CN217931093U - Hydraulic prop strength test frame - Google Patents

Abstract

The application discloses a hydraulic prop strength test frame, which comprises a vertical frame, a winch and a pressure test machine, wherein the pressure test machine is used for being communicated with a prop cavity of a hydraulic prop to be tested; the vertical frame is provided with a loading cylinder and a top block positioned above the loading cylinder; the loading cylinder and the jacking block are used for respectively clamping two ends of the hydraulic prop to be tested so as to realize clamping of the hydraulic prop to be tested; the vertical rack is provided with a plurality of top block mounting stations for fixing the top blocks along the height direction; the winch is provided with a winch lifting hook which is hung downwards from the top of the self-standing machine frame and used for hooking the top block and the hydraulic prop to be tested. The hydraulic prop strength test frame can be used for various tests of hydraulic props to be tested such as mining single hydraulic props. This hydraulic prop intensity test frame utilizes vertical frame, capstan winch loading cylinder and kicking block light, the hydraulic prop that awaits measuring of the various models of quick dress card, and then utilizes loading cylinder and pressure testing machine to accomplish all kinds of intensity tests to the hydraulic prop that awaits measuring that the dress card is good safe and reliable, reduces operating personnel's working strength, improves the operation security.

Description

Hydraulic prop strength test frame

Technical Field

The application relates to the field of mining machinery, in particular to a hydraulic prop strength test frame.

Background

The single hydraulic prop is one of the necessary devices in mining.

The single hydraulic prop is assembled by a plurality of accessories such as a hydraulic cylinder, a plunger, a base, a handle body, a top cover, a piston, a pin, a steel wire and the like; the piston at the bottom of the plunger is sealed with the hydraulic cylinder, so that the plunger extends out or retracts in the hydraulic cylinder, and the work of the coal face under the coal mine is finished.

When the single hydraulic prop is subjected to factory inspection, various strength tests such as yielding tests need to be carried out. The existing test equipment for the delivery inspection of the single hydraulic prop has single function and needs to comprehensively use a plurality of sets of test equipment; the test performance is limited, and serious deformation is generated after long-term use, for example, a top block for clamping the single hydraulic prop is easy to be adjusted due to blocking, and the top block has a large adjustment range for meeting the test requirement of the large-size single hydraulic prop, so that the operation burden of an operator is obviously increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic prop intensity test frame can realize safely, fast, easily that the hydraulic prop is waited for to survey multinomial experiment of hydraulic prop to hydraulic prop.

In order to achieve the purpose, the application provides a hydraulic prop strength test frame which comprises a vertical frame, a winch arranged on the vertical frame and a pressure test machine used for being communicated with a prop cavity of a hydraulic prop to be tested; the vertical frame is provided with a loading cylinder and a top block positioned above the loading cylinder; the loading cylinder and the jacking block are used for respectively clamping two ends of the hydraulic prop to be tested so as to realize clamping of the hydraulic prop to be tested; the vertical rack is provided with a plurality of top block mounting stations for fixing the top blocks along the height direction; the winch is provided with a winch lifting hook which is hung downwards from the top of the self-standing machine frame and used for hooking the top block and the hydraulic prop to be tested.

In some embodiments, the vertical frame comprises a vertically mounted miner steel column; the cable drum of the winch is arranged in the middle of the steel upright post of the miner along the height direction.

In some embodiments, the vertical frame comprises two sets of parallel and spaced apart miner steel uprights; any one group of the steel upright posts for the miner is provided with a plurality of top plates along the height direction, and all the top plates of the two groups of the steel upright posts for the miner are equal in height and distributed in opposite directions to form top block mounting stations.

In some embodiments, the top block comprises a top block fixing frame and a support mounting clamp arranged on the top block fixing frame; the column mounting chucks are distributed downwards; a locking piece is arranged between the top block fixing frame and any top plate.

In some embodiments, the two ends of the top block holder are respectively slidably engaged with the two sets of miner steel studs.

