CN210068632U - Full-stroke pressurization test device for crawler tensioning plunger oil cylinder of heading machine - Google Patents
Full-stroke pressurization test device for crawler tensioning plunger oil cylinder of heading machine Download PDFInfo
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- CN210068632U CN210068632U CN201920889901.9U CN201920889901U CN210068632U CN 210068632 U CN210068632 U CN 210068632U CN 201920889901 U CN201920889901 U CN 201920889901U CN 210068632 U CN210068632 U CN 210068632U
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Abstract
The utility model relates to a full stroke pressure test device of entry driving machine track tensioning plunger hydro-cylinder. The existing full-stroke pressurization test device for the crawler tensioning plunger oil cylinder of the heading machine is high in cost, large in size and high in power consumption. Therefore, this entry driving machine track tensioning plunger hydro-cylinder full stroke pressure test device includes pressure-bearing frame, hydraulic telescoping hydro-cylinder, two-way hydraulic pressure lock, single hydraulic control check valve, diverter valve, main valve and notes liquid rifle, the axial lead of the tensioning plunger hydro-cylinder that awaits measuring and the axial lead coincidence of hydraulic telescoping hydro-cylinder, together block between the roof and the bottom plate of pressure-bearing frame, the maximum length of the tensioning plunger hydro-cylinder that awaits measuring and the minimum length of hydraulic telescoping hydro-cylinder and the sum of the interval between < pressure-bearing frame roof and the bottom plate < the minimum length of the tensioning plunger hydro-cylinder that awaits measuring and the maximum length of hydraulic telescoping hydro-cylinder, the utility model discloses low in manufacturing cost, power consumptive few, small, light in weight, easy operation, convenient to use is applicable to in the detection experiment of the.
Description
Technical Field
The utility model relates to a full stroke pressure test device of entry driving machine track tensioning plunger hydro-cylinder.
Background
The track tensioning oil cylinder of the fully-mechanized excavating machine is a plunger type oil cylinder, a newly-fed tensioning oil cylinder or an overhauled tensioning oil cylinder is difficult to carry out a loading test, a loading test is generally carried out in a frame or on a 300T press machine, the consumed electric energy is more, the safety is high, and a dynamic full-stroke loading test is not easy to realize.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to overcome prior art's above-mentioned defect, provide a tunneller track tensioning plunger hydro-cylinder full stroke pressure test device.
In order to solve the technical problem, the full-stroke pressurization test device for the crawler tensioning plunger oil cylinder of the heading machine comprises a pressure-bearing frame, a hydraulic telescopic oil cylinder, a two-way hydraulic lock, a single hydraulic control one-way valve, a switching valve, a main valve and a liquid injection gun, wherein the two-way hydraulic lock is composed of two hydraulic control one-way valves connected in parallel, a control oil way interface of any one hydraulic control one-way valve is communicated with an oil inlet interface of the other hydraulic control one-way valve through a necessary pipeline, the liquid injection gun is communicated with a main high-pressure liquid pipe through a hose, the main valve is arranged,
the hydraulic telescopic oil cylinder comprises a cylinder body, a telescopic rod and a piston, wherein the piston is arranged in the cylinder body to divide the internal space of the cylinder body into a front chamber and a rear chamber, one end of the telescopic rod is connected to the piston, the other end of the telescopic rod penetrates through the front chamber and extends out of the cylinder body, the front chamber and the rear chamber are respectively provided with a hydraulic fluid inlet and a hydraulic fluid outlet, the hydraulic fluid inlet and the hydraulic fluid outlet of the front chamber are communicated with an oil outlet interface of one hydraulic control one-way valve of the two-way hydraulic lock, the hydraulic fluid inlet and the hydraulic fluid outlet of the rear chamber,
the single hydraulic control one-way valve comprises a valve body and a valve core, wherein the valve body is provided with an oil inlet interface, a valve cavity, an oil outlet interface and a control oil way interface, the axial lead of the tensioning plunger cylinder to be tested is superposed with the axial lead of the hydraulic telescopic cylinder and is arranged in a straight line to be clamped between a top plate and a bottom plate of the pressure-bearing frame, the tensioning plunger cylinder to be tested is provided with a liquid inlet and outlet which is communicated with the oil outlet interface of the single hydraulic control one-way valve,
the oil inlet ports of the two hydraulic control one-way valves and the oil inlet port of the single hydraulic control one-way valve are respectively provided with a quick connection bayonet matched with the liquid injection gun;
the sum of the maximum length of the tensioning plunger oil cylinder to be tested and the minimum length of the hydraulic telescopic oil cylinder is less than the sum of the minimum length of the tensioning plunger oil cylinder to be tested and the maximum length of the hydraulic telescopic oil cylinder.
