阅读说明：本技术 一种利用宏观吸空稳定性高速配比全自动注浆设备 (Full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability ) 是由 王惠文 曹巍巍 施伟斌 段鹏鹏 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种利用宏观吸空稳定性高速配比全自动注浆设备,涉及注浆设备领域,尤其涉及一种浆液配比与注浆设备。可以实现高速、全自动的稳定配浆、稳定注浆。所述注浆设备包括油缸、活塞杆、连接板、大缸活塞杆、大缸以及小缸活塞杆、小缸；通过油缸中的活塞带动活塞杆往复运动,通过大缸活塞杆带动大缸中的活塞往复运动,通过小缸活塞杆带动小缸中的活塞往复运动；所述大缸的一侧开设有接入注浆回路一中的浆料吸口一,所述小缸的一侧开设有接入注浆回路二中的浆料吸口二。从整体上具有结构精巧、设备成本低、动作效率高、稳定性高等一系列优点,通过大缸和小缸的设计,使得本案对于配比控制效果好、控制方式简单。(The invention discloses full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability, relates to the field of grouting equipment, and particularly relates to slurry proportioning and grouting equipment. Can realize high-speed, full-automatic stable slurry preparation and stable grouting. The grouting equipment comprises an oil cylinder, a piston rod, a connecting plate, a large cylinder piston rod, a large cylinder, a small cylinder piston rod and a small cylinder; the piston rod is driven to reciprocate by the piston in the oil cylinder, the piston in the large cylinder is driven to reciprocate by the piston rod of the large cylinder, and the piston in the small cylinder is driven to reciprocate by the piston rod of the small cylinder; and a first slurry suction port connected into the first grouting loop is formed in one side of the large cylinder, and a second slurry suction port connected into the second grouting loop is formed in one side of the small cylinder. Have a series of advantages such as structure exquisiteness, equipment cost are low, action efficiency is high, stability height on the whole, through the design of big jar and little jar for the present case is effectual, the control mode is simple to the ratio control.)

1. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability is characterized by comprising an oil cylinder (9), a piston rod (8), a connecting plate (10), a large cylinder piston rod (11), a large cylinder (12), a small cylinder piston rod (17) and a small cylinder (18); the piston in the oil cylinder (9) drives a piston rod (8) to reciprocate, the connecting plate (10) is fixedly connected to one end of the piston rod (8), the large cylinder piston rod (11) and the small cylinder piston rod (17) are fixedly connected to the same side end face of the connecting plate (10), the large cylinder piston rod (11) drives the piston in the large cylinder (12) to reciprocate, and the small cylinder piston rod (17) drives the piston in the small cylinder (18) to reciprocate;

one side of the large cylinder (12) is provided with a first slurry suction port (F4) connected into the first grouting loop, and one side of the small cylinder (18) is provided with a second slurry suction port (E4) connected into the second grouting loop.

2. The full-automatic grouting equipment utilizing macroscopic air suction stability and high-speed proportioning according to claim 1 is characterized in that an oil cylinder (9) is connected into an oil tank (1) after passing through a reversing valve (5) and a hydraulic pump (3), the reversing valve (5) is provided with a control rod, a U-shaped structural member (6) is fixedly connected onto the control rod, a switch plate (7) used for triggering the U-shaped structural member (6) is fixedly connected onto a piston rod (8), the switch plate (7) is located at a U-shaped opening of the U-shaped structural member (6), and the reciprocating motion of the switch plate (7) drives the U-shaped structural member (6)) and the control rod of the reversing valve (5) to reciprocate so as to realize automatic reversing.

3. The full-automatic grouting equipment for realizing high-speed proportioning by utilizing macroscopic suction stability is characterized in that a first slurry loop comprises a viscous slurry storage tank (15), a first feeding check valve (16) and a first discharging check valve (13) which are sequentially connected in series in a pipeline, and a first slurry suction port (F4) is connected between the first feeding check valve (16) and the first discharging check valve (13);

the slurry loop II comprises a water slurry liquid storage tank (19), a feeding one-way valve II (20) and a discharging one-way valve II (19) which are sequentially connected in series, and a slurry suction port II (E4) is connected between the feeding one-way valve II (20) and the discharging one-way valve II (19);

and the pipeline of the first slurry loop is butted with the pipeline of the second slurry loop, and a mixed slurry outlet (K) is formed in the pipeline between the first discharging one-way valve (13) and the second discharging one-way valve (19).

4. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability is characterized in that the oil cylinder (9), the large cylinder (12) and the small cylinder (18) are parallel to each other, two ends of the piston rod (8) extend out of the oil cylinder (9), and the piston rod (8) is fixedly connected with a piston in the oil cylinder (9); one end of the large cylinder piston rod (11) extends out of the large cylinder (12), and the other end of the large cylinder piston rod is fixedly connected with the piston in the large cylinder (12); one end of the small cylinder piston rod (17) extends out of the small cylinder (18), and the other end of the small cylinder piston rod is fixedly connected with a piston in the small cylinder (18);

the end face of one side of the connecting plate (10) is fixedly connected with a piston rod (8), and the end face of the other side of the connecting plate is fixedly connected with the large cylinder piston rod (11) and the small cylinder piston rod (17) at the same time.

5. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability is characterized in that the reversing valve (5) is provided with an oil inlet (P2), an oil outlet (T1), a first upper oil port (A1) and a second upper oil port (B1), and the oil cylinder (9) is provided with a first lower oil port (A2) and a second lower oil port (B2);

the oil inlet (P2) is connected with the outlet of the hydraulic pump (3), an overflow pipeline is connected between the hydraulic pump (3) and the reversing valve (5), and an overflow valve (4) is arranged in the overflow pipeline; the oil outlet (T1) is directly connected to the oil tank (1), the upper oil port I (A1) is connected with the lower oil port I (A2), and the upper oil port II (B1) is connected with the lower oil port II (B2).

6. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability is characterized in that the reversing valve (5) is a two-position reversing valve;

when the oil inlet is located at the first working position, the oil inlet (P2) is connected with the first upper oil port (A1), and the second upper oil port (B1) is connected with the oil outlet (T1);

when the oil inlet is at the second working position, the oil inlet (P2) is connected with the second upper oil port (B1), and the first upper oil port (A1) is connected with the oil outlet (T1).

7. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability is characterized in that an anti-impact mechanism parallel to a piston rod (8) is further connected onto the control rod, the anti-impact mechanism comprises a rotary table (501), a sliding rod (502), a pair of buffering cylinders (503) and a communicating oil pipe (504) fixedly connected between the pair of buffering cylinders (503), the sliding rod (502) is parallel to the piston rod (8) and arranged on one side of the control rod, the rotary table (501) is hinged with the sliding rod (502), and the rotary table (501) is sleeved with the control rod;

the pair of buffer cylinders (503) are fixedly arranged on one side of the control rod, buffer cavities are formed in the buffer cylinders (503), and two ends of the sliding rod (502) respectively extend into the two buffer cavities, so that the sliding rod (502) can do linear reciprocating motion between the two buffer cylinders along with the reciprocating swing of the control rod;

the oil passages (507) communicated with the buffer cavities (506) are further formed in the buffer cylinders (503), the oil passages (507) in the two buffer cylinders (503) are communicated through the communication oil pipe (504), and the two buffer cavities (506) and the communication oil pipe (504) are filled with buffer oil.

8. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability according to claim 7, wherein a throttle valve is arranged in the communicating oil pipe (504).

9. The full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability according to claim 2, wherein the control rods are connected with a U-shaped structural member (6) through levers (508), a base (509) is fixedly arranged between the control rods of the U-shaped structural member (6), the upper part of the lever (508) is hinged with the base (509), the top end of the lever (508) is fixedly connected with the U-shaped structural member (6), a sliding sleeve (510) is sleeved at the bottom of the lever (508), and the top end of the control rod is hinged with the sliding sleeve (510).

Technical Field

The invention relates to the field of grouting equipment, in particular to slurry proportioning and grouting equipment.

