CN213455973U - Wide-range hydraulic force standard machine - Google Patents
Wide-range hydraulic force standard machine Download PDFInfo
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- CN213455973U CN213455973U CN202022909182.8U CN202022909182U CN213455973U CN 213455973 U CN213455973 U CN 213455973U CN 202022909182 U CN202022909182 U CN 202022909182U CN 213455973 U CN213455973 U CN 213455973U
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Abstract
The utility model relates to a wide range fluid pressure type force standard machine relates to the technical field of force standard machine, and it includes main part device and measuring force device, the measuring force device is used for producing standard pressure, the main part device be used for with the standard pressure that the measuring force device produced is enlargied, the main part device includes two at least work hydro-cylinders, work hydro-cylinder with be connected with parallelly connected oil circuit between the measuring force device. According to the hydraulic force standard machine, the main body device, the force measuring device, the parallel oil circuit and the working oil cylinders are arranged, so that working states of the working oil cylinders can be changed by workers according to an object to be measured, and the hydraulic force standard machine can obtain a larger measuring range.
Description
Technical Field
The application relates to the technical field of force standard machines, in particular to a wide-range hydraulic force standard machine.
Background
The force standard machine can be divided into a dead weight type, a lever type, a hydraulic type, a superposition type and the like according to the structure. The hydraulic force standard machine is characterized in that the force generated by a weight is amplified by a hydraulic system to be used as a standard load. The hydraulic force standard machine is a force standard device designed and manufactured based on the Pascal principle, takes the gravity of a weight as a standard force value, and automatically and stably applies the force value to a force standard machine on a detected force instrument according to a preset sequence after the force value is amplified by a combined oil circuit system of two groups of oil cylinder pistons.
In the related art, the effective measurement range of the hydraulic force standard machine is 5% -100% of the maximum load of the oil cylinder, and the hydraulic force standard machine generally comprises a combined oil circuit system with two groups of oil cylinders, namely a large oil cylinder and a small oil cylinder, so that the situation that the pressure to be measured is less than 5% of the maximum load of the large oil cylinder in the hydraulic force standard machine is inevitable, and the hydraulic force standard machine cannot perform measurement.
In view of the above-mentioned related art, the inventor believes that there is a defect that the measurement range of the hydraulic force standard machine is small.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the hydraulic force standard machine is small in measuring range, the application provides a wide-range hydraulic force standard machine.
The application provides a wide range fluid pressure type force standard machine adopts following technical scheme:
a wide-range hydraulic force standard machine comprises a main body device and a force measuring device, wherein the force measuring device is used for generating standard pressure, the main body device is used for amplifying the standard pressure generated by the force measuring device, the main body device comprises at least two working oil cylinders, and parallel oil paths are connected between the working oil cylinders and the force measuring device.
By adopting the technical scheme, the force measuring device is used for generating standard pressure, the standard pressure is transmitted to the main body device through the parallel oil way, and the main body device is used for amplifying the standard pressure and applying the amplified standard pressure to an object to be measured through the working oil cylinder, so that the measurement work of the object to be measured is realized.
The staff can control the oil circuit that connects in parallel according to the attribute of the object that awaits measuring for the working cylinder that is in operating condition can be one, two or more, and then makes standard pressure can be decomposed into the multiunit and transmit to each working cylinder on.
The hydraulic force standard machine in the related technology uses a single working oil cylinder, the maximum load of the working oil cylinder is the maximum standard pressure, the range which can be reached by the hydraulic force standard machine is 5% -100% of the maximum standard pressure, and the arrangement of a plurality of working oil cylinders is controlled by using parallel oil passages, so that the maximum standard pressure can be averagely decomposed to the plurality of working oil cylinders, and the maximum load of each working oil cylinder is the maximum standard pressure divided by the number of the working oil cylinders. When one working oil cylinder is controlled to work, the range which can be reached by the working oil cylinder is 5% -100% of the maximum standard pressure divided by the number of the working oil cylinders; when a plurality of working oil cylinders are controlled to work, the measuring range of the hydraulic force standard machine is the sum of the measuring ranges of the working oil cylinders, namely 5% -100% of the maximum standard pressure.