In some embodiments, a plurality of rails are arranged between the two groups of the steel upright posts, and all the rails are attached and fixed on the rear side surfaces of the two groups of the steel upright posts.

In some embodiments, the winch is in particular a self-locking winch.

In some embodiments, the output end of the pressure testing machine is provided with a stop valve and a pressure gauge.

Compared with the background art, the hydraulic prop strength test stand provided by the application comprises a vertical stand, a winch arranged on the vertical stand and a pressure test machine communicated with a prop cavity of a hydraulic prop to be tested; the vertical frame is provided with a loading cylinder and a top block positioned above the loading cylinder; the loading cylinder and the jacking block are used for respectively clamping two ends of the hydraulic prop to be tested so as to realize clamping of the hydraulic prop to be tested; the vertical rack is provided with a plurality of top block mounting stations for fixing the top blocks along the height direction; the winch is provided with a winch lifting hook which is hung downwards from the top of the self-standing machine frame and used for hooking the top block and the hydraulic prop to be tested.

The hydraulic prop strength test frame that this application provided utilizes kicking block and loading cylinder to realize the dress card location of hydraulic prop that awaits measuring in vertical frame. When the hydraulic prop to be tested is clamped, the winch and the winch lifting hook can draw the jacking block to move between different jacking block installation stations of the vertical rack, the clamping requirements of the hydraulic prop to be tested of different models are met, the winch and the winch lifting hook also can draw the hydraulic prop to be tested to move between the jacking block and the loading cylinder, and an operator can conveniently clamp the hydraulic prop to be tested to the vertical rack quickly.

The hydraulic prop strength test frame that this application provided accessible loading cylinder exerts pressure to the hydraulic prop that awaits measuring that the dress card is good, still can let in liquid to the hydraulic prop that awaits measuring that the dress card is good through the pressure testing machine, can accomplish including letting the multiple strength test including the pressure test. Therefore, the hydraulic prop strength test frame can quickly and safely carry out various strength tests on the mining single hydraulic prop waiting for measuring the hydraulic prop after single clamping.

In conclusion, the hydraulic prop strength test frame is easy to operate, the operation strength of operators can be reduced, the operation safety is improved, and various tests of hydraulic props to be tested of different models are met.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a hydraulic prop strength test stand according to an embodiment of the present disclosure;

fig. 2 is a partially enlarged view of a hydraulic prop strength test frame provided in an embodiment of the present application at a top block.

Wherein, 11-steel upright post of the miner, 12-top plate, 13-transverse bar, 4-loading cylinder, 5-top block, 51-top block fixing frame, 52-post clamping head.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a hydraulic prop strength testing stand according to an embodiment of the present disclosure; fig. 2 is a partially enlarged view of a hydraulic prop strength test frame provided in an embodiment of the present application at a top block.

Referring to fig. 1, the present application provides a hydraulic prop strength testing stand, which includes a vertical frame and a pressure testing machine; the vertical type frame is provided with a winch, a top block 5 and a loading cylinder 4, wherein the top block 5 is positioned above the loading cylinder 4, and the winch is provided with a winch lifting hook which is hung downwards from the top of the self-standing type frame; the pressure testing machine is used for connecting the hydraulic prop to be tested clamped on the vertical rack, and when a hydraulic outlet of the pressure testing machine is communicated with the prop cavity of the hydraulic prop to be tested, the pressure testing machine can introduce liquid into the prop cavity of the hydraulic prop to be tested. Of course, the hydraulic prop strength test frame may further include a power supply system, a hydraulic system and parts thereof related to the loading cylinder 4, the pressure testing machine and other devices.

In this embodiment, the top block 5 and the loading cylinder 4 are distributed at intervals along the height direction of the vertical rack, and are used for clamping the hydraulic prop to be tested in the hydraulic prop strength test rack, that is, the top block 5 and the loading cylinder 4 can be clamped at two ends of the hydraulic prop to be tested respectively, so that the hydraulic prop to be tested and the vertical rack are fixed relatively. The ejector block 5 is located above the loading cylinder 4, so that when the hydraulic prop to be tested is clamped by the ejector block 5 and the loading cylinder 4, the ejector block 5 is attached to and extruded at the upper end of the hydraulic prop to be tested, and the loading cylinder 4 is attached to and extruded at the lower end of the hydraulic prop to be tested.