Background

At present, the conventional grouting equipment generally has a series of problems of unstable slurry proportioning, short slurry reaction time, easy blockage, low efficiency, complex equipment and the like. In view of the above, a grouting apparatus disclosed in the prior art, entitled "grouting device for grouting reinforcement of ground drilling to coal seam broken roof", published in 2019, 5, month and 31, and the chinese utility model patent application No. "201821517436.8" is proposed, in which two metering pumps of the same type are provided in a slurry mixing device, so that when slurry is sucked, the flow rate of the slurry is controlled by means of the metering pumps. However, when the slurry mixing device is actually used, the two metering pumps do not inject slurry into the mixing device in equal proportion, the slurry injection in large proportion needs to be waited after the slurry injection in small proportion is completed, and the start and stop time of the two metering pumps slightly deviates to influence the proportioning of the slurry. Therefore, the method also has the defects of high precision requirement of the metering pump, high equipment cost, high control difficulty and the like.

Disclosure of Invention

Aiming at the problems, the invention provides full-automatic grouting equipment for high-speed proportioning by utilizing macroscopic air suction stability, which has the advantages of exquisite structure, low equipment cost, good proportioning control effect, high action efficiency and high stability, and can realize high-speed and full-automatic stable proportioning and stable grouting.

The technical scheme of the invention is as follows: the grouting equipment comprises an oil cylinder 9, a piston rod 8, a connecting plate 10, a large cylinder piston rod 11, a large cylinder 12, a small cylinder piston rod 17 and a small cylinder 18; the piston rod 8 is driven to reciprocate by a piston in the oil cylinder 9, the connecting plate 10 is fixedly connected to one end of the piston rod 8, the large cylinder piston rod 11 and the small cylinder piston rod 17 are fixedly connected to the same side end face of the connecting plate 10, the piston in the large cylinder 12 is driven to reciprocate by the large cylinder piston rod 11, and the piston in the small cylinder 18 is driven to reciprocate by the small cylinder piston rod 17;

one side of the large cylinder 12 is provided with a first slurry suction port F4 connected into the first grouting loop, and one side of the small cylinder 18 is provided with a second slurry suction port E4 connected into the second grouting loop.

The hydro-cylinder 9 inserts oil tank 1 behind switching-over valve 5 and hydraulic pump 3, switching-over valve 5 has the control lever, fixedly connected with U type structure 6 on the control lever, fixedly connected with is used for triggering switch plate 7 of U type structure 6 on the piston rod 8, switch plate 7 is in the U font opening part of U type structure 6, and reciprocating motion through switch plate 7 drives the control lever reciprocating motion of U type structure 6 and switching-over valve 5, realizes the automatic switch-over.

The first slurry loop comprises a viscous slurry liquid storage tank 15, a first feeding one-way valve 16 and a first discharging one-way valve 13 which are sequentially connected in series in a pipeline, and a first slurry suction port F4 is connected between the first feeding one-way valve 16 and the first discharging one-way valve 13;

the slurry loop II comprises a water slurry liquid storage tank 19, a feeding one-way valve II 20 and a discharging one-way valve II 19 which are sequentially connected in series in a pipeline, and the slurry suction port II E4 is connected between the feeding one-way valve II 20 and the discharging one-way valve II 19;

and the pipeline of the first slurry loop is in butt joint with the pipeline of the second slurry loop, and a mixed slurry outlet K is formed in the pipeline between the first discharge one-way valve 13 and the second discharge one-way valve 19.

The oil cylinder 9, the large cylinder 12 and the small cylinder 18 are parallel to each other, two ends of the piston rod 8 extend out of the oil cylinder 9, and the piston rod 8 is fixedly connected with a piston in the oil cylinder 9; one end of the large cylinder piston rod 11 extends out of the large cylinder 12, and the other end of the large cylinder piston rod is fixedly connected with a piston in the large cylinder 12; one end of the small cylinder piston rod 17 extends out of the small cylinder 18, and the other end of the small cylinder piston rod is fixedly connected with a piston in the small cylinder 18;

the end face of one side of the connecting plate 10 is fixedly connected with the piston rod 8, and the end face of the other side is fixedly connected with the large cylinder piston rod 11 and the small cylinder piston rod 17.

