CN111006856B - Test tool for performance of bolt - Google Patents
Test tool for performance of bolt Download PDFInfo
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- CN111006856B CN111006856B CN201910979283.1A CN201910979283A CN111006856B CN 111006856 B CN111006856 B CN 111006856B CN 201910979283 A CN201910979283 A CN 201910979283A CN 111006856 B CN111006856 B CN 111006856B
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a test tool for the performance of a bolt, and belongs to the technical field of test tools. Tooling: a mounting rack, a bolt cylinder and a bolt oil cylinder, hydraulic module and control module, a bolt section of thick bamboo is fixed in the mounting bracket, a bolt section of thick bamboo is used for cartridge bolt and the bolt clearance fit that awaits measuring, the bolt hydro-cylinder includes oil pocket and oil pole, the first end of oil pocket is fixed in the mounting bracket, the second end of oil pole stretches out the second end of oil pocket and is fixed in the first end of the bolt that awaits measuring, hydraulic module includes the motor, the hydraulic pump, oil tank and electromagnetic directional control valve, the motor is connected with the hydraulic pump electricity, the oil suction opening and the oil tank intercommunication of hydraulic pump, the oil-out of hydraulic pump and the oil inlet intercommunication of electromagnetic directional control valve, the oil-out and the oil tank intercommunication of electromagnetic directional control valve, there is the pole chamber intercommunication of first working fluid port and oil pocket of electromagnetic directional control valve, control module is used for, first electro-magnet and the second electro-magnet of control electromagnetic directional control valve are got or are lost the electricity.
Description
Technical Field
The invention relates to the technical field of test tools, in particular to a test tool for the performance of a bolt.
Background
The hydraulic bolt lifting device is a device for controlling the lifting of an ocean platform (such as an ocean wind power installation platform). The hydraulic bolt lifting device mainly comprises pile legs, a ring beam, a lifting oil cylinder, a bolt seat and a bolt oil cylinder. The bolt is controlled to be inserted into and pulled out of the bolt hole of the pile leg through the bolt oil cylinder, so that the lifting of the platform is controlled.
In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
due to the fact that the offshore working environment is severe and the frequency of ship moving of a wind power installation ship is high, a hydraulic bolt lifting system is prone to the fault that plugging and unplugging of a bolt are not smooth, the bolt is high in maintenance cost and difficult to diagnose the fault reason under the offshore environment, and a bolt with optimal reliability needs to be assembled into the hydraulic bolt lifting device, so that bolt faults are reduced.
Disclosure of Invention
The embodiment of the invention provides a test tool for the performance of a bolt, which can test the performance of the bolt, thereby optimizing the design of the bolt and improving the reliability of the bolt. The technical scheme is as follows:
the invention provides a test tool for the performance of a bolt, which comprises the following components: a mounting rack, a bolt cylinder, a bolt oil cylinder, a hydraulic module and a control module,
the bolt barrel is fixed on the mounting rack, is used for inserting a bolt to be tested and is in clearance fit with the bolt to be tested,
the bolt oil cylinder comprises an oil cavity and an oil rod, the first end of the oil cavity is fixed on the mounting frame, the first end of the oil rod is sleeved in the oil cavity, the second end of the oil rod extends out of the second end of the oil cavity and is fixed at the first end of the bolt to be tested, the oil rod is connected with the oil cavity in a sliding manner,
the hydraulic module comprises a motor, a hydraulic pump, an oil tank and an electromagnetic directional valve, the motor is electrically connected with the hydraulic pump, an oil suction port of the hydraulic pump is communicated with the oil tank, an oil outlet of the hydraulic pump is communicated with an oil inlet of the electromagnetic directional valve, an oil outlet of the electromagnetic directional valve is communicated with the oil tank, a first working oil port of the electromagnetic directional valve is communicated with a rod cavity of the oil cavity, a second working oil port of the electromagnetic directional valve is communicated with a rodless cavity of the oil cavity,
the control module is used for controlling the first electromagnet and the second electromagnet of the electromagnetic directional valve to be powered on or powered off, when the first electromagnet of the electromagnetic directional valve is powered on and the second electromagnet of the electromagnetic directional valve is powered off, the oil inlet of the electromagnetic directional valve is communicated with the first working oil port, and the oil outlet of the electromagnetic directional valve is communicated with the second working oil port;
when a first electromagnet of the electromagnetic reversing valve is powered off and a second electromagnet of the electromagnetic reversing valve is powered on, an oil inlet of the electromagnetic reversing valve is communicated with the second working oil port, and an oil outlet of the electromagnetic reversing valve is communicated with the first working oil port;
when the first electromagnet of the electromagnetic reversing valve is powered off and the second electromagnet of the electromagnetic reversing valve is powered off, the oil inlet of the electromagnetic reversing valve is respectively communicated with the first working oil port and the second working oil port.
