective products with good products.

[0003] Chinese patent CN112504842A published on March 16, 2021 discloses an instrument fracturing detection device, in which a pressure piece of a single structure is used as a pressure-applying structure. The contact area with the detection piece during the pressure-applying process is single, resulting in a smaller range of tests. If the contact area needs to be changed, the specifications of the pressure piece need to be changed, which is very time-consuming and has low detection efficiency. Summary of the invention

[0004] The present invention solves the problem that a single-structure pressure piece is used as a pressure-applying structure in the prior art, and the contact area with the detection piece during the pressure-applying process is single, resulting in a small range of testing. If the contact area needs to be changed, the specification of the pressure piece needs to be changed, which is very time-consuming and has low detection efficiency. To this end, the present invention proposes a detection device for instrument production, which can quickly adjust the contact area with the detection piece without replacing the pressure piece.

[0005] To achieve the above-mentioned purpose, the present application provides a testing device for instrument production, including a testing platform, a first clamping block is fixed on the top of the testing platform, a first clamping block is provided with a first slot, a second clamping block controlled by a hydraulic press is mounted on the testing platform, a second clamping block is provided with a second slot, a constant-pressure hydraulic telescopic rod is fixed to the top of the first clamping block through a rotatable L-shaped bracket, and a pressure head assembly is mounted on the bottom extension rod of the constant-pressure hydraulic telescopic rod;

[0006] The pressure head assembly includes a connecting rod fixed at the bottom of the constant pressure hydraulic telescopic rod extension rod, a hollow elastic soft plate is fixed to the bottom of the connecting rod, a threaded rod is fixed to the middle end of the bottom of the connecting rod, a plurality of movable rods are hinged at the bottom of the threaded rod, the external thread of the threaded rod is connected to a threaded nut block, the top of the threaded nut block is slidably connected to two sliders, a cylindrical rod is fixed between the two sliders, a connecting rod is penetrated through the inside of the threaded rod and slidably connected, a plurality of push rods are fixed to the outside of the connecting rod, the connecting rod is penetrated and fixedly connected to the cylindrical rod, and a special-shaped limiting plug is fixed to the bottom of the slider.

[0007] Preferably, the end of the top rod close to the movable rod is rotatably connected to a first rubber wheel, the top rod and the movable rod are each provided with eight corresponding ones, and the bottom of the movable rod is rotatably connected to a second rubber wheel. The provision of the first rubber wheel can reduce the friction between the top rod and the movable rod, and the provision of the second rubber wheel can reduce the friction loss between the movable rod and the hollow elastic soft plate.

[0008] Preferably, the bottom of the special-shaped limit rod is set to eight inclined surfaces, and the eight inclined surfaces at the bottom of the special-shaped limit rod respectively correspond to the eight movable rods. The setting of the special-shaped limit rod in the present application can limit the rotation of the movable rod through the eight inclined surfaces at its bottom, thereby achieving a positioning effect.

[0009] Preferably, the slider is slidably connected inside the threaded rod, and the bottom protrusion of the slider is slidably connected to the top slot of the threaded nut block. The design of the slider being slidably connected inside the threaded rod can ensure that the slider moves straight up and down, thereby ensuring the movement trajectory of the special-shaped limit rod.

[0010] Preferably, the side of the second clamping block is equipped with an auxiliary clamping assembly, which includes two auxiliary clamping plates symmetrically slidably connected to the side of the second clamping block, a four-way hydraulic chamber fixed to the side of the second clamping block, a third slot is provided on the side of the auxiliary clamping plate, the two bottom ports of the four-way hydraulic chamber are piston-slidingly connected to the first hydraulic rod, the two top ports of the four-way hydraulic chamber are piston-slidingly connected to the second hydraulic rod, two pressure rods are hinged on the opposite side of the two second hydraulic rods, the two pressure rods are rotatably connected to the third rubber wheel, and a spring sheet is fixed between each two pressure rods. When the second clamping block slides to clamp the detection piece, the two first hydraulic rods will be squeezed, so that the two second hydraulic rods extend out, and the two auxiliary clamping plates are synchronously pushed to move toward each other through the pressure rods, and the detection piece is formed into a four-corner clamping state by cooperating with the first clamping block and the second clamping block, which simulates the state of the detection piece when it is installed on the instrument to the greatest extent, thereby improving the accuracy of the detection.