The loading cylinder 4 serves as loading equipment and can apply acting force to the lower end of the hydraulic prop to be tested. The loading cylinder 4 can specifically adopt a topping strut with the diameter of the oil cylinder being 200mm, and the working resistance of the topping strut can reach more than 4 times of that of a conventional hydraulic strut to be measured.

In this embodiment, the winch is mounted to the vertical frame; the winch lifting hook of the winch hangs downwards and can be used for hooking the top block 5 and the hydraulic prop to be tested. When an operator uses the winch lifting hook to hook the top block 5, the winch in the starting state can pull the winch lifting hook to vertically move, the winch and the winch lifting hook are used for pulling the top block 5 to move along the height direction of the vertical rack, and the installation position of the top block 5 on the vertical rack is changed. Because the vertical rack is provided with the plurality of ejector block 5 installation stations for fixing the ejector block 5 in the height direction, when the winch and the winch lifting hook thereof pull the ejector block 5 to move in the height direction of the vertical rack, the ejector block 5 can reach any ejector block 5 installation station under the action of the winch, and then is positioned and installed in any ejector block 5 installation station.

In conclusion, the hydraulic prop strength test frame provided by the application realizes the clamping and positioning of the hydraulic prop to be tested relative to the vertical rack by utilizing the ejector blocks 5 and the loading cylinder 4, and when the hydraulic prop to be tested is clamped, the winch can be adopted to pull the ejector blocks 5 to move among different ejector block 5 mounting stations of the vertical rack, so that the mounting of the ejector blocks 5 on any one ejector block 5 mounting station can be easily and quickly realized, and the clamping and positioning of the hydraulic props to be tested of different models can be further realized; the hydraulic prop strength test frame that this application provided utilizes loading cylinder 4 to exert pressure to the hydraulic prop that awaits measuring that the dress card is good, still utilizes the pressure testing machine to let in liquid to the hydraulic prop that awaits measuring that the dress card is good, can accomplish including letting the multiple strength test including the pressure test.

The hydraulic prop strength test stand provided by the present application is further described with reference to the accompanying drawings and embodiments.

In some embodiments, the hydraulic prop strength test stand provided by the present application uses the miner steel upright 11 as the column structure of the vertical stand.

For example, the vertical frame may include one or more vertically installed steel pillars 11 of the miner, all the installation stations of the top block 5 are distributed at intervals along the height direction of the steel pillars 11 of the miner, and the top block 5 is installed on the steel pillars 11 of the miner through the installation stations of the top block 5 and then installed on the vertical frame; the stranded cable section of thick bamboo of capstan winch also can install in miner's steel stand 11, and the stranded cable section of thick bamboo can be located miner's steel stand 11 along the middle part of direction of height, neither disturbs the dismouting of the hydraulic prop that awaits measuring in vertical frame, makes things convenient for operating personnel to control opening of capstan winch again. Because the steel upright posts 11 are vertically distributed, the height direction of the steel upright posts 11 is the length direction of the steel upright posts 11.

Typically, a vertical stand comprises two sets of miner steel uprights 11; any group of the steel upright columns 11 for the miner are vertically distributed, and a plurality of top plates 12 are arranged along the height direction of any group of the steel upright columns 11 for the miner; the two groups of the miner steel upright columns 11 are distributed in parallel at intervals, all top plates 12 of the two groups of the miner steel upright columns 11 are equal in height and distributed in opposite directions, and a pair of top plates 12 distributed in opposite directions at intervals form a top block 5 for mounting a workpiece. For example, four top plates 12 are arranged along the height direction of any group of the steel pillars 11 for miner, the four top plates 12 can be respectively regarded as a first top plate 12, a second top plate 12, a third top plate 12 and a fourth top plate 12 from top to bottom, the first top plate 12 of one group of the steel pillars 11 for miner is opposite to the first top plate 12 of the other group of the steel pillars 11 for miner at intervals to form a mounting station for the top block 5, and the top block 5 can be mounted at the upper end of the vertical frame through the mounting station for the top block 5. Wherein, in order to improve the structural strength of vertical frame and its miner's steel column 11, a set of miner's steel column 11 can include more than two miner's steel columns 11 that splice side by side.