Optionally, the control module comprises a first detection unit, a second detection unit and a control circuit,
the first detection unit is used for detecting whether the bolt to be detected is in a pulling-out state, the bolt to be detected is closest to the oil cavity in the pulling-out state,
the second detection unit is used for detecting whether the bolt to be detected is in an insertion state, and in the insertion state, the bolt to be detected is farthest away from the oil cavity,
the control circuit is used for controlling the first electromagnet and the second electromagnet of the electromagnetic directional valve to be powered on or powered off based on the detection results of the first detection unit and the second detection unit.
Optionally, the first detection unit is a first proximity switch, and the second detection unit is a second proximity switch.
Optionally, the control circuit comprises a power supply, a first proximity switch branch, a second relay branch, a third relay branch, a first electromagnet branch and a second electromagnet branch connected in parallel,
the first proximity switch branch comprises a normally closed contact of the first proximity switch and a coil of a first relay which are connected in series,
the second proximity switch branch comprises a normally closed contact of the second proximity switch and a coil of a fourth relay which are connected in series,
the second relay branch comprises a coil of a second relay, a first button switch and a second button switch which are sequentially connected in series, the first button switch is connected with a first normally open contact of the second relay in parallel,
the third relay branch comprises a coil of a third relay, a normally open contact of a fourth relay and a normally open contact of the third relay which are sequentially connected in series, the first normally closed contact of the first relay is connected with a small branch in parallel, the small branch is a series branch of the normally open contact of the fourth relay and the normally open contact of the third relay,
the first electromagnet branch comprises a coil of the first electromagnet, a second normally open contact of the second relay and a normally closed contact of the third relay which are sequentially connected in series,
the second electromagnet branch comprises a coil of the second electromagnet, a third normally open contact of the second relay and a second normally closed contact of the first relay which are sequentially connected in series.
Optionally, the power supply is electrically connected to the working power supply interfaces of the first proximity switch and the second proximity switch, respectively.
Optionally, the test tool for the performance of the plug pin further comprises a jack, and the jack is used for applying radial pressure to the second end of the plug pin to be tested.
Optionally, the test fixture for the performance of the bolt further comprises a flange, the flange is used for being fixed at the first end of the bolt to be tested, and the second end of the oil rod is fixed at the flange.
Optionally, a gap between the plug pin cylinder and the plug pin to be tested is 30 mm.
Optionally, a gap between the plug pin cylinder and the plug pin to be tested is filled with grease.
Optionally, the test fixture for the performance of the bolt further comprises a bottom plate, and the mounting frame is fixed to the bottom plate.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the control module controls a first electromagnet and a second electromagnet of the electromagnetic directional valve to be powered on or powered off by inserting the bolt to be tested into the bolt barrel; when a first electromagnet of the electromagnetic reversing valve is electrified and a second electromagnet of the electromagnetic reversing valve is not electrified, an oil inlet of the electromagnetic reversing valve is communicated with a first working oil port, an oil outlet of the electromagnetic reversing valve is communicated with a second working oil port, at the moment, oil enters a rodless cavity from a rod cavity and is discharged, an oil rod is retracted towards the inside of an oil cavity, and a bolt extends out of a bolt cylinder to realize the pulling-out operation of the bolt; when the first electromagnet of the electromagnetic reversing valve is powered off and the second electromagnet of the electromagnetic reversing valve is powered on, the oil inlet of the electromagnetic reversing valve is communicated with the second working oil port, the oil outlet of the electromagnetic reversing valve is communicated with the first working oil port, at the moment, the oil outlet of the rod cavity is communicated with the oil inlet of the rodless cavity, the oil rod extends out of the oil cavity, and the bolt extends out of the bolt cylinder to realize the insertion operation of the bolt; the automatic plugging and unplugging of the plug pin are realized, when the plugging and unplugging time meets the test conditions, the plugging and unplugging action of the plug pin is stopped, the abrasion conditions of the plug pin and the plug pin barrel are observed, the optimized design of the plug pin is facilitated, the maintenance cost is reduced, and the service life of the hydraulic plug pin lifting system is prolonged; compared with the performance test of the bolt by adopting the whole hydraulic bolt lifting system, the test device has the advantages of simple structure and low cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 and fig. 2 are schematic structural views of a test tool for testing the performance of a plug pin provided by the invention;
fig. 3 is a schematic structural diagram of a control circuit according to an embodiment of the present invention.