[0011] Preferably, the auxiliary clamp is slidably connected to the top of the four-way hydraulic bin, and the sides of the two auxiliary clamps are provided with track grooves, and the two track grooves are provided with arc grooves, and the third rubber wheel is slidably connected in the track grooves. In the initial state, the third rubber wheel is located in the arc groove, and when the pressure rod applies pressure, it pushes the auxiliary clamp to move, and when the auxiliary clamp contacts the detection part, in order to prevent over-clamping, the third rubber wheel will slide in the track groove to release excess pressure.

[0012] Preferably, the two auxiliary clamps are equipped with auxiliary extrusion components, which include a pneumatic pipe fixed inside the auxiliary clamp, one end of which is connected to and fixed with an elastic bladder, and the other end of which is connected to an expansion bladder. When the elastic bladder is squeezed, the gas inside it will enter the expansion bladder through the pneumatic pipe, causing it to expand, thereby achieving an auxiliary clamping effect.

[0013] Preferably, the elastic bladder is located outside the auxiliary splint, and the expansion bladder is located at the top end of the inner wall of the third slot.

[0014] The benefits of this application are:

[0015] (1) The present application sets a pressure head assembly, controls the upward movement of the connecting rod by rotating the threaded nut block, and synchronously squeezes the movable rod to expand through multiple push rods on the connecting rod, thereby changing the contact area between the pressure head assembly and the detection piece. By changing the contact area, multiple batches of fracturing tests in different states can be achieved, so that the detection range is wider and the authenticity of the detection data is stronger.

[0016] (2) In the auxiliary clamping assembly of the present application, when the second clamping block slides to clamp the detection part, the two first hydraulic rods will be squeezed, thereby extending the two second hydraulic rods, and synchronously pushing the two auxiliary clamping plates to move toward each other through the pressure rods. By cooperating with the first clamping block and the second clamping block, a four-corner clamping state is formed for the detection part, which simulates the state of the detection part when it is installed on the instrument to the greatest extent, thereby improving the accuracy of the detection.

[0017] (3) The present application provides auxiliary squeezing components in both auxiliary splints. When the elastic bladder is squeezed, the internal gas will enter the expansion bladder through the air pressure pipe, causing it to expand, thereby achieving an auxiliary clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention as a whole;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention as a whole;

[0021] Figure 3 It is a schematic diagram of the connection structure between the constant pressure hydraulic telescopic rod and the pressure head assembly of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the pressure head assembly of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the pressure head assembly of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the pressure head assembly of the present invention;

[0025] Figure 7 The present invention Figure 6 Enlarged view of point A in the middle;

[0026] Figure 8 It is a structural schematic diagram of the special-shaped limiting plug rod of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the auxiliary clamping assembly of the present invention;

[0028] Fig.10 It is a structural schematic diagram of the auxiliary clamping assembly of the present invention;

[0029] Fig.11 It is a structural schematic diagram of the auxiliary clamping assembly of the present invention;

[0030] Fig.12 It is a structural schematic diagram of the auxiliary splint of the present invention;

[0031] Fig.13 It is a structural schematic diagram of the auxiliary extrusion assembly of the present invention.