Referring to fig. 1 and 2, the top block 5 used in the embodiments provided herein may include a top block fixing frame 51 and a pillar-mounted clamping head 52; two ends of the top block fixing frame 51 are respectively connected with a pair of top plates 12; the prop mounting head 52 is arranged on the top block fixing frame 51 and distributed downwards and is used for jointing and extruding the hydraulic prop to be tested. The both ends of aforementioned kicking block mount 51 can set up the retaining member, and when kicking block mount 51 removed between arbitrary a pair of roof 12, the both ends of 5 fixation clamps on kicking block utilized retaining member fixed connection a pair of roof 12 respectively, realized kicking block 5 and miner's steel stand 11's fixed connection, and at this moment, kicking block 5 is equivalent to the simple beam of the both ends are fixed of installing between two sets of miner's steel stand 11.

In order to accurately and reliably clamp any one of the hydraulic columns to be tested, the column clamp head 52 is vertically movable relative to the top block holder 51, thereby finely adjusting the distance between the column clamp head 52 and the loading cylinder 4.

On the basis of the above embodiment, in order to improve the operating characteristics of the hydraulic prop strength test frame, the top block fixing frame 51 of the top block 5 may be in sliding fit with any one group of the miner steel columns 11, in other words, both ends of the top block fixing frame 51 are respectively in sliding fit with two groups of the miner steel columns 11.

Based on kicking block mount 51 and two sets of miner's steel stand 11's sliding fit relation, when kicking block mount 51 removes under the effect of capstan winch between the 5 installation stations of different kicking blocks, miner's steel stand 11 can exert the guide effect, realizes that kicking block 5 shifts fast, accurately between the 5 installation stations of different kicking blocks.

In addition, this vertical frame of hydraulic prop strength test frame still includes a plurality of crosspieces 13 of locating between two sets of miner's steel stand 11, and all crosspieces 13 laminating are fixed in the trailing flank of two sets of miner's steel stand 11, and in other words, crosspiece 13 only shelters from in the trailing flank of two sets of miner's steel stand 11, and the leading flank of two sets of miner's steel stand 11 is not sheltered from by crosspiece 13. Aiming at the vertical rack with the structural characteristics, the hydraulic prop to be tested can be installed into the vertical rack from the front side surfaces of the two groups of the steel upright posts 11 for the miners by an operator, the structural strength of the vertical rack can be improved by using the crosspieces, the operation safety of the hydraulic prop to be tested in the vertical rack can be improved, and the hydraulic prop to be tested is prevented from being deviated and separated from the vertical rack accidentally.

In the above embodiments, the vertical rod of the miner steel can be made of carbon structural steel, the material of the vertical rod is Q275, the tensile strength is 490-610 Mpa, the yield strength is 275Mpa, and the allowable stress is 110-183 Mpa. The miner steel upright rod can adopt 12# miner steel, a plurality of size parameters including the length of the miner steel upright rod can be specifically set according to the models of a plurality of hydraulic struts to be tested, and the length of the miner steel upright rod can be 5-6 m, for example. Both the top block holder 51 and the pillar mount chuck 52 may employ Q235.

In order to improve the installation stability of the steel upright stanchion for the miner on the ground, the vertical frame comprises a base arranged at the bottom end of all the steel upright stanchions for the miner, the base can comprise a plurality of steel structural members and concrete poured on all the steel structural members, and can also comprise foundation bolts used for fixedly connecting the combined members of the steel structural members and the concrete to the ground.