In summary, the working oil cylinder in the working state can be changed by the operator through controlling the parallel oil path, so as to achieve the purpose of expanding the measuring range of the hydraulic force standard machine.
Optionally, the main body device further comprises a frame, a moving mechanism slidably mounted on the frame, and a mounting mechanism mounted on the frame, and the working oil cylinder is mounted on the mounting mechanism.
By adopting the technical scheme, the arrangement of the moving mechanism provides a platform for loading an object to be tested, and the arrangement of the mounting mechanism provides a mounting platform for the working oil cylinder. When the measurement work is needed, a worker places an object to be measured on the moving mechanism, the moving mechanism moves along the vertical direction and is close to the working oil cylinder, and the working oil cylinder receives the standard pressure and applies pressure to the object to be measured to complete the measurement work of the object to be measured.
Optionally, the rack includes a base, four columns installed on the base, and an upper beam installed on the columns, and the moving mechanism is slidably installed between the base and the upper beam.
Through adopting above-mentioned technical scheme, the setting of base, stand and entablature plays the limiting displacement to the mobility mechanism activity region in the frame.
Optionally, the mounting mechanism includes a reverser mounted on the upper beam, and the working cylinder is mounted on the reverser.
Through adopting above-mentioned technical scheme, the setting of reverser plays and exports standard pressure into to press to and draw to the effect of two kinds of forces.
Optionally, the reverser comprises a reverser lower pressing plate installed on the base, a reverser lower pull rod installed on the reverser lower pressing plate, a reverser upper pressing plate installed at the top end of the reverser lower pull rod, a reverser upper pull rod installed on the reverser upper pressing plate and a reverser upper pull plate installed at the top end of the reverser upper pull rod, the reverser upper pressing plate is located between the base and the upper beam, the reverser upper pull rod penetrates through the top surface of the upper beam, and the working oil cylinder is installed between the reverser upper pull plate and the upper beam.
Through adopting above-mentioned technical scheme, the effect of transmission standard pressure is played in the setting of reverser top board, and the setting of reverser top board and reverser holding down plate plays and becomes to press to and draw the effect of two kinds of forces with standard pressure output.
Optionally, the moving mechanism includes two screws installed between the upper beam and the base, a moving beam slidably installed on the screws, a barrel rotatably connected to the moving beam, and a driving assembly installed on the moving beam, a screw thread engaged with the screws is provided on an inner wall of the barrel, and the driving assembly is used for driving the barrel to rotate.
By adopting the technical scheme, the driving assembly is arranged to drive the movable beam to axially displace along the screw rod, so that the pressure measurement of the object to be measured on the movable beam is facilitated; meanwhile, the movable beam divides the space between the upper pressure plate and the lower pressure plate of the reverser into a pulling direction and a pressing direction to two working areas.
Optionally, the driving assembly comprises a servo motor installed on the end wall of the movable beam, a worm connected to an output shaft of the servo motor in a key connection mode, and a worm wheel meshed with the worm, the worm is rotatably connected to the movable beam, and the outer wall of the threaded sleeve is fixedly connected with the inner wall of the worm wheel.
Through adopting above-mentioned technical scheme, when needs adjust the position of walking beam on the lead screw, start servo motor, servo motor's output shaft drives the worm and takes place to rotate, and the worm drives the worm wheel rather than meshing and takes place to rotate, and the worm wheel drives the swivel nut and takes place to rotate, and the swivel nut changes with lead screw thread fit's position to make the walking beam change the position on the lead screw, realize the adjustment to the walking beam position.
Optionally, the force measuring device comprises a bracket, a force measuring cylinder mounted on the bracket, and a measuring assembly mounted on the bracket, and the force measuring cylinder is connected with the working cylinder through the parallel oil path.