The attached figure 1 of the specification shows that this entry driving machine track tensioning plunger hydro-cylinder full stroke pressurization test device is whole to be constructed, the utility model discloses a simple parts such as pressure-bearing frame, hydraulic stretching hydro-cylinder, two-way hydraulic pressure lock, single hydraulic control check valve have replaced the 300T press. The design has low cost, utilizes sufficient high-pressure liquid data of mine enterprises to replace the original electric energy, and has less power consumption and small volume.
Preferably, reinforcing ribs are arranged at four corners of the pressure-bearing frame respectively, the root of the cylinder body of the hydraulic telescopic cylinder is fixed below the top plate of the pressure-bearing frame, and the tensioning plunger cylinder to be tested is clamped between the outer end of the telescopic rod of the hydraulic telescopic cylinder and the bottom plate of the pressure-bearing frame. By the design, the mechanical strength is high.
Preferably, a scale is arranged on one side of the pressure-bearing frame, the vertex of the scale is 0 point, scale indexes are respectively marked below 0 point, and when the outer end of the telescopic rod of the tensioning plunger oil cylinder to be tested is positioned at the extension stroke end point, the outer end of the telescopic rod is just flush with the 0 point of the scale. By the design, observation and measurement are convenient.
And optimally, a pressure gauge is further arranged on a pipeline between the liquid inlet and outlet of the to-be-tested tensioning plunger oil cylinder and the single hydraulic control one-way valve. By the design, the pressure change of the tensioning plunger oil cylinder in different extension length states can be observed conveniently.
As an optimization, it is also equipped with a chronograph. By the design, pressure changes of the tensioning plunger oil cylinder in unit time (such as 5 minutes or half hour) under different extension length states can be observed conveniently.
The utility model discloses utilize aforementioned entry driving machine track tensioning plunger hydro-cylinder full stroke pressurization test device to carry out full stroke pressurization test method to entry driving machine track tensioning plunger hydro-cylinder, including following step:
①, placing the tensioning plunger cylinder to be tested between the outer end of the telescopic rod of the hydraulic telescopic cylinder and the bottom plate of the pressure-bearing frame, making the axial leads of the two coincide, opening the main valve and closing the switching valve;
②, hand-held liquid injection gun, moving the muzzle of the gun to and clamping on the fast-connection bayonet communicated with the front chamber, then starting to inject liquid, one path of the high-pressure liquid enters the control oil path interface of the pilot-operated check valve communicated with the rear chamber, thereby opening the pilot-operated check valve communicated with the rear chamber, the other path directly enters the front chamber, pushing the piston to move upwards, and driving the telescopic rod of the hydraulic telescopic oil cylinder to contract to the shortest state;
then stopping filling liquid, holding a liquid filling gun by hand, moving the gun mouth to the position, clamping the gun mouth on a quick-connection bayonet of a single hydraulic control one-way valve, starting filling liquid, extending the tensioning plunger oil cylinder to be tested to the longest state, stopping filling liquid again, holding the liquid filling gun by hand, moving the gun mouth of the liquid filling gun to the position, clamping the gun mouth on the quick-connection bayonet communicated with the rear chamber, filling liquid, pressing the lower end of a telescopic rod of a hydraulic telescopic oil cylinder on the tensioning plunger oil cylinder to be tested, extruding the telescopic rod, observing the pressure displayed by a pressure gauge until the pressure displayed by the pressure gauge reaches a preset pressure, stopping filling liquid, starting a timing meter, and judging that the tensioning plunger oil cylinder to be tested works normally under the state after the preset time and the pressure displayed by the pressure gauge does not change obviously; otherwise, judging that the tensioning plunger cylinder to be tested is unqualified;