In the drawings, there is shown in the drawings,
11 bolt hydro-cylinders, 12 bolts to be tested, 13 mounting brackets, 14 bolt cylinders, 15 jacks, LS1 first proximity switches, LS2 second proximity switches, SB1 first button switches, SB2 second button switches, 11a oil chambers, 11b oil rods, 16 motors, 17 hydraulic pumps, 18 oil tanks, 19 electromagnetic reversing valves, DT1 first electromagnets, DT2 second electromagnets, 13a supporting legs, 13b mounting frames, 10 bottom plates, 21 first proximity switch branches, 22 second proximity switch branches, 23 second relay branches, 24 third relay branches, 25 first electromagnet branches, 26 second electromagnet branches, K1 first relays, K2 second relays, K3 third relays and K4 fourth relays.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 and fig. 2 are schematic structural diagrams of a test tool for testing the performance of a plug pin provided by the invention. Referring to fig. 1 and 2, the test tool for the performance of the plug pin comprises: mounting bracket 13, bolt barrel 14, bolt hydro-cylinder 11, hydraulic module and control module. The plug cylinder 14 is fixed on the mounting frame 13, and the plug cylinder 14 is used for inserting the plug pin 12 to be tested and is in clearance fit with the plug pin 12 to be tested. The bolt oil cylinder 11 comprises an oil cavity 11a and an oil rod 11b, a first end of the oil cavity 11a is fixed on the mounting frame 13, a first end of the oil rod 11b is sleeved in the oil cavity 11a, a second end of the oil rod 11b extends out of a second end of the oil cavity 11a and is fixed at a first end of the bolt 12 to be tested, and the oil rod 11b is connected with the oil cavity 11a in a sliding mode. The hydraulic module comprises a motor 16, a hydraulic pump 17, an oil tank 18 and an electromagnetic directional valve 19, the motor 16 is electrically connected with the hydraulic pump 17, an oil suction port of the hydraulic pump 17 is communicated with the oil tank 18, an oil outlet of the hydraulic pump 17 is communicated with an oil inlet of the electromagnetic directional valve 19, an oil outlet of the electromagnetic directional valve 19 is communicated with the oil tank 18, a first working oil port of the electromagnetic directional valve 19 is communicated with a rod cavity of the oil cavity 11a, and a second working oil port of the electromagnetic directional valve 19 is communicated with a rodless cavity of the oil cavity 11 a. The control module is used for controlling the first electromagnet DT1 and the second electromagnet DT2 of the electromagnetic directional valve 19 to be powered on or powered off. When the first electromagnet DT1 of the electromagnetic directional valve 19 is electrified and the second electromagnet DT2 of the electromagnetic directional valve 19 is electrified, the oil inlet of the electromagnetic directional valve 19 is communicated with the first working oil port, and the oil outlet of the electromagnetic directional valve 19 is communicated with the second working oil port. When the first electromagnet DT1 of the electromagnetic directional valve 19 is powered off and the second electromagnet DT2 of the electromagnetic directional valve 19 is powered on, the oil inlet of the electromagnetic directional valve 19 is communicated with the second working oil port, and the oil outlet of the electromagnetic directional valve 19 is communicated with the first working oil port. When the first electromagnet DT1 of the electromagnetic directional valve 19 is powered off and the second electromagnet DT2 of the electromagnetic directional valve 19 is powered off, the oil inlet of the electromagnetic directional valve 19 is respectively communicated with the first working oil port and the second working oil port.
Referring to fig. 2, the mounting frame 13 may include two pairs of legs 13a and a mounting frame 13b, the two pairs of legs 13a supporting the latch cylinder 14, and the latch cylinder 14 fixed to the two pairs of legs 13 a. Each pair of legs 13a comprises two legs 13a, and two legs 13a of the same pair of legs 13a are V-shaped. The mounting frame 13b is U-shaped, both ends of the mounting frame 13b are fixed to the latch cylinder 14, respectively, and a space between the latch cylinder 14 and the mounting frame 13b is a mounting space of the oil chamber 11 a. The first end of the oil chamber 11a is fixed to the bottom of the mounting frame 13 b.