Through adopting above-mentioned technical scheme, the setting of measuring component plays the effect that produces standard pressure, and the setting of dynamometry hydro-cylinder plays the effect of passing through the parallel oil circuit with standard pressure to work hydro-cylinder department.
Optionally, the measuring assembly includes a central boom mounted on the support, a weight tray mounted on the central boom, and a weight tray mounted in the support, and the weight trays are provided with multiple groups in the vertical direction.
By adopting the technical scheme, the weight trays on the central suspender and the multiple groups of weight trays in the bracket are arranged, so that the staff can obtain different standard pressures by changing the number of the weight trays on the weight trays.
Optionally, the number of the working oil cylinders is five, four of the working oil cylinders are distributed on the upper pulling plate of the reverser in a diamond shape, and the fifth working oil cylinder is located at the center of the four working oil cylinders.
By adopting the technical scheme, the working personnel can control the four working oil cylinders distributed in a diamond shape to work independently or the working oil cylinder positioned in the center of the four working oil cylinders to work independently or the five working oil cylinders to work simultaneously through the parallel oil circuit, so that the hydraulic force standard machine obtains a larger measuring range.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the main body device, the force measuring device, the parallel oil circuit and the working oil cylinders, working personnel can change the working states of the working oil cylinders according to an object to be measured, and further the hydraulic force standard machine can obtain a larger measuring range;
2. through the arrangement of the reverser, the main body device can output the standard pressure into two forces of pressing and pulling, so that the hydraulic force standard machine can meet the pressure and pulling force test work of an object to be tested;
3. through the arrangement of the force measuring assembly and the force measuring oil cylinder, the force measuring oil cylinder can transmit the standard pressure generated by the force measuring assembly to the working oil cylinder, and the effect of applying load to the working oil cylinder is achieved.
Drawings
Fig. 1 is a schematic perspective view of a hydraulic force standard machine according to an embodiment of the present application;
FIG. 2 is a perspective view of the force measuring device of FIG. 1;
fig. 3 is a partially enlarged structural view of a portion a shown in fig. 2;
FIG. 4 is a schematic perspective view of the main body apparatus shown in FIG. 1;
FIG. 5 is a cross-sectional structural view of the walking beam shown in FIG. 4;
fig. 6 is a sectional structural view of the working cylinder shown in fig. 4.
Description of reference numerals: 100. a support; 101. a chassis; 102. a fan-shaped sheet; 103. a top tray; 110. a measurement assembly; 111. a central boom; 112. a weight tray; 113. a weight tray; 114. a connecting rod; 115. a force measuring reverser; 120. a force measuring oil cylinder; 130. installing a disc; 140. a mounting member; 141. a motor; 142. mounting blocks; 143. a slide bar; 144. a horizontal bar; 145. a cam; 150. a frame; 151. a base; 152. a column; 153. an upper beam; 160. a moving mechanism; 161. a lead screw; 162. a moving beam; 163. a threaded sleeve; 164. a drive assembly; 1641. a servo motor; 1642. a worm; 1643. a worm gear; 170. an installation mechanism; 171. a reverser lower pull rod; 172. a reverser lower pressing plate; 173. an inverter upper platen; 174. the reverser is provided with a pull rod; 175. a reverser upper pulling plate; 180. and a working oil cylinder.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a wide-range hydraulic force standard machine. Referring to fig. 1, the hydraulic force standard machine includes a body device, a force measuring device and a parallel oil path connected between the body device and the force measuring device, the force measuring device is used for generating a standard pressure, and the body device is used for applying the standard pressure generated by the force measuring device to an object to be measured.
Referring to fig. 1, the force measuring device comprises a bracket 100, a measuring assembly 110 fixedly mounted on the bracket 100, and a load cylinder 120 fixedly mounted on the top end of the bracket 100.
