A hydraulic cylinder strength testing device

Abstract

The present invention relates to the technical field of hydraulic cylinders, and in particular to a hydraulic cylinder strength detection device, including a bracket and a base, etc.; a first slide groove is provided on the lower side of the bracket; and a base is slidably connected to the first slide groove. The present invention realizes: in the process of the hydraulic cylinder pushing the horizontal plate upward, by detecting the real-time driving force of the piston rod on the pressure sensor, it is judged whether the hydraulic cylinder can be extended synchronously; at the same time, it is reflected in real time whether the force of each piston rod on the horizontal plate is basically consistent, so as to improve the accuracy of synchronous detection; when it is found that the hydraulic cylinders under detection are not extended synchronously, it means that these hydraulic cylinders cannot be used for synchronous operation test, and at this time, other hydraulic cylinders need to be replaced for synchronous detection. When it is detected that multiple hydraulic cylinders are extended synchronously, the hydraulic cylinders are then subjected to strength detection to avoid multiple hydraulic cylinders being unable to be extended synchronously during synchronous operation, resulting in only part of the hydraulic cylinders being stressed, and the use strength of each hydraulic cylinder cannot be truly detected.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, and in particular to a hydraulic cylinder strength detection device. Background Art

[0002] The hydraulic cylinder is a key component in the hydraulic system. It converts hydraulic energy into mechanical energy to achieve linear reciprocating motion or swinging. In scenarios such as heavy lifting, horizontal movement of large mechanical arms or platforms, in order to ensure smooth and synchronous operation, dual-cylinder synchronization technology is used to coordinate the actions of two or more drive units. Therefore, it is necessary to perform synchronous detection on two or even more hydraulic cylinders.

[0003] In the prior art, when performing synchronous detection on multiple hydraulic cylinders, displacement sensors are usually installed on the piston rods of the hydraulic cylinders; and then the extension status of each piston rod in each cylinder is monitored in real time to check whether the hydraulic cylinders are working synchronously. However, when performing synchronous detection, only the synchronization of the hydraulic cylinders in the no-load state is often tested, which is inconsistent with the actual usage scenario; and when the hydraulic cylinders are detected under the load state, only the extension status of the piston rod can be reflected by the displacement sensor; it is impossible to reflect the force of each piston rod on the load object in real time; therefore, it is difficult to truly reflect the usage intensity of each hydraulic cylinder. Summary of the invention

[0004] In order to overcome the shortcomings in the prior art that when performing synchronization detection on hydraulic cylinders, only the synchronization of the hydraulic cylinders in a no-load state is often tested, which is inconsistent with the actual usage scenario; and when the hydraulic cylinders are detected under a loaded state, it is impossible to reflect in real time the force of each piston rod on the load object; therefore, it is difficult to truly reflect the usage intensity of each hydraulic cylinder, the present invention provides a hydraulic cylinder strength detection device.

[0005] The technical implementation scheme of the present invention is: a hydraulic oil cylinder strength detection device, including a bracket, a base, a cross plate and an oil pipe; a first slide groove is provided on the lower side of the bracket; the first slide groove is slidably connected to the base; the bracket is provided with a slide rail; the slide rail is slidably connected to the cross plate; and a hydraulic push rod is fixedly connected to the upper side of each slide rail, and the telescopic end of the hydraulic push rod is fixedly connected to the cross plate; a plurality of oil pipes are connected to the bracket; it also includes a rotating ring, a fixed ring, a first slider, a pressure sensor, a fixed block, a pressure block, a fixing bolt, a nut and a quick-release assembly; each base is rotatably connected to a rotating ring; each The rotating rings are all fixedly connected with fixing rings for fixing the hydraulic cylinders; a number of second sliding grooves are provided on the horizontal plate; a number of first sliding blocks are slidably connected to all the second sliding grooves; a pressure sensor for testing a number of hydraulic cylinders is fixedly connected to the lower side of each first sliding block; a quick-release assembly is connected to each first sliding block; a number of fixing blocks are connected to the quick-release assembly; two left-right symmetrical through grooves are provided on the fixing block; a fixing bolt is slidably connected to the two through grooves; a nut is fixedly connected to the left side of the fixing bolt; a pressure block is fixedly connected to the upper side of the fixing block; the pressure block is located directly below the pressure sensor.