③, opening the switching valve, holding the liquid injection gun, moving the gun mouth of the liquid injection gun to and clamping the gun mouth on the quick-connect bayonet communicated with the rear chamber, injecting liquid, expanding the rear chamber of the hydraulic telescopic cylinder, contracting the front chamber, extending the telescopic rod, pressing the control oil path of the single-hydraulic one-way valve, reversely conducting the single-hydraulic one-way valve, contracting the tensioning plunger cylinder to be tested under the compression of the hydraulic telescopic cylinder, discharging the liquid inside through the single-hydraulic one-way valve and the quick-connect bayonet,
when the tensioning plunger oil cylinder to be tested contracts by one N of the extension stroke of the tensioning plunger oil cylinder, stopping liquid injection, starting a timing meter, and judging that the tensioning plunger oil cylinder to be tested works normally under the state when the pressure displayed by the pressure meter does not change obviously after the preset time; otherwise, judging that the tensioning plunger oil cylinder to be tested is unqualified, wherein N is a positive integer and is more than or equal to 3 and less than or equal to 12,
④, repeating step ③ until the to-be-tested tension plunger cylinder contracts to a length which is one N times longer than the shortest length and extends, stopping filling liquid, continuing to fill liquid into the quick-connection bayonet communicated with the rear chamber by using a liquid filling gun, continuing to extend the telescopic rod of the hydraulic telescopic cylinder, pressing the to-be-tested tension plunger cylinder until the pressure displayed by the pressure gauge reaches a preset pressure, stopping filling liquid, starting a timing meter, judging that the to-be-tested tension plunger cylinder works normally in the state after the preset time and otherwise judging that the to-be-tested tension plunger cylinder is unqualified,
⑤, opening the switch valve, continuing to inject liquid into the fast-connection bayonet communicated with the back chamber by the liquid injection gun, the tension plunger oil cylinder to be tested is contracted to the shortest state under the compression of the hydraulic telescopic oil cylinder, then suspending the liquid injection, closing the switch valve, holding the liquid injection gun by hand, moving the gun mouth of the liquid injection gun to and clamping the gun mouth on the fast-connection bayonet communicated with the front chamber of the hydraulic telescopic oil cylinder, starting to inject liquid, enabling the telescopic rod driving the hydraulic telescopic oil cylinder to be contracted to the shortest state, finally closing the main valve, and detaching the tension plunger oil cylinder to be tested from the pressure-bearing frame.
The design has the advantages of simple operation, low cost and low power consumption.
The utility model discloses entry driving machine track tensioning plunger hydro-cylinder full stroke pressure test device has that the cost of manufacture is low, power consumptive few, use cost is low, and is small, light in weight, easy operation, convenient to use's advantage extensively is applicable to in the detection experiment of the track tensioning plunger hydro-cylinder of colliery entry driving machine.
Drawings
The utility model discloses entry driving machine track tensioning plunger hydro-cylinder full stroke pressure test device does further explanation below with the attached drawing:
FIG. 1 is a schematic diagram of ① th step of the full-stroke pressurization test method for the track tensioning plunger cylinder of the heading machine;
FIG. 2 is a schematic structural diagram of the full-stroke pressurization test device for the track tensioning plunger cylinder of the heading machine;
FIG. 3 is a schematic structural diagram of the full-stroke pressurization test device for the track tensioning plunger cylinder of the heading machine;
fig. 4 is a schematic structural diagram of the full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine.
Fig. 5 is a schematic structural diagram of the full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine.
In the figure: 1 is a pressure-bearing frame, 101 is a top plate of the pressure-bearing frame 1, 102 is a bottom plate of the pressure-bearing frame 1, 2 is a hydraulic telescopic oil cylinder, 21 is a telescopic rod, 22 is a piston, 23 is a front chamber, 24 is a rear chamber, 25 is a hydraulic liquid inlet and outlet, 3 is a bidirectional hydraulic lock, 31 is a hydraulic control one-way valve, 32 is a control oil way interface of the hydraulic control one- way valve 31, 33 is an oil inlet interface of the hydraulic control one- way valve 31, 34 is an oil outlet interface of the hydraulic control one-way valve 31, 4 is a single hydraulic control one-way valve, 41 is an oil inlet interface on the single hydraulic control one-way valve 4, 42 is an oil outlet interface on the single hydraulic control one-way valve 4, 43 is a control oil way interface on the single hydraulic control one-way valve 4, 5 is a switching valve, 6 is a main valve, 7 is a gun injection, 8 is a hose, 9 is a main high-pressure liquid pipe, 10 is a tensioning plunger oil cylinder, 14 is a scale, 15 is a pressure gauge, 16 is a chronograph, and L is a distance between the top plate 101 and the bottom plate 102 of the pressure-bearing frame 1.