As for the winch adopted by the hydraulic prop strength test frame, the winch can be specifically set to be a self-locking winch, namely the winch has self-locking property. When operating personnel utilized capstan winch tractive kicking block 5, the hydraulic prop that awaits measuring to remove, the auto-lock nature of capstan winch can prevent kicking block 5, the hydraulic prop that awaits measuring from falling fast and toppling over when operating personnel withdraws the power suddenly, improves the operation security of capstan winch, also is favorable to operating personnel to be in proper order progressively simultaneously with kicking block 5, the assigned position of the hydraulic prop tractive of awaiting measuring to vertical frame.

The pressure testing machine adopted by the hydraulic prop strength testing stand can be provided with a stop valve and a pressure gauge, for example, the output end of the pressure testing machine is provided with the stop valve and the pressure gauge, the stop valve can control the on-off state of the pressure testing machine and a prop cavity of a hydraulic prop to be tested, and the liquid supply state of the pressure testing machine to the hydraulic prop to be tested is controlled; the manometer is used for detecting the hydraulic pressure of the output of pressure testing machine, borrows this hydraulic pressure that reflects the hydraulic prop chamber of hydraulic prop that awaits measuring, and supplementary operating personnel accomplishes all kinds of experiments to the hydraulic prop that awaits measuring.

To sum up, adopt the hydraulic prop strength test frame of this application can wait to survey hydraulic prop and let multiple tests such as pressure test fast, safely to mining hydraulic prop after single dress card. The hydraulic prop strength test frame is easy to operate, can reduce the operation strength of operators, improves the operation safety, and meets the test requirements of hydraulic props to be tested in different models.

The hydraulic prop strength test stand provided by the application is described in detail above. The principles and embodiments of the present application are described herein using specific examples, which are only used to help understand the method and its core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims (8)

1. The hydraulic prop strength test stand is characterized by comprising a vertical stand, a winch arranged on the vertical stand and a pressure test machine communicated with a prop cavity of a hydraulic prop to be tested; the vertical rack is provided with a loading cylinder (4) and a top block (5) positioned above the loading cylinder (4); the loading cylinder (4) and the jacking block (5) are used for respectively clamping two ends of the hydraulic prop to be tested so as to clamp the hydraulic prop to be tested; the vertical rack is provided with a plurality of top block mounting stations used for fixing the top blocks (5) along the height direction; the winch is provided with a winch lifting hook which is hung downwards from the top of the vertical rack and used for hooking the top block (5) and the hydraulic prop to be tested.

2. The hydraulic prop strength test stand of claim 1, wherein the vertical frame includes a vertically mounted miner steel column (11); the cable drum of the winch is arranged in the middle of the steel upright (11) of the miner along the height direction.

3. The hydraulic prop strength test stand of claim 2, wherein the vertical frame includes two sets of the miner steel columns (11) spaced apart in parallel; any one group of the steel upright columns (11) for the miner is provided with a plurality of top plates (12) along the height direction, and all the top plates (12) of the two groups of the steel upright columns (11) for the miner are equal in height in pairs and distributed oppositely to form the top block installation station.

4. The hydraulic prop strength test stand according to claim 3, characterized in that the top block (5) comprises a top block fixing frame (51) and a prop clamping head (52) arranged on the top block fixing frame (51); the support mounting chucks (52) are distributed downwards; a locking piece is arranged between the top block fixing frame (51) and any one of the top plates (12).

5. The hydraulic prop strength test stand according to claim 4, characterized in that both ends of the top block fixing frame (51) are respectively in sliding fit with the two groups of the miner steel upright posts (11).

6. The hydraulic prop strength test stand according to claim 5, characterized in that a plurality of crosspieces (13) are arranged between two groups of the steel upright for miner (11), all the crosspieces (13) are attached and fixed on the rear side surfaces of the two groups of the steel upright for miner (11).

7. The hydraulic prop strength test stand of any one of claims 1 to 6, wherein the winch is in particular a self-locking winch.

8. The hydraulic prop strength test stand according to any one of claims 1 to 6, wherein an output end of the pressure test machine is provided with a stop valve and a pressure gauge.

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