[0032] In the above figure,

[0033] 100, testing platform; 200, first clamping block; 210, first slot; 300, second clamping block; 310, second slot; 400, L-shaped bracket; 500, constant pressure hydraulic telescopic rod;

[0034] 600, pressure head assembly; 610, connecting rod; 620, hollow elastic soft plate; 630, threaded rod; 640, threaded nut block; 650, movable rod; 651, second rubber wheel; 660, connecting rod; 670, push rod; 671, first rubber wheel; 680, slider; 690, cylindrical rod; 6100, special-shaped limit rod;

[0035] 700, auxiliary clamping assembly; 710, auxiliary clamping plate; 711, track groove; 712, arc groove; 713, third clamping groove; 720, four-way hydraulic warehouse; 730, first hydraulic rod; 740, second hydraulic rod; 750, pressure rod; 760, third rubber wheel;

[0036] 770. Auxiliary extrusion assembly; 771. Air pressure pipe; 772. Elastic bladder; 773. Expansion bladder. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0039] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0040] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0041] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] Example 1

[0044] See also Figure 1-Figure 8 The present embodiment provides a testing device for instrument production, including a testing platform 100, a first clamping block 200 is fixed on the top of the testing platform 100, a first clamping block 200 is provided with a first slot 210, a second clamping block 300 controlled by a hydraulic press is mounted on the testing platform 100, a second clamping block 300 is provided with a second slot 310, a constant pressure hydraulic telescopic rod 500 is fixed to the top of the first clamping block 200 through a rotatable L-shaped bracket 400, and a pressure head assembly 600 is mounted on the bottom extension rod of the constant pressure hydraulic telescopic rod 500;

[0045] The pressure head assembly 600 includes a connecting rod 610 fixed to the bottom of the extension rod of the constant pressure hydraulic telescopic rod 500, a hollow elastic soft plate 620 is fixed to the bottom of the connecting rod 610, a threaded rod 630 is fixed to the middle end of the bottom of the connecting rod 610, a plurality of movable rods 650 are hinged at the bottom of the threaded rod 630, and a second rubber wheel 651 is rotatably connected to the bottom of the movable rod 650. The setting of the second rubber wheel 651 can reduce the friction loss between the movable rod 650 and the hollow elastic soft plate 620, the external thread of the threaded rod 630 is connected to a threaded nut block 640, and the top of the threaded nut block 640 is slidably connected to two sliders 680, a cylindrical rod 690 is fixed between the two sliders 680, the slider 680 is slidably connected to the inside of the threaded rod 630, and the bottom protrusion of the slider 680 is slidably connected to the top sliding groove of the threaded nut block 640, the inside of the threaded rod 630 is penetrated and slidably connected to a connecting rod 660, and the connecting rod 660 0 is fixed with a plurality of push rods 670 on the outside, and one end of the push rod 670 close to the movable rod 650 is rotatably connected with a first rubber wheel 671, and the push rod 670 and the movable rod 650 are each provided with eight and corresponding to each other, and the provision of the first rubber wheel 671 can reduce the friction between the push rod 670 and the movable rod 650, the linkage rod 660 and the cylindrical rod 690 are penetrated and fixedly connected, and the bottom of the slider 680 is fixed with a special-shaped limit rod 6100, and the special-shaped limit rod 6100 is fixed with a special-shaped limit rod 6100. 0 is set with eight inclined surfaces at the bottom, and the eight inclined surfaces at the bottom of the special-shaped limiting plug rod 6100 correspond to the eight movable rods 650 respectively. The setting of the special-shaped limiting plug rod 6100 can limit the rotation of the movable rod 650 through the eight inclined surfaces at the bottom thereof, thereby achieving a positioning effect. At the same time, the design of the slider 680 slidingly connected inside the threaded rod 630 can ensure the straight up and down movement trajectory of the slider 680, thereby ensuring the movement trajectory of the special-shaped limiting plug rod 6100. The setting of the pressure head assembly 600 controls the upward movement of the linkage rod 660 by rotating the threaded nut block 640, and the multiple push rods 670 on the linkage rod 660 are used to synchronously squeeze the movable rod 650 to expand, thereby changing the contact area between the pressure head assembly 600 and the detection member. By changing the contact area, multiple batches of fracturing tests in different states can be realized, so that the detection range is wider and the authenticity of the detection data is stronger.