Specifically, the first end of the oil chamber 11a may have a bottom fixed to the mounting frame 13b by a pin.
The structure of mounting bracket 13 is comparatively simple, and area is less, and hydraulic module and control module etc. can be placed to the space between two pairs of landing legs 13a, can save space.
Illustratively, the test fixture for the performance of the plug pin further comprises a base plate 10. The mounting bracket 13 is fixed to the base plate 10.
Referring to fig. 2, the base plate 10 may be divided into 4 parts corresponding to 4 legs 13a included in two pairs of legs 13a of the mounting frame 13, and each leg 13a corresponds to a part of the base plate 10.
Specifically, each leg 13a may be fixed to the base plate 10 by a bolt.
Illustratively, the test fixture of bolt performance still includes the flange. The flange is used for being fixed in the first end of the bolt 12 that awaits measuring, and the second end of beam 11b is fixed in the flange.
Wherein the first end of the plug pin 12 is closer to the mounting frame 13b than the second end of the plug pin 12. Specifically, the second end of the oil rod 11b may be fixed to a flange by a pin, and the flange may be fixed to the first end of the to-be-tested plug 12 by a bolt.
Illustratively, the clearance between the pin barrel 14 and the pin 12 to be tested is 30 mm.
Illustratively, the gap between the plug cylinder 14 and the plug 12 to be tested is filled with grease. The grease prevents dry abrasion between the plug and the plug barrel 14.
Illustratively, the control module includes a first detection unit, a second detection unit, and a control circuit.
The first detection unit is used for detecting whether the bolt 12 to be detected is in a pulled-out state, and in the pulled-out state, the bolt 12 to be detected is closest to the oil cavity 11 a.
The second detection unit is used for detecting whether the bolt 12 to be detected is in an insertion state, and in the insertion state, the bolt 12 to be detected is farthest away from the oil cavity 11 a.
The control circuit is used for controlling the first electromagnet DT1 and the second electromagnet DT2 of the electromagnetic directional valve 19 to be powered on or powered off based on the detection results of the first detection unit and the second detection unit.
The electromagnetic directional valve 19 is illustratively a three-position, four-way electromagnetic directional valve 19. Referring to fig. 1, the motor 16 is connected with a hydraulic pump 17, and the hydraulic pump 17 is connected to an oil inlet of an electromagnetic directional valve 19 through a hydraulic pipeline to provide hydraulic power for the whole system. When the motor 16 is running, the hydraulic pump 17 draws oil from the oil tank 18 to supply oil to the electromagnetic directional valve 19. The oil inlet and the oil outlet of the bolt oil cylinder 11 are respectively connected with a first working oil port and a second working oil port of the electromagnetic directional valve 19, when a first electromagnet DT1 of the electromagnetic directional valve 19 is electrified, a rod cavity of the bolt oil cylinder 11 is filled with oil, a rodless cavity is filled with oil, an oil rod 11b is retracted into an oil cavity 11a, the oil cylinder is shortened, and the bolt performs the pulling-out action; when the second electromagnet DT2 of the electromagnetic directional valve 19 is powered on, oil enters the rodless cavity of the bolt oil cylinder 11, oil returns to the rod cavity, the oil rod 11b extends out of the oil cavity 11a, the oil cylinder extends, and the bolt performs an inserting action.
Illustratively, the first detection unit is a first proximity switch LS1, and the second detection unit is a second proximity switch LS 2.
Referring to fig. 1, both the first and second proximity switches LS1 and LS2 may be mounted on the mounting frame 13, for example, on the mounting frame 13 b. In this embodiment, the first proximity switch LS1 and the second proximity switch LS2 are both normally closed inductive proximity switches, and detect the unplugged and plugged states of the plug pin respectively, when the plug pin is unplugged, the first proximity switch LS1 is powered on, and the normally closed contact of the first proximity switch LS1 is opened; similarly, when the bolt is inserted, the second proximity switch LS2 is powered on, and the normally closed contact of the second proximity switch LS2 is opened.
The operating principle of the first proximity switch LS1 and the second proximity switch LS2 is as follows, when the metal bump J (mounted on the pin to be tested) reaches the action distance of the sensing surface of the proximity switch (the action distances of the proximity switches of different specifications are different, and the sensing distance of the proximity switch selected in the embodiment is 8mm), the proximity switch can be actuated without mechanical contact and any pressure, so that a corresponding control signal is provided for the control circuit. The approach switch is a switch type sensor (i.e. a non-contact switch), which has the characteristics of a travel switch and a microswitch, and has the characteristics of sensing performance, reliable action, stable performance, fast frequency response, long service life and the like.