The reversing valve 5 is provided with an oil inlet P2, an oil outlet T1, a first upper oil port A1 and a second upper oil port B1, and the oil cylinder 9 is provided with a first lower oil port A2 and a second lower oil port B2;

the oil inlet P2 is connected with the outlet of the hydraulic pump 3, an overflow pipeline is connected between the hydraulic pump 3 and the reversing valve 5, and an overflow valve 4 is arranged in the overflow pipeline; the oil outlet T1 is directly connected to the oil tank 1, the first upper oil port A1 is connected with the first lower oil port A2, and the second upper oil port B1 is connected with the second lower oil port B2.

The reversing valve 5 is a two-position reversing valve;

when the oil inlet P2 is located at the first working position, the first upper oil port A1 is connected, and the second upper oil port B1 is connected with the oil outlet T1;

when the oil inlet P2 is at the second working position, the second upper oil port B1 is connected, and the first upper oil port A1 is connected with the oil outlet T1.

In order to avoid the switch board from impacting the control rod, an anti-impact mechanism parallel to the piston rod 8 is further connected to the control rod, the anti-impact mechanism comprises a rotary disc 501, a sliding rod 502, a pair of buffer cylinders 503 and a communication oil pipe 504 fixedly connected between the pair of buffer cylinders 503, the sliding rod 502 is parallel to the piston rod 8 and is arranged on one side of the control rod, the rotary disc 501 is hinged to the sliding rod 502, and the rotary disc 501 is sleeved with the control rod;

the pair of buffer cylinders 503 are fixedly arranged at one side of the control rod, buffer cavities are formed in the buffer cylinders 503, and two ends of the sliding rod 502 respectively extend into the two buffer cavities, so that the sliding rod 502 can do linear reciprocating motion between the two buffer cylinders along with the reciprocating swing of the control rod;

the buffering cylinders 503 are further provided with oil passages 507 communicated with the buffering cavities 506, the oil passages 507 in the two buffering cylinders 503 are communicated through a communication oil pipe 504, and the two buffering cavities 506 and the communication oil pipe 504 are filled with buffering oil.

Further, a throttle valve is disposed in the communication oil pipe 504.

In order to improve the impact effect, the control rod is connected with the U-shaped structural member 6 through a lever 508, a base 509 is fixedly arranged between the control rods of the U-shaped structural member 6, the upper portion of the lever 508 is hinged to the base 509, the top end of the lever 508 is fixedly connected with the U-shaped structural member 6, a sliding sleeve 510 is sleeved at the bottom of the lever 508, and the top end of the control rod is hinged to the sliding sleeve 510.

The invention can synchronously suck or send out two different slurry materials in two grouting loops through the large cylinder piston rod and the small cylinder piston rod which move synchronously, has a series of advantages of exquisite structure, low equipment cost, high action efficiency, high stability and the like on the whole, has good proportioning control effect and simple control mode through the design of the large cylinder and the small cylinder, and can realize high-speed and full-automatic stable slurry distribution and stable grouting.

Drawings

FIG. 1 is a schematic structural diagram of the present application,

FIG. 2 is a graph of operating frequency versus flow for a large cylinder piston rod and a small cylinder piston rod;

figure 3 is a schematic view showing the operating state of the directional valve lever,

figure 4 is a schematic view of the operating condition of the reversing valve lever,

figure 5 is a schematic illustration three of the operating condition of the reversing valve lever,

figure 6 is a fourth schematic view of the operating condition of the reversing valve lever,

figure 7 is a schematic diagram of an optimized embodiment of the present invention,

figure 8 is a top view of the impact resistance mechanism,

figure 9 is a cross-sectional view taken along line I-I of figure 8,

FIG. 10 is a schematic diagram of a further optimized embodiment of the present disclosure;

in the figure, 1 is an oil tank, 2 is a motor, 3 is a hydraulic pump, 4 is an overflow valve, 5 is a reversing valve, 6 is a U-shaped structural member, 7 is a switch plate, 8 is a piston rod, 9 is an oil cylinder, 10 is a connecting plate, 11 is a large cylinder piston rod, 12 is a large cylinder, 13 is a one-way valve, 14 is a pipeline, 15 is a viscous slurry liquid storage tank, 16 is a one-way valve, 17 is a small cylinder piston rod, 18 is a small cylinder, 19 is a one-way valve, 20 is a one-way valve, and 21 is an aqueous slurry liquid storage tank;