[0046] When the above device is used, the instrument glass to be tested is first placed in the first slot 210 of the first clamping block 200, and then the second clamping block 300 is controlled to move by the hydraulic press, and the instrument glass to be tested is clamped and fixed by the second slot 310 on the side of the second clamping block 300 and the first slot 210 of the first clamping block 200. At this time, the constant pressure hydraulic telescopic rod 500 controls the pressure head assembly 600 to move downward as a whole, and a constant pressure is applied to the test piece to perform the test. Figure 4In the state, since the eight movable rods 650 are relatively concentrated, it is equivalent to a single-point extrusion test state. After a certain period of constant pressure test, if the test piece does not crack or break, the test piece preliminarily passes the single-point constant pressure test;

[0047] When performing multi-point constant pressure detection, the threaded nut block 640 is rotated to move on the threaded rod 630. Since the slider 680 and the threaded nut block 640 are in a sliding connection state, the threaded nut block 640 will drive the two sliders 680 to move upward when moving upward. At this time, the cylindrical rod 690 fixed between the two sliders 680 will drive the linkage rod 660 to move upward. At this time, the multiple push rods 670 set on the linkage rod 660 move upward, and the movable rod 650 is squeezed by the first rubber wheel 671. At this time, the movable rod 650 squeezes the hollow elastic soft plate through the second rubber wheel 651. 620, so that its bottom is in a flat state. At the same time, due to the upward movement of the slider 680, the special-shaped limit rod 6100 moves upward, giving the movable rod 650 a movable space. At this time, the constant pressure hydraulic telescopic rod 500 controls the pressure head assembly 600 to move downward as a whole, and applies a constant pressure to the detection piece for detection. At this time, the second rubber wheel 651 at the bottom of the eight unfolded movable rods 650 is used as a contact point to achieve the effect of multi-point pressure application. After a certain period of constant pressure pressure detection, when the detection piece has no cracks or fragments, the detection piece passes the multi-point constant pressure pressure detection;

[0048] It is worth noting that in the present application, the rotation angle of the movable rod 650 is controlled by the threaded nut block 640, so the multi-angle constant pressure detection at different positions can be changed according to the detection requirements.

[0049] See also Figure 1 , Figure 2 , Figure 9-12The side of the second clamping block 300 is equipped with an auxiliary clamping assembly 700, and the auxiliary clamping assembly 700 includes two auxiliary clamping plates 710 symmetrically slidably connected to the side of the second clamping block 300, and a four-way hydraulic chamber 720 fixed to the side of the second clamping block 300. A spring is fixed between the auxiliary clamping plate 710 and the outer wall of the four-way hydraulic chamber 720. A third slot 713 is opened on the side of the auxiliary clamping plate 710. The first hydraulic rod 730 is slidably connected to the two bottom ports of the four-way hydraulic chamber 720 by pistons, and the top two ports of the four-way hydraulic chamber 720 are slidably connected to the two first hydraulic rods 730 by pistons. There is a second hydraulic rod 740, and two pressure rods 750 are hinged on the opposite sides of the two second hydraulic rods 740. The two pressure rods 750 are rotatably connected to the third rubber wheel 760. When the second clamping block 300 slides to clamp the detection part, the two first hydraulic rods 730 will be squeezed, so that the two second hydraulic rods 740 are extended, and the two auxiliary clamps 710 are synchronously pushed toward each other by the pressure rods 750. By cooperating with the first clamping block 200 and the second clamping block 300, a four-corner clamping state is formed for the detection part, which simulates the state of the detection part when it is installed on the instrument to the greatest extent, thereby improving the accuracy of the detection. The auxiliary splint 710 is slidably connected to the top of the four-way hydraulic warehouse 720. The sides of the two auxiliary splints 710 are provided with track grooves 711. The two track grooves 711 are provided with arc grooves 712. The third rubber wheel 760 is slidably connected in the track groove 711. A spring piece is fixed between every two pressure rods 750. In the initial state, the third rubber wheel 760 is located in the arc groove 712. When the pressure rod 750 applies pressure, it will push the auxiliary splint 710 to move. When the auxiliary splint 710 contacts the detection part, in order to prevent excessive clamping, the third rubber wheel 760 will slide in the track groove 711, and the two pressure rods 750 will rotate to both sides to release excess pressure.