[0006] Furthermore, the quick-release assembly includes a second slider and a third slider; each first slider is detachably connected to the second slider; two third sliding grooves symmetrical front and rear are provided on the cross plate; each second slider slides in the corresponding third sliding groove; a fourth sliding groove is provided on the lower side of each second slider; a third slider is slidably connected in each fourth sliding groove; a fixed block is commonly fixed to the lower side of the third slider connected to the same first slider.

[0007] Furthermore, each first slider is provided with a plurality of slots on the front side and the rear side; and each second slider is provided with a plurality of blocks on the side facing the first slider.

[0008] Furthermore, a first scale mark is arranged on the lower side of the bracket; the first scale mark is located in front of the first slide slot; an alignment slot is arranged on the front side of the base; and a second scale mark is arranged on the upper side of the horizontal plate.

[0009] Furthermore, it also includes an electromagnet; each base is fixedly connected to an electromagnet; each electromagnet is provided with a switch handle, and the lower side of the rotating ring is in contact with the electromagnet.

[0010] Furthermore, a locker is also included; the upper side of each first sliding block is fixedly connected with a locker.

[0011] Furthermore, it also includes an electric push rod and an internal support assembly; an electric push rod is fixedly connected to the right side of each fixing bolt; the output end of each electric push rod slides in the corresponding fixing bolt; and the middle part of each fixing bolt is connected to an internal support assembly for adapting to hydraulic cylinder piston rod connecting sleeves of different sizes.

[0012] Furthermore, the internal support assembly includes a sliding rod, an internal support plate and a connecting rod; a fifth sliding groove is opened in each fixing bolt; a sliding rod is fixedly connected to each output end; each sliding rod slides in the corresponding fifth sliding groove; each sliding rod is fixedly connected to the corresponding fixing bolt with a plurality of connecting rods; and an internal support plate is fixedly connected to each connecting rod.

[0013] Furthermore, the contact surface between the inner support plate and the hydraulic cylinder piston rod connector is a rough surface.

[0014] Furthermore, it also includes a correction block; each fixed block is slidably connected to a correction block on the left and right sides; each correction block is on the outside of the corresponding through slot.

[0015] The present invention has the following advantages: the present invention realizes: in the process of the hydraulic cylinder pushing the cross plate upward, by detecting the real-time pushing force of the piston rod on the pressure sensor, it is judged whether the hydraulic cylinder can realize synchronous extension; at the same time, it is reflected in real time whether the force of each piston rod on the cross plate is basically consistent, thereby improving the accuracy of synchronous detection; when it is found that the hydraulic cylinders under detection are not synchronously extended, it means that these hydraulic cylinders cannot be used for synchronous operation test, and at this time, other hydraulic cylinders need to be replaced for synchronous detection, and when it is detected that multiple hydraulic cylinders are synchronously extended, the strength of the hydraulic cylinders can be tested at this time, so as to avoid the situation that multiple hydraulic cylinders cannot be synchronously extended during synchronous operation, resulting in only part of the hydraulic cylinders being stressed, and the use strength of each hydraulic cylinder cannot be truly detected;

[0016] The hydraulic cylinder with the connecting sleeve is connected to the cross plate through the fixing block, fixing bolt and nut to simulate the real use scenario; at the same time, the coaxiality of each connecting sleeve through hole is ensured; then the hydraulic cylinder with the connecting sleeve is synchronously tested, so that not only the normal hydraulic cylinder can be tested, but also the hydraulic cylinder with the connecting sleeve can be tested, which improves the adaptability of the testing equipment; and the fixing block, fixing bolt and nut can be quickly installed and removed through the quick-release assembly, which improves the testing efficiency;