Fig. 3 is a schematic structural diagram of a control circuit according to an embodiment of the present invention. Referring to fig. 3, the control circuit includes a power supply, a first proximity switch branch 21, a second proximity switch branch 22, a second relay branch 2323, a third relay branch 2423, a first electromagnet branch 25 and a second electromagnet branch 26 connected in parallel.
The first proximity switch branch 21 includes a coil that is connected in series with the normally closed contact of the first proximity switch LS1 and the first relay K1.
The second proximity switch branch 22 includes the normally closed contact of the second proximity switch LS2 and the coil of the fourth relay K4 in series.
The second relay branch 2323 includes a coil of the second relay K2, a first push-button switch SB1 and a second push-button switch SB2 which are connected in series, and the first push-button switch SB1 is connected in parallel with a first normally open contact of the second relay K2.
Third relay branch 2423 includes the coil of third relay K3, the normally open contact of fourth relay K4 and the normally open contact of third relay K3 that series connection in order, and first normally closed contact and the little branch of first relay K1 are parallelly connected, and little branch is the series connection branch of the normally open contact of fourth relay K4 and the normally open contact of third relay K3.
The first electromagnet branch 25 includes a coil of the first electromagnet DT1, the second normally open contact of the second relay K2, and the normally closed contact of the third relay K3, which are connected in series in this order.
The second electromagnet branch 26 includes a coil of the second electromagnet DT2, a third normally open contact of the second relay K2, and a second normally closed contact of the first relay K1, which are connected in series in this order.
Illustratively, referring to fig. 3, the power supply is also electrically connected to the operating power supply interfaces of the first and second proximity switches LS1 and LS2, respectively.
As previously shown, the first relay K1 includes two normally closed contacts, the second relay K2K2 includes three normally open contacts, the third relay K3 includes one normally open contact and one normally closed contact, and the fourth relay K4 includes one normally open contact. The first button switch SB1 is a normally open switch, and when the button is pressed, the first button switch SB1 is closed; the second push switch SB2 is a normally closed switch, and when the push button is pressed, the second push switch SB2 will be opened. In this embodiment, the first push switch SB1 is a start switch for automatically plugging and unplugging the plug, and the second push switch SB2 is a stop switch for automatically plugging and unplugging the plug.
The control principle of the control circuit is described below with reference to fig. 3.
Before testing, the initial state of the plug to be tested is neither in the inserted state nor in the pulled-out state. At this time, when the control circuit is powered on, the first proximity switch LS1 and the second proximity switch LS2 are both normally closed, the first relay K1 and the fourth relay K4 are powered on, the normally closed contact of K1 is opened, and the normally open contact of K4 is closed. The following flow is executed.
Step 1, press the first push switch SB 1. After the first button switch SB1 is pressed, the second relay K2 is electrified and self-locked, the normally open contact of K2 is closed, the first electromagnet DT1 of the electromagnetic directional valve is electrified, hydraulic oil enters from the rod cavity of the oil cylinder and exits from the rodless cavity, the bolt oil cylinder executes retraction action, and the bolt pulls out the bolt cylinder; at this time, relays K1, K2 and K4 get powered, and the third relay K3 loses power.
Step 2, when the first proximity switch LS1 detects that the plug pin is pulled out, the LS1 normally closed contact is disconnected, the first relay K1 is powered off, the K1 normally closed contact is closed, the third relay K3 and the fourth relay K4 are powered on, the K3 normally open contact is closed, the K3 normally closed contact is disconnected, the K4 normally open contact is closed, the second electromagnet DT2 of the electromagnetic reversing valve is powered on, the first electromagnet DT1 of the electromagnetic reversing valve is powered off, hydraulic oil enters from the rodless cavity and exits from the rod cavity, and the plug pin oil cylinder performs extension action; at this time, relays K3 and K4 are powered up, and K1 and K3 are powered down.
Step 3, in the process of extending the bolt oil cylinder, when the first proximity switch LS1 does not detect that the bolt is pulled out (because the bolt is gradually inserted and advances towards the insertion state), the first proximity switch LS1 is powered, the first relay K1 is powered again, then the relays K1, K2, K3 and K4 are all powered, the normally closed contact of the K3 on the first electromagnet DT1 branch is disconnected, the normally closed contact of the K1 on the second electromagnet DT2 branch is disconnected, and the DT1 and the DT2 of the electromagnetic reversing valve are not powered.