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1-5, the full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine comprises a pressure-bearing frame 1, a hydraulic telescopic cylinder 2, a two-way hydraulic lock 3, a single hydraulic control one-way valve 4, a switching valve 5, a main valve 6 and a liquid injection gun 7, wherein the two-way hydraulic lock 3 is composed of two parallel hydraulic control one-way valves 31, a control oil way interface 32 of any one hydraulic control one-way valve 31 is communicated with an oil inlet interface 33 of the other hydraulic control one-way valve 31 through a necessary pipeline, the liquid injection gun 7 is communicated with a main high-pressure liquid pipe 9 through a hose 8, the main valve 6 is arranged on the main high-pressure liquid,
the hydraulic telescopic cylinder 2 comprises a cylinder body, a telescopic rod 21 and a piston 22, wherein the piston 22 is arranged in the cylinder body to divide the inner space of the cylinder body into a front chamber 23 and a rear chamber 24, one end of the telescopic rod 21 is connected to the piston 22, the other end of the telescopic rod passes through the front chamber 23 and extends out of the cylinder body, the front chamber 23 and the rear chamber 24 are respectively provided with a hydraulic fluid inlet and outlet 25, the hydraulic fluid inlet and outlet 25 of the front chamber 23 is communicated with an oil outlet port 34 of one hydraulic control one-way valve 31 of the two-way hydraulic lock 3, the hydraulic fluid inlet and outlet 25 of the rear chamber 24 is communicated with an oil outlet port 34 of the other hydraulic control,
the single hydraulic control one-way valve 4 comprises a valve body and a valve core, an oil inlet port 41, a valve cavity, an oil outlet port 42 and a control oil way port 43 are arranged on the valve body, the axial lead of the tensioning plunger cylinder 10 to be tested is superposed with the axial lead of the hydraulic telescopic cylinder 2 and is arranged in a straight line to be clamped between a top plate 101 and a bottom plate 102 of the pressure-bearing frame 1, a liquid inlet and outlet port 11 is arranged on the tensioning plunger cylinder 10 to be tested, the liquid inlet and outlet port 11 is communicated with the oil outlet port 42 of the single hydraulic control one-way valve 4,
the oil inlet interfaces 33 of the two hydraulic control one-way valves 31 and the oil inlet interface 41 of the single hydraulic control one-way valve 4 are respectively provided with a quick-connection bayonet 12 matched with the liquid injection gun 7.
The sum of the maximum length of the tensioning plunger cylinder 10 to be tested and the minimum length of the hydraulic telescopic cylinder 2 is less than the sum of the minimum length of the tensioning plunger cylinder 10 to be tested and the maximum length of the hydraulic telescopic cylinder 2, and the sum of the distance L between the top plate 101 and the bottom plate 102 of the pressure-bearing frame 1 is less than the sum of the minimum length of the tensioning plunger cylinder 10 to be tested and the maximum length of.
Reinforcing ribs 13 are respectively arranged at four corners of the pressure-bearing frame 1, the root of the cylinder body of the hydraulic telescopic cylinder 2 is fixed below a top plate 101 of the pressure-bearing frame 1, and the tensioning plunger cylinder 10 to be tested is clamped between the outer end of a telescopic rod 21 of the hydraulic telescopic cylinder 2 and a bottom plate 102 of the pressure-bearing frame 1.
A scale 14 is arranged on one side of the pressure-bearing frame 1, the vertex of the scale 14 is 0 point, scale indexes are respectively marked below 0 point, and when the outer end of the telescopic rod of the tensioning plunger cylinder 10 to be tested is positioned at the extending stroke end point (when the tensioning plunger cylinder to be tested is in the longest state), the outer end of the telescopic rod is just flush with the 0 point of the scale.
And a pressure gauge 15 and a timing meter 16 are also arranged on a pipeline between the liquid inlet and outlet 11 of the tensioning plunger oil cylinder 10 to be tested and the single hydraulic control one-way valve 4.