[0017] The inner support assembly is used to make the fixing bolt adapt to the sizes of different connecting sleeves, thereby solving the disadvantage that when detecting connecting sleeves of different sizes, it is necessary to find a fixing bolt that matches them; at the same time, when installing the fixing bolt and the nut, the two correction blocks are squeezed toward the connecting sleeve; the connecting sleeve is corrected so that the connecting sleeve is located in the middle of the fixing block, thereby ensuring the coaxiality of each connecting sleeve; thereby, the inner support plate can be completely in contact with the inner wall of the through hole of the connecting sleeve after internal support; at the same time, the correction block also becomes a gasket between the nut and the electric push rod and the fixing block, thereby preventing the nut from loosening due to excessive force when the hydraulic cylinder is working; and the fixing effect between the fixing bolt and the fixing block is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of a hydraulic cylinder strength detection device of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the base, electromagnet and rotating ring combination of the present invention;

[0020] Figure 3 It is a schematic diagram of the combined three-dimensional structure of the horizontal plate, the first sliding block and the quick-release assembly of the present invention;

[0021] Figure 4 An exploded view of the quick-release assembly of the present invention;

[0022] Figure 5 is a cross-sectional view of a fixing block of the present invention;

[0023] Figure 6 It is a schematic diagram of the combined three-dimensional structure of the fixing block, the fixing bolt and the inner support assembly of the present invention;

[0024] Figure 7 It is a cross-sectional view of the fixing bolt of the present invention.

[0025] In the above drawings: 1- bracket, 1001- first slide, 1002- slide rail, 1003- first scale, 2- base, 2001- alignment groove, 3- horizontal plate, 3001- second scale, 3002- second slide, 3003- third slide, 4- oil pipe, 101- electromagnet, 102- rotating ring, 103- fixed ring, 104- first slider, 10401- slot, 105- lock, 106- second slider, 1 0601-block, 10602-fourth slide, 107-pressure sensor, 108-third slide, 201-fixed block, 20101-through slot, 202-pressure block, 203-correction block, 204-electric push rod, 20401-output end, 205-fixing bolt, 20501-fifth slide, 206-nut, 207-slide rod, 208-inner support plate, 209-connecting rod, 555-hydraulic cylinder, 666-connecting sleeve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0027] A hydraulic cylinder 555 strength detection device, such as Figure 1-Figure 5As shown, it includes a bracket 1, a base 2, a cross plate 3 and an oil pipe 4; a first slide groove 1001 is opened at the lower side of the bracket 1; the base 2 is slidably connected to the first slide groove 1001; the bracket 1 is provided with two left-right symmetrical slide rails 1002; the two slide rails 1002 are slidably connected to the cross plate 3; and a hydraulic push rod is fixedly connected to the upper side of each slide rail 1002, and the telescopic end of the hydraulic push rod is fixedly connected to the cross plate 3; a plurality of oil pipes 4 are connected to the bracket 1;

[0028] It also includes a rotating ring 102, a fixed ring 103, a first slider 104, a pressure sensor 107, a fixed block 201, a pressure block 202, a fixing bolt 205, a nut 206 and a quick-release assembly; each base 2 is rotatably connected to a rotating ring 102; each rotating ring 102 is fixedly connected to a fixing ring 103; two second slide grooves 3002 are provided on the cross plate 3; four first sliders 104 are slidably connected to all the second slide grooves 3002; the lower side of each first slider 104 is fixedly connected to a pressure sensor 107; each first slider 104 is connected to a quick-release assembly; two fixed blocks 201 are connected to the quick-release assembly; the fixed block 201 is provided with two left-right symmetrical through grooves 20101; the two through grooves 20101 are slidably connected to the fixing bolt 205; the left bolt of the fixing bolt 205 is connected to a nut 206; the upper side of the fixed block 201 is fixedly connected to a pressing block 202; the pressing block 202 is located directly below the pressure sensor 107.

[0029] The quick-release assembly includes a second slider 106 and a third slider 108; each first slider 104 is detachably connected to the second slider 106 on the front and rear sides; two front-to-rear symmetrical third slide grooves 3003 are provided on the cross plate 3; each second slider 106 slides in the corresponding third slide groove 3003; a fourth slide groove 10602 is provided on the lower side of each second slider 106; a third slider 108 is slidably connected in each fourth slide groove 10602; the lower side of the third slider 108 connected to the same first slider 104 is commonly bolted to a fixing block 201.