Step 4, further, as the relays K1, K2, K3 and K4 are all powered, the normally closed contact of K1 is opened, the normally open contact of K3 is closed and the normally open contact of K4 is closed on the branch circuit of the third relay K3; when the second proximity switch LS2 detects that the plug pin is inserted into the plug pin barrel (in an inserted state), the normally closed contact of LS2 is disconnected, the fourth relay K4 is de-energized, the normally open contact of K4 is disconnected, at this time, the disconnection K3 of the branch of the third relay K3 is also de-energized, the normally closed contact of K3 of the branch of the first electromagnet DT1 is closed, the first electromagnet DT1 of the electromagnetic directional valve is energized (the branch of the second electromagnet DT2 is also in an electroless state), the plug pin performs a pulling-out action, at this time, the relays K1 and K2 are energized, and the relays K3 and K4 are de-energized.
Step 5, in the plug pin oil cylinder pulling-out process, when the second proximity switch LS2 does not detect plug pin insertion (advances from the insertion state to the pulling-out state), the second proximity switch LS2 loses power, the LS2 normally closed contact is closed, the fourth relay K4 is powered again, at the moment, the relays K1, K2 and K4 are powered, and the third relay K3 loses power; a normally closed contact of K3 on a branch circuit of the first electromagnet DT1 is closed, a normally open contact of K2 on a branch circuit of the first electromagnet DT1 is closed, and the first electromagnet DT1 is electrified (the normally closed contact of K1 on a branch circuit of the second electromagnet DT2 is opened, and DT2 is not electrified); when the electromagnetic directional valve DT1 is electrified and the electromagnetic directional valve DT2 is not electrified, hydraulic oil enters from the rod cavity of the oil cylinder and exits from the rodless cavity, the bolt oil cylinder executes retraction action, and the bolt is pulled out of the bolt cylinder.
And (5) repeatedly executing the step (2).
In the above process, until the second button switch SB2 is pressed, the latch oil cylinder will cycle according to this, thereby realizing automatic plugging and unplugging of the latch.
Exemplarily, the test tool for the performance of the plug pin further comprises a jack, and the jack is used for applying radial pressure to the second end of the plug pin to be tested.
Radial load is provided for the bolt through the jack, loading can be carried out according to actual need, and the actual operation stress condition of the bolt is simulated.
In the embodiment, the bolt to be tested is inserted into the bolt barrel, and the control module controls the first electromagnet and the second electromagnet of the electromagnetic directional valve to be powered on or powered off; when a first electromagnet of the electromagnetic reversing valve is electrified and a second electromagnet of the electromagnetic reversing valve is not electrified, an oil inlet of the electromagnetic reversing valve is communicated with a first working oil port, an oil outlet of the electromagnetic reversing valve is communicated with a second working oil port, at the moment, oil enters a rodless cavity from a rod cavity and is discharged, an oil rod is retracted towards the inside of an oil cavity, and a bolt extends out of a bolt cylinder to realize the pulling-out operation of the bolt; when the first electromagnet of the electromagnetic reversing valve is powered off and the second electromagnet of the electromagnetic reversing valve is powered on, the oil inlet of the electromagnetic reversing valve is communicated with the second working oil port, the oil outlet of the electromagnetic reversing valve is communicated with the first working oil port, at the moment, the oil outlet of the rod cavity is communicated with the oil inlet of the rodless cavity, the oil rod extends out of the oil cavity, and the bolt extends out of the bolt cylinder to realize the insertion operation of the bolt; the automatic plugging and unplugging of the plug pin are realized, when the plugging and unplugging time meets the test conditions, the plugging and unplugging action of the plug pin is stopped, the abrasion conditions of the plug pin and the plug pin barrel are observed, the optimized design of the plug pin is facilitated, the maintenance cost is reduced, and the service life of the hydraulic plug pin lifting system is prolonged; compared with the performance test of the bolt by adopting the whole hydraulic bolt lifting system, the test device has the advantages of simple structure and low cost.