Referring to fig. 2, the bracket 100 includes a bottom plate 101, a segment 102 fixedly mounted on the bottom plate 101, and a top plate 103 fixedly mounted on the top end of the segment 102, and a mounting disk 130 is fixedly mounted at the center of the top plate 103.
Referring to fig. 2, the measuring assembly 110 includes a central suspension rod 111 fixedly mounted on the mounting disc 130, a weight tray 112 fixedly mounted on the central suspension rod 111, a weight tray 113 slidably mounted on the central suspension rod 111, two connecting rods 114 fixedly mounted on the mounting disc 130, and a force measuring reverser 115 fixedly mounted on the top ends of the two connecting rods 114. The weight trays 112 are used for supporting the weight plates 113, the weight trays 112 correspond to the weight plates 113 one by one, the number of the weight trays 112 and the number of the weight plates 113 can be six, seven or eight, and the weight trays 112 and the weight plates 113 can be arranged in any number to generate standard pressure. The position of the weight tray 112 on the central boom 111 is lower than the position of the weight tray 113 corresponding to the weight tray 112. The load cell cylinder 120 is fixedly mounted to the top of the load reverser 115.
Referring to fig. 2, the number of the sector plates 102 may be three, four, or five, but any number may be provided to support the weight plates 113. The three fan-shaped pieces 102 are fixedly connected to the chassis 101 along the circumferential direction of the chassis 101, six mounting pieces 140 are arranged on the fan-shaped pieces 102 along the vertical direction, the mounting pieces 140 are used for supporting the weight plates 113, the number of the mounting pieces 140 can be seven or eight, and the weight plates 113 can be supported by the mounting pieces 140.
Referring to fig. 2 and 3, the mounting member 140 includes a motor 141 fixedly mounted on the inner wall of the segment 102, two mounting blocks 142 fixedly mounted on the inner wall of the segment 102, a sliding rod 143 slidably mounted on the two mounting blocks 142, a horizontal rod 144 fixedly mounted on the sliding rod 143, and a cam 145 key-connected to the output shaft of the motor 141. The two mounting blocks 142 are positioned above the motor 141, the sliding rod 143 sequentially penetrates through the two mounting blocks 142 along the vertical direction and abuts against the cam 145, the horizontal rod 144 is positioned between the two mounting blocks 142, and the horizontal rod 144 is used for abutting against the weight tray 112 on the central suspension rod 111.
When the hydraulic force standard machine is not in use, the output shaft of the motor 141 drives the cam 145 to rotate, the cam 145 pushes the sliding rod 143 to displace along the vertical upward direction, the horizontal rod 144 on the sliding rod 143 displaces along the vertical upward direction, and the horizontal rod 144 abuts against the weight tray 113 and pushes the weight tray 133 to be far away from the weight tray 112.
When the hydraulic force standard machine is in a working state, the output shaft of the motor 141 drives the cam 145 to rotate, the cam 145 changes the position abutted against the bottom end of the sliding rod 143, the sliding rod 143 moves along the vertical downward direction, the horizontal rod 144 on the sliding rod 143 moves along the vertical downward direction, the horizontal rod 144 is far away from the weight tray 133, and the weight tray 113 falls on the weight tray 112.
Referring to fig. 1, the main body device includes a frame 150, a moving mechanism 160 slidably mounted on the frame 150, a mounting mechanism 170 fixedly mounted on the frame 150, and five working cylinders 180 mounted on the mounting mechanism 170, and parallel oil paths are connected between the working cylinders 180 and the load cells 120.
Referring to fig. 4, the frame 150 includes a base 151, four columns 152 fixedly mounted on the base 151, and an upper beam 153 fixedly mounted on the columns 152, and the moving mechanism 160 is slidably mounted between the base 151 and the upper beam 153.