[0030] Each first slider 104 is provided with three slots 10401 on the front and rear sides; each second slider 106 is provided with three blocks 10601 on the side facing the first slider 104. When it is necessary to detect the hydraulic push rod with the connecting sleeve 666 on the piston rod, the second slider 106 is first installed on the front and rear sides of the first slider 104. During this process, the blocks 10601 are inserted into the corresponding slots 10401 to achieve quick and accurate installation; then the fixing block 201 is connected to the two third sliders 108 by bolts; at this time, the two second sliders 106 are limited by the fixing block 201 and cannot move to the front and rear sides, and then the two second sliders 106 are respectively clamped on the front and rear sides of the first slider 104, so as to achieve quick installation of the fixing block 201.

[0031] A first scale mark 1003 is disposed on the lower side of the bracket 1 ; the first scale mark 1003 is located in front of the first slide slot 1001 ; a positioning slot 2001 is provided on the front side of the base 2 ; and a second scale mark 3001 is disposed on the upper side of the horizontal plate 3 .

[0032] It also includes an electromagnet 101 ; each base 2 is fixedly connected with an electromagnet 101 ; each electromagnet 101 is provided with a switch handle, and the lower side of the rotating ring 102 is in contact with the electromagnet 101 .

[0033] A locker 105 is also included; the upper side of each first sliding block 104 is bolted with a locker 105 .

[0034] When multiple hydraulic cylinders 555 are used for synchronous operation, such as using multiple hydraulic cylinders 555 to lift a heavy object, if all the hydraulic cylinders 555 cannot extend synchronously, only some of the hydraulic cylinders 555 will be stressed, which will cause the heavy object to tilt during the lifting process. At the same time, only these stressed hydraulic push rods are squeezed by the heavy object, resulting in that originally all the hydraulic push rods shared the downward pressure of the heavy object, but now only some of the hydraulic push rods are sharing the pressure, which makes it difficult for these hydraulic push rods to bear the load and cause damage. In the prior art, when multiple hydraulic cylinders 555 are tested synchronously, Usually, a displacement sensor is installed on the piston rod of the hydraulic cylinder 555; and then the extension status of each piston rod in each cylinder is monitored in real time; it is checked whether each hydraulic cylinder 555 is working synchronously, but when performing synchronization detection, it is often only the synchronization of the hydraulic cylinder 555 in a no-load state is tested, which is inconsistent with the actual usage scenario; and when the hydraulic cylinder 555 is detected under a loaded state, only the extension status of the piston rod can be reflected by the displacement sensor; it is impossible to reflect the force of each piston rod on the load object in real time, and it is difficult to truly reflect the usage intensity of each hydraulic cylinder 555.

[0035] To solve the above problem, the present invention proposes the following method: first, according to the number of hydraulic cylinders 555 that need to be synchronously detected, a corresponding number of bases 2 are placed in the first slide 1001; in the initial state, Figure 2As shown: the switch handle on the upper side of the electromagnet 101 is in a horizontal state; at this time, the electromagnet 101 is in a closed state and has no magnetic force; then the worker distributes the base 2 equidistantly on the first slide 1001. During this process, the worker can move the base 2 by observing the first ruler 1003 to make the distance between each alignment groove 2001 consistent, and at the same time make all the hydraulic cylinders 555 symmetrically distributed about the center line of the first slide 1001; when the piston rod of the hydraulic cylinder 555 to be tested is not installed with the connecting sleeve 666, based on the top-down view, the worker turns the switch handle on the electromagnet 101 counterclockwise by 90° to turn on the electromagnet 101, and then adsorbs the base 2 in the first slide 1001 to fix the base 2; and adsorbs the rotating ring 102 to prevent the rotating ring 102 from driving the hydraulic cylinder 555 to rotate; then the worker controls the slide rail 1002 to drive the cross plate 3 to move downward according to the length of the hydraulic cylinder 555 tested; and moves it to the top of the hydraulic cylinder 555; then the worker The position where the base 2 is installed is observed by observing the second scale mark 3001 to slide the first slider 104 to the top of the corresponding base 2; after the first slider 104 moves to the corresponding position, the worker turns the lock 105 to tighten the lock 105 downward; the lower end of the lock 105 contacts the upper side of the cross plate 3, thereby increasing the sliding friction of the first slider 104 and locking the first slider 104; it should be noted that the lock 105 is in a loose state in the initial state, at which time the lock 105 does not contact the cross plate 3; the first slider 104 can slide at will; then the worker controls the slide rail 1002 again to drive the cross plate 3 to move downward, so that the pressure sensor 107 on the lower side of the first slider 104 contacts the piston rod of the hydraulic cylinder 555; it should be noted that the upper ends of the piston rods of the hydraulic cylinders 555 under detection are all at the same height; then the worker connects the oil inlet and outlet of each hydraulic cylinder 555 to the oil pipe 4; and then the position relationship of the hydraulic cylinder 555 when in use is simulated by adjusting the position of the base 2 to improve the detection accuracy;