The full-stroke pressurization test method for the crawler tensioning plunger oil cylinder of the heading machine by utilizing the full-stroke pressurization test device for the crawler tensioning plunger oil cylinder of the heading machine comprises the following steps:
①, placing the tensioning plunger cylinder 10 to be tested between the outer end of the telescopic rod 21 of the hydraulic telescopic cylinder 2 and the bottom plate 102 of the pressure-bearing frame 1, making the axial leads of the two coincide, opening the main valve 6, and closing the switching valve 5, as shown in fig. 1;
②, the liquid injection gun 7 is held by hand, the muzzle of the liquid injection gun 7 is moved to and clamped on the quick connection bayonet 12 communicated with the front chamber 23, then liquid injection is started, one path of the high-pressure liquid enters the control oil path interface 33 of the hydraulic control one-way valve 31 communicated with the rear chamber 24, so as to open the hydraulic control one-way valve 31 communicated with the rear chamber 24, and the other path of the high-pressure liquid directly enters the front chamber 23, pushes the piston 22 to move upwards, and drives the telescopic rod 21 of the hydraulic telescopic oil cylinder 2 to contract to the shortest state;
then stopping filling, holding the liquid filling gun 7 by hand, moving the gun mouth to the position, clamping the gun mouth to the quick-connection clamping opening 12 of the single hydraulic control one-way valve 4, starting filling, extending the tensioning plunger cylinder 10 to be tested to the longest state as shown in fig. 2, stopping filling again, holding the liquid filling gun 7 by hand, moving the gun mouth of the liquid filling gun 7 to the position, clamping the gun mouth to the quick-connection clamping opening 12 communicated with the rear chamber 24, filling liquid, pressing the lower end of the telescopic rod 21 of the hydraulic telescopic cylinder 2 on the tensioning plunger cylinder 10 to be tested, extruding the liquid, observing the pressure displayed by the pressure gauge 15 until the pressure displayed by the pressure gauge reaches a preset pressure, stopping filling, starting the timing meter 16, judging that the pressure displayed by the pressure gauge 15 does not change obviously after a preset time, and judging that the tensioning plunger cylinder 10 to be tested works normally in the state; otherwise, judging that the tensioning plunger cylinder 10 to be tested is unqualified.
③, opening the switching valve 5, holding the liquid injection gun 7 by hand, moving the muzzle of the liquid injection gun 7 to and clamping on the quick-connection bayonet 12 communicated with the rear chamber 24, injecting liquid, at this time, expanding the rear chamber 24 of the hydraulic telescopic cylinder 2, contracting the front chamber 23, extending the telescopic rod 21, pressing the 4 control oil circuit of the single hydraulic control one-way valve, reversely conducting the single hydraulic control one-way valve, contracting the tensioning plunger cylinder to be tested under the compression of the hydraulic telescopic cylinder, and discharging the liquid inside through the single hydraulic control one-way valve and the quick-connection bayonet thereof, as shown in fig. 3.
When the tensioning plunger oil cylinder to be tested contracts by one N of the extension stroke, liquid injection is suspended, the switching valve is closed, and then liquid injection is continuously carried out on the quick-connection bayonet communicated with the rear chamber by using the liquid injection gun, so that the telescopic rod of the hydraulic telescopic oil cylinder continuously extends outwards to press the tensioning plunger oil cylinder to be tested.
Stopping filling liquid until the pressure displayed by the pressure gauge reaches a preset pressure, starting a timing meter, and judging that the tensioning plunger oil cylinder to be tested works normally under the state when the pressure displayed by the pressure gauge does not change obviously after the preset time; otherwise, judging that the tensioning plunger oil cylinder to be tested is unqualified, wherein N is a positive integer and is more than or equal to 3 and less than or equal to 12,
④, repeating step ③ until the to-be-tested tension plunger cylinder contracts to a length which is one N times longer than the shortest length and extends, stopping filling liquid, closing the switching valve, as shown in figure 4, continuing to fill liquid into the quick-connecting bayonet communicated with the rear chamber by using the liquid filling gun, continuing to extend the telescopic rod of the hydraulic telescopic cylinder, pressing the to-be-tested tension plunger cylinder until the pressure displayed by the pressure gauge reaches the preset pressure, stopping filling liquid, starting the timing meter, after the preset time, the pressure displayed by the pressure gauge has no obvious change, judging that the to-be-tested tension plunger cylinder works normally under the state, otherwise, judging that the to-be-tested tension plunger cylinder is unqualified,
⑤, opening the switch valve, continuing to inject liquid into the fast-connection bayonet communicated with the back chamber by the liquid injection gun, the tension plunger oil cylinder to be tested is contracted to the shortest state under the compression of the hydraulic telescopic oil cylinder, as shown in fig. 5, then suspending the liquid injection, closing the switch valve, holding the liquid injection gun by hand, moving the gun mouth of the liquid injection gun to and clamping on the fast-connection bayonet communicated with the front chamber of the hydraulic telescopic oil cylinder, starting the liquid injection, causing the telescopic rod driving the hydraulic telescopic oil cylinder to contract to the shortest state, finally closing the main valve, and detaching the tension plunger oil cylinder to be tested from the pressure-bearing frame, as shown in fig. 1.