Referring to fig. 4 and 5, the moving mechanism 160 includes two lead screws 161 fixedly installed between the upper beam 153 and the base 151, a moving beam 162 slidably installed on the lead screws 161, a screw sleeve 163 rotatably connected to the moving beam 162, and a driving assembly 164 installed on the moving beam 162. The driving assembly 164 includes a servo motor 1641 fixedly installed on an end wall of the movable beam 162, a worm 1642 key-connected to an output shaft of the servo motor 1641, and two worm wheels 1643 engaged with the worm 1642.
Referring to fig. 5, a mounting hole for mounting a worm wheel 1643 is formed in the moving beam 162 along the vertical direction, the worm 1642 extends into the moving beam 162 and is engaged with the two worm wheels 1643, the screw sleeve 163 is fixedly connected to the inner wall of the worm wheel 1643, and a screw thread matched with the screw 161 is formed on the inner wall of the screw sleeve 163.
Referring to fig. 4, the mounting mechanism 170 includes an inverter mounted on the top surface of the upper beam 153, the inverter including four inverter lower links 171 fixedly mounted on the base 151, an inverter lower pressing plate 172 fixedly mounted on the bottom ends of the inverter lower links 171, an inverter upper pressing plate 173 fixedly mounted on the top ends of the inverter lower links 171, an inverter upper pull rod 174 fixedly mounted on the top surface of the inverter upper pressing plate 173, and an inverter upper pull plate 175 fixedly mounted on the top ends of the inverter upper pull rods 174.
Referring to fig. 4 and 6, the inverter upper pressing plate 173 is located between the base 151 and the upper beam 153, the moving beam 162 is located between the inverter upper pressing plate 173 and the inverter lower pressing plate 172, and the moving beam 162 divides a space between the inverter upper pressing plate 173 and the inverter lower pressing plate 172 into pressing and pulling toward two working areas. The reverser upper tie rod 174 passes through the top surface of the upper beam 153, five working cylinders 180 are fixedly mounted on the top surface of the upper beam 153, and piston rods of the five working cylinders 180 are abutted against the reverser upper tie plate 175. The four working cylinders 180 are distributed along the top surface of the upper beam 153 in a diamond shape, and the fifth working cylinder 180 is located at the center of the diamond shape surrounded by the four working cylinders 180.
The implementation principle of a wide-range hydraulic force standard machine in the embodiment of the application is as follows:
when the object to be measured needs to be measured, the object to be measured is placed on the movable beam 162, the servo motor 1641 is started, the output shaft of the servo motor 1641 drives the worm 1642 to rotate, the worm 1642 drives the two worm wheels 1643 engaged with the worm to rotate, the worm wheels 1643 drive the threaded sleeve 163 to rotate, and the movable beam 152 displaces along the vertical upward direction until the object to be measured on the movable beam 162 moves to a certain height.
Then the motor 141 is started, the output shaft of the motor 141 drives the cam 145 to rotate, the cam 145 changes the position abutted against the bottom end of the sliding rod 143, the sliding rod 143 moves in the vertical downward direction, the horizontal rod 144 on the sliding rod 143 moves in the vertical downward direction, the horizontal rod 144 is far away from the weight tray 133, and the weight tray 113 falls on the weight tray 112.
After receiving the gravity of the weight tray 113, the weight tray 112 is transmitted to the force measuring reverser 115 through the central suspension rod 111 and the connecting rod 114, the force measuring reverser 115 transmits the action to the force measuring cylinder 120, the force measuring cylinder 120 converts the action into standard pressure and transmits the standard pressure to the working cylinder 180 through the parallel oil circuit, and the working cylinder 180 applies the standard pressure to the object to be measured, thereby completing the measurement work.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A wide range fluid pressure type force standard machine which characterized in that: the main body device is used for amplifying the standard pressure generated by the force measuring device, and comprises at least two working oil cylinders (180), and parallel oil paths are connected between the working oil cylinders (180) and the force measuring device.