Furthermore, in the plugging process, the lubrication, abrasion and stress states of the bolt can be simulated by increasing a small amount of powder impurities, reducing lubricating grease or increasing radial load of the bolt and the like at the bolt, so that various actual external severe environment conditions (real ship operation) of the bolt can be simulated, the influence of the external conditions on the abrasion of the bolt can be recorded, a basis is provided for the optimized design and maintenance scheme, the optimized design is facilitated, the maintenance cost is reduced, and the service life of the hydraulic bolt lifting system is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a test fixture of bolt performance, its characterized in that, test fixture of bolt performance includes: mounting bracket (13), a bolt section of thick bamboo (14), bolt hydro-cylinder (11), hydraulic module, flange, jack and control module, a bolt section of thick bamboo (14) is fixed in mounting bracket (13), a bolt section of thick bamboo (14) are used for cartridge bolt (12) that await measuring, and with bolt (12) clearance fit awaits measuring, mounting bracket (13) include two pairs of landing legs (13a) and installing frame (13b), two pairs of landing leg (13a) are used for supporting bolt section of thick bamboo (14), bolt section of thick bamboo (14) are fixed in on two pairs of landing leg (13a), installing frame (13b) are the U type, the both ends of installing frame (13b) are fixed in respectively bolt section of thick bamboo (14), bolt section of thick bamboo (14) with installing space has between installing frame (13b), bolt hydro-cylinder (11) include oil pocket (11a) and oil pole (11b), the first end of oil pocket (11a) is fixed in mounting bracket (13), oil pocket (11a) are located in the installation space, just the first end of oil pocket (11a) articulates through the round pin axle the bottom of installing frame (13b), the first end suit of oil pole (11b) is in oil pocket (11a), the second end of oil pole (11b) stretches out the second end of oil pocket (11a) and be fixed in the first end of bolt (12) awaits measuring, the flange is used for being fixed in the first end of bolt (12) awaits measuring, the second end of oil pole (11b) articulates through the round pin axle the flange, oil pole (11b) with oil pocket (11a) connect with slidable, jack (15) are used for to the second end of bolt (12) awaits measuring applys radial pressure, hydraulic module includes motor (16), The hydraulic control system comprises a hydraulic pump (17), an oil tank (18) and an electromagnetic reversing valve (19), wherein a motor (16) is electrically connected with the hydraulic pump (17), an oil suction port of the hydraulic pump (17) is communicated with the oil tank (18), an oil outlet of the hydraulic pump (17) is communicated with an oil inlet of the electromagnetic reversing valve (19), an oil outlet of the electromagnetic reversing valve (19) is communicated with the oil tank (18), a first working oil port of the electromagnetic reversing valve (19) is communicated with a rod cavity of the oil cavity (11a), a second working oil port of the electromagnetic reversing valve (19) is communicated with a rodless cavity of the oil cavity (11a), the control module is used for controlling a first electromagnet (DT1) and a second electromagnet (DT2) of the electromagnetic reversing valve (19) to be powered on or powered off, and when the first electromagnet (DT1) of the electromagnetic reversing valve (19) is powered on and the second electromagnet (DT2) of the electromagnetic reversing valve (19) is powered off, an oil inlet of the electromagnetic directional valve (19) is communicated with the first working oil port, and an oil outlet of the electromagnetic directional valve (19) is communicated with the second working oil port; when a first electromagnet (DT1) of the electromagnetic directional valve (19) is powered off and a second electromagnet (DT2) of the electromagnetic directional valve (19) is powered on, an oil inlet of the electromagnetic directional valve (19) is communicated with the second working oil port, and an oil outlet of the electromagnetic directional valve (19) is communicated with the first working oil port; when the first electromagnet (DT1) of the electromagnetic directional valve (19) is powered off and the second electromagnet (DT2) of the electromagnetic directional valve (19) is powered off, the oil inlet of the electromagnetic directional valve (19) is respectively communicated with the first working oil port and the second working oil port,
the control module comprises a first detection unit, a second detection unit and a control circuit, the first detection unit is used for detecting whether the plug pin (12) to be detected is in a pulling-out state or not, in the pull-out state, the bolt (12) to be tested is nearest to the oil cavity (11a), the second detection unit is used for detecting whether the bolt (12) to be detected is in an inserting state or not, in the insertion state, the bolt to be tested (12) is farthest away from the oil cavity (11a), the control circuit is used for controlling the first electromagnet (DT1) and the second electromagnet (DT2) of the electromagnetic directional valve (19) to be electrified or deenergized based on the detection results of the first detection unit and the second detection unit, the first detection unit is a first proximity switch (LS1), the second detection unit is a second proximity switch (LS2),