[0050] When the auxiliary clamping assembly 700 is used, when the second clamping block 300 moves, the two first hydraulic rods 730 in the four-way hydraulic chamber 720 will contact the first clamping block 200 and be pushed and gathered by the first clamping block 200. At this time, the liquid pressure in the four-way hydraulic chamber 720 increases, and the two second hydraulic rods 740 are extended by the action of the liquid pressure. The second hydraulic rods 740 push the auxiliary clamping plates 710 to move toward each other through the two pressure rods 750, and the detection piece is auxiliary clamped through the third clamping grooves 713 provided on the two auxiliary clamping plates 710.

[0051] Since the inspection pieces are of different sizes, in order to prevent over-clamping, when the auxiliary clamping plate 710 contacts the inspection piece, the third rubber wheel 760 will slide in the track groove 711, and the two pressure rods 750 will rotate to both sides to release excess pressure, thereby minimizing the pressure on the auxiliary clamping plate 710.

[0052] See also Figure 1 , Fig.12 , Fig.13 The two auxiliary splints 710 are internally equipped with an auxiliary extrusion assembly 770, and the auxiliary extrusion assembly 770 includes an air pressure pipe 771 fixed inside the auxiliary splint 710, one end of the air pressure pipe 771 is connected to and fixed with an elastic sac 772, and the other end of the air pressure pipe 771 is connected to an expansion sac 773, the elastic sac 772 is located outside the auxiliary splint 710, and the expansion sac 773 is located at the top of the inner wall of the third slot 713. When the elastic sac 772 is squeezed, the internal gas will enter the expansion sac 773 through the air pressure pipe 771, causing it to expand, thereby achieving an auxiliary clamping effect.