[0036] After the preparation is completed, the worker starts the hydraulic cylinder 555. At this time, the piston rods of all the hydraulic cylinders 555 will extend upward and squeeze the pressure sensor 107. At this time, the pressure sensor 107 will display the driving force of each hydraulic cylinder 555 in real time; at the same time, the worker can control the hydraulic push rod in the slide rail 1002 to extend downward, thereby driving the cross plate 3 to squeeze downward and thus forming resistance to the upward movement of the piston rod of the hydraulic cylinder 555, simulating the actual use environment of the hydraulic cylinder 555. At the same time, by adjusting the hydraulic pressure of the hydraulic push rod in the slide rail 1002, the synchronous extension and force of the hydraulic cylinder 555 when facing objects of different weights can be detected, and whether the hydraulic cylinder 555 can smoothly push up the cross plate 3 can be checked to detect the use intensity of the hydraulic cylinder 555;

[0037] However, during the upward movement of the piston rod of the hydraulic cylinder 555, if the piston rod of the hydraulic cylinder 555 under detection is not extended synchronously, the piston rod that extends first will first push the cross plate 3 upward, and the pressure detected by the corresponding pressure sensor 107 is relatively large; while the piston rod that extends later cannot contact with the pressure sensor 107, or cannot contact closely with the pressure sensor 107, and the pressure detected by the corresponding pressure sensor 107 is relatively small, or even no pressure; and then this method is used to determine whether the hydraulic cylinder 555 can be extended synchronously; and at the same time, each piston rod can be reflected in real time on the cross plate 3. Whether the force applied by plate 3 is basically consistent, so as to improve the accuracy of synchronous detection; when it is found that the hydraulic cylinders 555 in the detection are not extended synchronously, it means that these hydraulic cylinders 555 cannot be used for synchronous operation test. At this time, it is necessary to replace other hydraulic cylinders 555 for synchronous detection. When it is detected that multiple hydraulic cylinders 555 are extended synchronously, the strength of the hydraulic cylinders 555 can be tested at this time to avoid the situation where multiple hydraulic cylinders 555 cannot be extended synchronously during synchronous operation, resulting in only part of the hydraulic cylinders 555 being stressed, and the use strength of each hydraulic cylinder 555 cannot be truly tested.