the control circuit comprises a power supply, a first proximity switch branch (21), a second proximity switch branch (22), a second relay branch (23), a second relay branch (24), a first electromagnet branch (25) and a second electromagnet branch (26) which are connected in parallel,
the first proximity switch branch (21) comprises a coil connecting the normally closed contacts of the first proximity switch (LS1) and a first relay (K1) in series, the first relay (K1) comprises two normally closed contacts,
the second proximity switch branch (22) comprising in series the normally closed contact of the second proximity switch (LS2) and the coil of a fourth relay (K4), the fourth relay (K4) comprising a normally open contact,
the second relay branch (23) comprises a coil of a second relay (K2), a first button switch (SB1) and a second button switch (SB2) which are sequentially connected in series, the second relay (K2) comprises three normally open contacts, the first button switch (SB1) is connected in parallel with the first normally open contact of the second relay (K2), the first button switch (SB1) is a normally open switch, and the second button switch (SB2) is a normally closed switch,
the second relay branch (24) comprises a coil of a third relay (K3), a normally open contact of a fourth relay (K4) and a normally open contact of a third relay (K3) which are sequentially connected in series, the third relay (K3) comprises a normally open contact and a normally closed contact, a first normally closed contact of the first relay (K1) is connected with a small branch in parallel, and the small branch is a series branch of the normally open contact of the fourth relay (K4) and the normally open contact of the third relay (K3),
the first electromagnet branch (25) comprises a coil of the first electromagnet (DT1), a second normally open contact of the second relay (K2) and a normally closed contact of the third relay (K3) which are sequentially connected in series,
the second electromagnet branch (26) comprises a coil of the second electromagnet (DT2), a third normally open contact of the second relay (K2) and a second normally closed contact of the first relay (K1) which are connected in series in sequence.
2. The test tool of the bolt performance according to claim 1, characterized in that the power supply is electrically connected with the working power supply interfaces of the first proximity switch (LS1) and the second proximity switch (LS2), respectively.
3. The test tool of the plug pin performance according to claim 1 or 2, characterized in that the clearance between the plug pin cylinder (14) and the plug pin (12) to be tested is 30 mm.
4. The plug pin performance test tool according to claim 1 or 2, characterized in that a gap between the plug pin cylinder (14) and the plug pin (12) to be tested is filled with grease.
5. The test tool of the bolt performance according to claim 1 or 2, characterized in that the test tool of the bolt performance further comprises a bottom plate (10), and the mounting frame (13) is fixed on the bottom plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979283.1A CN111006856B (en) | 2019-10-15 | 2019-10-15 | Test tool for performance of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910979283.1A CN111006856B (en) | 2019-10-15 | 2019-10-15 | Test tool for performance of bolt |
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| CN111006856A CN111006856A (en) | 2020-04-14 |
| CN111006856B true CN111006856B (en) | 2022-08-05 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591012A (en) * | 2014-12-29 | 2015-05-06 | 三一汽车起重机械有限公司 | Hydraulic control system for single cylinder pin type telescopic boom and engineering machinery |
| CN110319872A (en) * | 2019-05-14 | 2019-10-11 | 武汉船用机械有限责任公司 | Bolt condition checkout gear |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4831830B2 (en) * | 2006-11-01 | 2011-12-07 | 三菱重工業株式会社 | Vibration meter mounting mechanism |
| CN103884498B (en) * | 2014-03-07 | 2017-02-22 | 奇瑞新能源汽车技术有限公司 | Plugging loop test bench of electromobile charger interface |
| CN103884932A (en) * | 2014-03-07 | 2014-06-25 | 奇瑞汽车股份有限公司 | Breaking capacity test bench of electromobile charger interface |
| CN208635829U (en) * | 2018-03-12 | 2019-03-22 | 中海油能源发展股份有限公司 | A kind of external bolt action detection device of sea jack-up unit hydraulic lifting system |
| CN208013378U (en) * | 2018-03-20 | 2018-10-26 | 湖北文理学院 | Test device and system |
-
2019
- 2019-10-15 CN CN201910979283.1A patent/CN111006856B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591012A (en) * | 2014-12-29 | 2015-05-06 | 三一汽车起重机械有限公司 | Hydraulic control system for single cylinder pin type telescopic boom and engineering machinery |
| CN110319872A (en) * | 2019-05-14 | 2019-10-11 | 武汉船用机械有限责任公司 | Bolt condition checkout gear |
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| CN111006856A (en) | 2020-04-14 |
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