[0053] When the auxiliary extrusion assembly 770 is in use, after the auxiliary splint 710 contacts the first clamping block 200, the elastic bladder 772 is squeezed, and the gas inside it enters the expansion bladder 773 through the air pressure pipe 771, causing it to expand, thereby achieving the effect of auxiliary clamping.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A testing device for instrument production, comprising a testing platform (100), a first clamping block (200) being fixed at the top of the testing platform (100), a first clamping block (200) being provided with a first slot (210), a second clamping block (300) being mounted on the testing platform (100) and controlled by a hydraulic press, a second clamping block (300) being provided with a second slot (310), a constant pressure hydraulic telescopic rod (500) being fixed at the top of the first clamping block (200) via a rotatable L-shaped bracket (400), a pressure head assembly (600) being mounted on the bottom extension rod of the constant pressure hydraulic telescopic rod (500); It is characterized in that The pressure head assembly (600) includes a connecting rod (610) fixed at the bottom of the extension rod of the constant pressure hydraulic telescopic rod (500), a hollow elastic soft plate (620) is fixed at the bottom of the connecting rod (610), a threaded rod (630) is fixed at the middle end of the bottom of the connecting rod (610), a plurality of movable rods (650) are hinged at the bottom of the threaded rod (630), a second rubber wheel (651) is rotatably connected to the bottom of the movable rod (650), the outer thread of the threaded rod (630) is connected to a threaded nut block (640), and the top of the threaded nut block (640) is slidably connected to a slider (68 0), there are two sliders (680), a cylindrical rod (690) is fixed between the two sliders (680), the slider (680) is slidably connected to the inside of the threaded rod (630), and the bottom protrusion of the slider (680) is slidably connected to the top sliding groove of the threaded nut block (640); a connecting rod (660) penetrates and is slidably connected to the inside of the threaded rod (630), a plurality of top rods (670) are fixed to the outside of the connecting rod (660), the connecting rod (660) penetrates and is fixedly connected to the cylindrical rod (690), and a special-shaped limiting plug rod (6100) is fixed to the bottom of the slider (680); One end of the top rod (670) close to the movable rod (650) is rotatably connected to a first rubber wheel (671); eight of the top rod (670) and the movable rod (650) are provided and correspond to each other; and the bottom of the movable rod (650) is rotatably connected to a second rubber wheel (651); The bottom of the special-shaped limiting insertion rod (6100) is arranged as eight inclined surfaces, and the eight inclined surfaces at the bottom of the special-shaped limiting insertion rod (6100) respectively correspond to the eight movable rods (650); The side of the second clamping block (300) is equipped with an auxiliary clamping assembly (700), and the auxiliary clamping assembly (700) includes two auxiliary clamping plates (710) symmetrically slidably connected to the side of the second clamping block (300), and a four-way hydraulic chamber (720) fixed to the side of the second clamping block (300). The side of the auxiliary clamping plate (710) is provided with a third clamping groove (713). The two bottom ports of the four-way hydraulic chamber (720) are both piston-slidably connected to the first hydraulic rod (730), and the two top ports of the four-way hydraulic chamber (720) are both piston-slidably connected to the second hydraulic rod (740). Two pressure rods (750) are hinged on opposite sides of the two second hydraulic rods (740), and the two pressure rods (750) are rotatably connected to the third rubber wheel (760), and a spring sheet is fixed between each two pressure rods (750); The auxiliary clamping plate (710) is slidably connected to the top of the four-way hydraulic warehouse (720), the sides of the two auxiliary clamping plates (710) are provided with track grooves (711), the two track grooves (711) are provided with arc grooves (712), and the third rubber wheel (760) is slidably connected in the track grooves (711); An auxiliary extrusion assembly (770) is installed inside the two auxiliary splints (710), and the auxiliary extrusion assembly (770) includes an air pressure pipe (771) fixed inside the auxiliary splint (710), one end of the air pressure pipe (771) is connected to and fixed with an elastic bladder (772), and the other end of the air pressure pipe (771) is connected to an expansion bladder (773); When the instrument production testing device is used, the instrument glass to be tested is first placed in the first clamping groove (210) of the first clamping block (200), and then the second clamping block (300) is controlled to move by a hydraulic press, and the instrument glass to be tested is clamped and fixed by the second clamping groove (310) on the side of the second clamping block (300) cooperating with the first clamping groove (210) of the first clamping block (200). At this time, the pressure head assembly (600) is controlled to move downward as a whole by the constant pressure hydraulic telescopic rod (500), and a constant pressure is applied to the test piece to perform the test. The eight movable rods (650) are relatively concentrated, which is equivalent to a single-point extrusion test state. When performing multi-point constant pressure detection, the threaded nut block (640) is rotated to move on the threaded rod (630). Since the slider (680) and the threaded nut block (640) are in a sliding connection state, the threaded nut block (640) will drive the two sliders (680) to move upward when moving upward. At this time, the cylindrical rod (690) fixed between the two sliders (680) will drive the linkage rod (660) to move upward. At this time, the multiple push rods (670) provided on the linkage rod (660) move upward, and the movable rod (650) is squeezed by the first rubber wheel (671). At this time, The movable rod (650) squeezes the hollow elastic soft plate (620) through the second rubber wheel (651), so that its bottom is in a flat state. At the same time, due to the upward movement of the slider (680), the special-shaped limit rod (6100) moves upward, giving the movable rod (650) room to move. At this time, the constant pressure hydraulic telescopic rod (500) is used again to control the pressure head assembly (600) to move downward as a whole, and a constant pressure is applied to the detection part for detection. At this time, the second rubber wheels (651) at the bottom of the eight unfolded movable rods (650) are used as contact points to achieve a multi-point pressure effect.

2. The instrument production testing equipment according to claim 1, characterized in that: The slider (680) is slidably connected inside the threaded rod (630), and the bottom protrusion of the slider (680) is slidably connected to the top sliding groove of the threaded nut block (640).

3. The instrument production testing equipment according to claim 2, characterized in that: The elastic sac (772) is located outside the auxiliary splint (710), and the expansion sac (773) is located at the top end of the inner wall of the third clamping groove (713).

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