2. A wide range hydraulic force standard machine according to claim 1, wherein: the main body device further comprises a rack (150), a moving mechanism (160) which is installed on the rack (150) in a sliding mode and an installation mechanism (170) which is installed on the rack (150), wherein the working oil cylinder (180) is installed on the installation mechanism (170).
3. A wide range hydraulic force standard machine according to claim 2, wherein: the rack (150) comprises a base (151), four upright posts (152) arranged on the base (151) and an upper beam (153) arranged on the upright posts (152), wherein the moving mechanism (160) is arranged between the base (151) and the upper beam (153) in a sliding manner.
4. A wide range hydraulic force standard machine according to claim 3, wherein: the mounting mechanism (170) comprises a reverser mounted on the upper beam (153), and the working cylinder (180) is mounted on the reverser.
5. A wide range hydraulic force standard machine according to claim 4, wherein: the reverser comprises a reverser lower pressing plate (172) arranged on the base (151), a reverser lower pull rod (171) arranged on the reverser lower pressing plate (172), a reverser upper pressing plate (173) arranged at the top end of the reverser lower pull rod (171), a reverser upper pull rod (174) arranged on the reverser upper pressing plate (173) and a reverser upper pull plate (175) arranged at the top end of the reverser upper pull rod (174), wherein the reverser upper pressing plate (173) is positioned between the base (151) and the upper beam (153), the reverser upper pull rod (174) penetrates through the top surface of the upper beam (153), and the working oil cylinder (180) is arranged between the reverser upper pull plate (175) and the upper beam (153).
6. A wide range hydraulic force standard machine according to claim 3, wherein: the moving mechanism (160) comprises two lead screws (161) arranged between the upper beam (153) and the base (151), a moving beam (162) arranged on the lead screws (161) in a sliding mode, a threaded sleeve (163) connected to the moving beam (162) in a rotating mode and a driving assembly (164) arranged on the moving beam (162), lead screw threads matched with the lead screws (161) are arranged on the inner wall of the threaded sleeve (163), and the driving assembly (164) is used for driving the threaded sleeve (163) to rotate.
7. A wide range hydraulic force standard machine according to claim 6, wherein: the driving assembly (164) comprises a servo motor (1641) arranged on the end wall of the moving beam (162), a worm (1642) connected to an output shaft of the servo motor (1641) in a key mode and a worm wheel (1643) meshed with the worm (1642), the worm (1642) is connected to the moving beam (162) in a rotating mode, and the outer wall of the screw sleeve (163) is fixedly connected with the inner wall of the worm wheel (1643).
8. A wide range hydraulic force standard machine according to claim 1, wherein: the force measuring device comprises a support (100), a force measuring oil cylinder (120) arranged on the support (100) and a measuring assembly (110) arranged on the support (100), wherein the force measuring oil cylinder (120) is connected with the working oil cylinder (180) through the parallel oil way.
9. A wide range hydraulic force standard machine according to claim 8, wherein: the measuring assembly (110) comprises a central suspension rod (111) arranged on the support (100), weight trays (112) arranged on the central suspension rod (111) and weight trays (113) arranged in the support (100), wherein multiple groups of weight trays (113) are arranged in the vertical direction.
10. A wide range hydraulic force standard machine according to claim 5, wherein: the number of the working oil cylinders (180) is five, wherein four working oil cylinders (180) are distributed on the reverser upper pulling plate (175) in a diamond shape, and the fifth working oil cylinder (180) is positioned at the center of the four working oil cylinders (180).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022909182.8U CN213455973U (en) | 2020-12-04 | 2020-12-04 | Wide-range hydraulic force standard machine |
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| CN202022909182.8U CN213455973U (en) | 2020-12-04 | 2020-12-04 | Wide-range hydraulic force standard machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468702A (en) * | 2022-10-21 | 2022-12-13 | 中储恒科物联网***有限公司 | Creep performance testing system, method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468702A (en) * | 2022-10-21 | 2022-12-13 | 中储恒科物联网***有限公司 | Creep performance testing system, method and device |
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