[0038] However, many hydraulic cylinders 555 will have a connecting sleeve 666 welded on the piston rod when leaving the factory, and a slot will be opened in the middle of the connecting sleeve 666 for subsequent use; at this time, the force application point of the piston rod of the hydraulic cylinder 555 will change, so the upper end of the connecting sleeve 666 cannot be directly allowed to contact the pressure sensor 107 during testing; the connecting sleeve 666 needs to be connected to the cross plate 3 to simulate the actual usage scenario; at the same time, the coaxiality of each through hole of the connecting sleeve 666 needs to be ensured; therefore, when testing such hydraulic cylinders 555, the worker moves the base 2 to the appropriate position and installs the hydraulic cylinder 555 on the rotating ring 102; the worker first rotates the hydraulic cylinder 555 to rotate the rotating ring 102, and adjusts the connecting sleeve 666 of the piston rod of the hydraulic cylinder 555 The angle makes the holes of the piston rod connecting sleeve 666 of each hydraulic cylinder 555 aligned horizontally, improves the coaxiality, and facilitates the insertion of the subsequent fixing bolt 205; then the first slider 104 is moved to the corresponding position; then the worker installs the second slider 106 on the front and rear sides of the first slider 104. In this process, the clamping block 10601 is inserted into the corresponding clamping groove 10401 to achieve fast and accurate installation; then the fixing block 201 is connected to the two third sliders 108 by bolts; at this time, the two second sliders 106 are limited by the fixing block 201 and cannot move to the front and rear sides, and then the two second sliders 106 are respectively clamped on the front and rear sides of the first slider 104, so as to achieve fast installation of the fixing block 201; after the installation is completed, Figure 4-Figure 6As shown: at this time, under the influence of gravity, the third slider 108 slides downward in the fourth slide groove 10602; the pressure block 202 is located directly below the pressure sensor 107; then the worker controls the slide rail 1002 to drive the cross plate 3 downward, so that the through hole of the connecting sleeve 666 of the piston rod of the hydraulic oil cylinder 555 is aligned with the through groove 20101; then the fixing bolt 205 is inserted into the through groove 20101 and the connecting sleeve 666 of the piston rod of the hydraulic oil cylinder 555; and then the fixing bolt 205 is fixed by the nut 206. ; Then connect the connecting sleeve 666 of the piston rod of the hydraulic cylinder 555 to the cross plate 3; It should be noted here that the fixing bolt 205 and the nut 206 are selected according to the size of the through hole of the connecting sleeve 666; Therefore, the size of the fixing bolt 205 is consistent with the size of the through hole of the connecting sleeve 666, so when the fixing bolt 205 is inserted into the piston rod connecting sleeve 666, even if the position of the through hole of the connecting sleeve 666 is slightly offset, it can be corrected by the fixing bolt 205, so that each connecting sleeve 666 maintains coaxiality;

[0039] After the preparation work is completed, the worker starts the hydraulic cylinder 555; the piston rod of the hydraulic cylinder 555 extends upward, thereby pushing the fixed block 201 upward; then the third slider 108 is pushed upward, so that the pressure block 202 contacts the pressure sensor 107; then the driving force of each hydraulic cylinder 555 is detected by the pressure sensor 107; if the piston rods of the hydraulic cylinders 555 being tested are not extended synchronously, the piston rod that extends first will first push the fixed block 201 upward; then the pressure block 202 contacts the pressure sensor 107, and then the test is carried out; although the piston rod that extends later will also push the fixed block 201 upward, the piston rod that extends first will not push the fixed block 201 upward. The piston rod has already lifted the cross plate 3 upwards in advance, and then lifted the first slider 104, the second slider 106, the third slider 108 and the fixed block 201 upwards, so the piston rod extended later is only relatively lifting the fixed block 201 upwards, and the third slider 108 is not lifted upwards at this time, so the pressure block 202 will not contact the pressure sensor 107, and then the hydraulic cylinder 555 equipped with the connecting sleeve 666 is detected; it is determined whether the hydraulic cylinder 555 is extended synchronously; at the same time, it is reflected in real time whether the force of each piston rod on the cross plate 3 is basically consistent, so as to improve the accuracy of synchronous detection, and at the same time, the strength of the hydraulic cylinder 555 is detected. Example 2

[0040] On the basis of Example 1, Figure 3-Figure 7 As shown, it also includes an electric push rod 204 and an internal support assembly; the right side of each fixing bolt 205 is fixedly connected to an electric push rod 204; the output end 20401 of each electric push rod 204 slides in the corresponding fixing bolt 205; the middle part of each fixing bolt 205 is connected to an internal support assembly.

[0041] The internal support assembly includes a sliding rod 207, an internal support plate 208 and a connecting rod 209; a fifth sliding groove 20501 is opened in each fixing bolt 205; a sliding rod 207 is fixedly connected to each output end 20401; each sliding rod 207 slides in the corresponding fifth sliding groove 20501; each sliding rod 207 is fixedly connected to the corresponding fixing bolt 205 with six connecting rods 209; an internal support plate 208 is fixedly connected to each connecting rod 209.