Claims (5)
1. The utility model provides a full stroke pressurization test device of entry driving machine track tensioning plunger hydro-cylinder which characterized in that: the hydraulic control hydraulic lock comprises a pressure-bearing frame, a hydraulic telescopic oil cylinder, a two-way hydraulic lock, a single hydraulic control one-way valve, a switching valve, a main valve and a liquid injection gun, wherein the two-way hydraulic lock is composed of two parallel hydraulic control one-way valves, a control oil path interface of any one hydraulic control one-way valve is communicated with an oil inlet interface of the other hydraulic control one-way valve through a necessary pipeline, the liquid injection gun is communicated with a main high-pressure liquid pipe through a hose, the main valve is arranged on the main high-,
the hydraulic telescopic oil cylinder comprises a cylinder body, a telescopic rod and a piston, wherein the piston is arranged in the cylinder body to divide the internal space of the cylinder body into a front chamber and a rear chamber, one end of the telescopic rod is connected to the piston, the other end of the telescopic rod penetrates through the front chamber and extends out of the cylinder body, the front chamber and the rear chamber are respectively provided with a hydraulic fluid inlet and a hydraulic fluid outlet, the hydraulic fluid inlet and the hydraulic fluid outlet of the front chamber are communicated with an oil outlet interface of one hydraulic control one-way valve of the two-way hydraulic lock, the hydraulic fluid inlet and the hydraulic fluid outlet of the rear chamber,
the single hydraulic control one-way valve comprises a valve body and a valve core, wherein the valve body is provided with an oil inlet interface, a valve cavity, an oil outlet interface and a control oil way interface, the axial lead of the tensioning plunger cylinder to be tested is superposed with the axial lead of the hydraulic telescopic cylinder and is arranged in a straight line to be clamped between a top plate and a bottom plate of the pressure-bearing frame, the tensioning plunger cylinder to be tested is provided with a liquid inlet and outlet which is communicated with the oil outlet interface of the single hydraulic control one-way valve,
the oil inlet ports of the two hydraulic control one-way valves and the oil inlet port of the single hydraulic control one-way valve are respectively provided with a quick connection bayonet matched with the liquid injection gun;
the sum of the maximum length of the tensioning plunger oil cylinder to be tested and the minimum length of the hydraulic telescopic oil cylinder is less than the sum of the minimum length of the tensioning plunger oil cylinder to be tested and the maximum length of the hydraulic telescopic oil cylinder.
2. The full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine according to claim 1, which is characterized in that: reinforcing ribs are arranged at four corners of the pressure-bearing frame respectively, the root of a cylinder body of the hydraulic telescopic oil cylinder is fixed below a top plate of the pressure-bearing frame, and the tensioning plunger oil cylinder to be tested is clamped between the outer end of a telescopic rod of the hydraulic telescopic oil cylinder and a bottom plate of the pressure-bearing frame.
3. The full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine according to claim 1, which is characterized in that: and a scale is arranged on one side of the pressure-bearing frame, the vertex of the scale is 0 point, scale indexes are respectively marked below 0 point, and when the outer end of the telescopic rod of the tensioning plunger oil cylinder to be tested is positioned at the extension stroke end point, the outer end of the telescopic rod is just flush with the 0 point of the scale.
4. The full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine according to claim 1, which is characterized in that: and a pressure gauge is also arranged on a pipeline between the liquid inlet and outlet of the to-be-tested tensioning plunger oil cylinder and the single hydraulic control one-way valve.
5. The full-stroke pressurization test device for the crawler tensioning plunger cylinder of the heading machine according to claim 4, which is characterized in that: it is also equipped with a chronograph.
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| CN201920889901.9U CN210068632U (en) | 2019-06-11 | 2019-06-11 | Full-stroke pressurization test device for crawler tensioning plunger oil cylinder of heading machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131241A (en) * | 2019-06-11 | 2019-08-16 | 兖州煤业股份有限公司 | Development machine crawler tensioning plunger cylinder total travel pressure test device and its method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131241A (en) * | 2019-06-11 | 2019-08-16 | 兖州煤业股份有限公司 | Development machine crawler tensioning plunger cylinder total travel pressure test device and its method |
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