[0042] The contact surface between the inner support plate 208 and the piston rod connector of the hydraulic cylinder 555 is a rough surface.

[0043] It also includes a correction block 203; each of the left and right sides of the fixed block 201 is slidably connected with a correction block 203; each correction block 203 is outside the corresponding through slot 20101.

[0044] When the synchronization detection of the hydraulic cylinder 555 equipped with the connecting sleeve 666 is performed in the first embodiment: according to the through hole size of the connecting sleeve 666, it is necessary to use the fixing bolt 205 adapted thereto, so it is necessary to prepare many fixing bolts 205 of different sizes, which is troublesome;

[0045] To solve the above problem, the present invention proposes the following method: When the fixing bolt 205 is inserted into the through slot 20101 and the connecting sleeve 666, Figure 5-Figure 7 As shown: the electric push rod 204 contacts the right side of the fixing block 201, and the inner support plate 208 is located in the connecting sleeve 666; then the worker turns the nut 206 knob to the left side of the fixing bolt 205, so that the nut 206 fits with the left side of the fixing block 201, and then fixes the fixing bolt 205; then the worker starts the electric push rod 204 again, and the output end 20401 moves to the right, thereby driving the slide bar 207 to move to the right. At this time, the slide bar 207 moves to the right in the fifth slide groove 20501, and the connecting rod 209 is linked, like a pair of scissors, contracting on the left and right sides and stretching on the upper and lower sides, thereby pushing the inner support plate 208 outward, and then the inner support plate 208 contacts the inner wall of the through hole of the connecting sleeve 666 to fix the connecting sleeve 666; and then the fixing bolt 205 is adapted to the size of different connecting sleeves 666 through the inner support assembly;

[0046] However, the inner support component is used to adapt to the sizes of different connecting sleeves 666. At this time, the fixing bolt 205 is smaller than the diameter of the through hole of the connecting sleeve 666. Therefore, the fixing bolt 205 can no longer correct the coaxiality of the connecting sleeve 666; and the worker rotates the hydraulic cylinder 555 to rotate the rotating ring 102 and adjust the angle of the connecting sleeve 666 so that the through holes of the connecting sleeve 666 of each hydraulic cylinder 555 are aligned horizontally, which can only improve the coaxiality; it cannot ensure that the coaxiality of each connecting sleeve 666 is consistent; at the same time, if the connecting sleeve 666 deflects, the inner support plate 208 cannot completely contact the inner wall of the through hole of the connecting sleeve 666 after expanding outward, which will have a serious impact on the detection accuracy; therefore, when the fixing bolt 205 is inserted into the through groove 20101 and the connecting sleeve 666, the electric push rod 204 will push the correction block 203 on the right side toward the connecting sleeve 666, and when When nut 206 is twisted into the left side of fixing bolt 205, nut 206 will also push the correction block 203 on the left side toward the connecting sleeve 666. When nut 206 is fully tightened, that is, nut 206 squeezes the correction block 203 to the left side of fixing block 201, fixing bolt 205 is now completely fixed, and at the same time, the two correction blocks 203 also complete the correction of connecting sleeve 666. Connecting sleeve 666 is located in the middle of fixing block 201, thereby ensuring the coaxiality of each connecting sleeve 666, and the inner support plate 208 can also be completely in contact with the inner wall of the through hole of connecting sleeve 666 after internal support; at the same time, correction block 203 also becomes a gasket between nut 206 and electric push rod 204 and fixing block 201, to avoid excessive force when hydraulic cylinder 555 is working, causing nut 206 to loosen; improving the fixing effect between fixing bolt 205 and fixing block 201.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A hydraulic cylinder strength detection device, comprising a bracket (1), a base (2), a cross plate (3) and an oil pipe (4); a first slide groove (1001) is provided on the lower side of the bracket (1); the base (2) is slidably connected to the first slide groove (1001); the bracket (1) is provided with a slide rail (1002); the slide rail (1002) is slidably connected to the cross plate (3); and a hydraulic push rod is fixedly connected to the upper side of each slide rail (1002), and the telescopic end of the hydraulic push rod is fixedly connected to the cross plate (3); a plurality of oil pipes (4) are connected to the bracket (1); the characteristics are: It also includes a rotating ring (102), a fixed ring (103), a first slider (104), a pressure sensor (107), a fixed block (201), a pressure block (202), a fixing bolt (205), a nut (206) and a quick-release assembly; each base (2) is rotatably connected to a rotating ring (102); each rotating ring (102) is fixedly connected to a fixing ring (103) for fixing a hydraulic cylinder (555); a plurality of second sliding grooves (3002) are provided on the horizontal plate (3); a plurality of first sliders (104) are slidably connected to all the second sliding grooves (3002); each A pressure sensor (107) for testing the hydraulic cylinder (555) is fixedly connected to the lower side of each first slider (104); a quick-release assembly is connected to each first slider (104); a plurality of fixing blocks (201) are connected to the quick-release assembly; two left-right symmetrical through slots (20101) are provided on the fixing block (201); a fixing bolt (205) is slidably connected to the two through slots (20101); a nut (206) is fixedly connected to the left side of the fixing bolt (205); a pressing block (202) is fixedly connected to the upper side of the fixing block (201); the pressing block (202) is located directly below the pressure sensor (107); It also includes an electric push rod (204) and an inner support assembly; the right side of each fixing bolt (205) is fixedly connected to the electric push rod (204); the output end (20401) of each electric push rod (204) slides in the corresponding fixing bolt (205); the middle part of each fixing bolt (205) is connected to an inner support assembly for adapting to the piston rod connecting sleeve (666) of a hydraulic cylinder (555) of different sizes.

2. A hydraulic cylinder strength detection device according to claim 1, characterized in that: The quick-release assembly comprises a second slider (106) and a third slider (108); each first slider (104) is detachably connected to the second slider (106); two third sliding grooves (3003) are provided on the horizontal plate (3) and are symmetrical in front and back; each second slider (106) slides in the corresponding third sliding groove (3003); a fourth sliding groove (10602) is provided on the lower side of each second slider (106); a third slider (108) is slidably connected in each fourth sliding groove (10602); and a fixing block (201) is fixedly connected to the lower side of the third slider (108) connected to the same first slider (104).

3. A hydraulic cylinder strength detection device according to claim 2, characterized in that: A plurality of card slots (10401) are provided on the front and rear sides of each first sliding block (104); and a plurality of card blocks (10601) are provided on the side of each second sliding block (106) facing the first sliding block (104).

4. A hydraulic cylinder strength detection device according to claim 2, characterized in that: A first scale mark (1003) is arranged on the lower side of the bracket (1); the first scale mark (1003) is located in front of the first slide groove (1001); an alignment groove (2001) is provided on the front side of the base (2); and a second scale mark (3001) is arranged on the upper side of the horizontal plate (3).

5. A hydraulic cylinder strength detection device according to claim 4, characterized in that: It also includes an electromagnet (101); each base (2) is fixedly connected to an electromagnet (101); each electromagnet (101) is provided with a switch handle, and the lower side of the rotating ring (102) is in contact with the electromagnet (101).

6. A hydraulic cylinder strength detection device according to claim 3, characterized in that: It also includes a locker (105); the upper side of each first sliding block (104) is fixedly connected to the locker (105).

7. A hydraulic cylinder strength detection device according to claim 1, characterized in that: The inner support assembly comprises a slide bar (207), an inner support plate (208) and a connecting rod (209); a fifth slide groove (20501) is provided in each fixing bolt (205); a slide bar (207) is fixedly connected to each output end (20401); each slide bar (207) slides in the corresponding fifth slide groove (20501); each slide bar (207) is fixedly connected to the corresponding fixing bolt (205) with a plurality of connecting rods (209); and each connecting rod (209) is fixedly connected to the inner support plate (208).

8. A hydraulic cylinder strength detection device according to claim 7, characterized in that: The contact surface between the inner support plate (208) and the piston rod connector of the hydraulic cylinder (555) is a rough surface.

9. A hydraulic cylinder strength detection device according to claim 2, characterized in that: It also includes a correction block (203); the left side and the right side of each fixed block (201) are slidably connected to a correction block (203); and each correction block (203) is located outside the corresponding through slot (20101).

Images