501 is a rotary plate, 502 is a sliding rod, 503 is a buffer cylinder, 504 is a communicating oil pipe, 505 is a fixed support rod, 506 is a buffer cavity, 507 is an oil channel, 508 is a lever, 509 is a base, and 510 is a sliding sleeve.

Detailed Description

In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.

As shown in figures 1-2, the grouting equipment comprises an oil cylinder 9, a piston rod 8, a connecting plate 10, a large cylinder piston rod 11, a large cylinder 12, a small cylinder piston rod 17 and a small cylinder 18; the piston rod 8 is driven to reciprocate by a piston in the oil cylinder 9, the connecting plate 10 is fixedly connected to one end of the piston rod 8, the large cylinder piston rod 11 and the small cylinder piston rod 17 are fixedly connected to the same side end face of the connecting plate 10, the piston in the large cylinder 12 is driven to reciprocate by the large cylinder piston rod 11, and the piston in the small cylinder 18 is driven to reciprocate by the small cylinder piston rod 17; therefore, in the process that the piston in the oil cylinder 9 drives the piston rod 8 to reciprocate, the pistons in the large cylinder 12 and the small cylinder 18 can also be synchronously driven to reciprocate by the large cylinder piston rod 11 and the small cylinder piston rod 17;

one side of the large cylinder 12 is provided with a first slurry suction port F4 connected into the first grouting loop, and one side of the small cylinder 18 is provided with a second slurry suction port E4 connected into the second grouting loop. Like this, through synchronous motion's big cylinder piston rod 11, little cylinder piston rod 17, can be in two slip casting return circuits, synchronous absorption or two kinds of different thick liquids of seeing off have structure exquisiteness, equipment cost low, a series of advantages such as action efficiency height, stability height on the whole, through the design of big cylinder and little cylinder for the present case is effectual, the control mode is simple to the ratio control, can realize high-speed, full-automatic stable joining in marriage thick liquid, stable slip casting.

The hydro-cylinder 9 inserts oil tank 1 behind switching-over valve 5 and hydraulic pump 3, switching-over valve 5 has the control lever, fixedly connected with U type structure 6 on the control lever, fixedly connected with is used for triggering switch plate 7 of U type structure 6 on the piston rod 8, switch plate 7 is in the U font opening part of U type structure 6, and reciprocating motion through switch plate 7 drives the control lever reciprocating motion of U type structure 6 and switching-over valve 5, realizes the automatic switch-over. When the automatic control device is used, the motor 2 connected to the hydraulic pump 3 can drive the hydraulic pump to work, so that oil and pressure are injected into the oil cylinder through the reversing valve, the piston rod 8 is driven to move towards a certain side, when the piston rod 8 moves towards one side in a linear mode, the switch plate 7 is driven to move synchronously, the control rod of the reversing valve 5 is operated by shifting the U-shaped structural part 6, and the reversing valve is controlled automatically finally; therefore, after the hydraulic pump is started, the piston in the oil cylinder 9 can realize the purpose of convenient and efficient automatic reversing.

The first slurry loop comprises a viscous slurry liquid storage tank 15, a first feeding one-way valve 16 and a first discharging one-way valve 13 which are sequentially connected in series in a pipeline, and a first slurry suction port F4 is connected between the first feeding one-way valve 16 and the first discharging one-way valve 13;

the slurry loop II comprises a water slurry liquid storage tank 19, a feeding one-way valve II 20 and a discharging one-way valve II 19 which are sequentially connected in series in a pipeline, and the slurry suction port II E4 is connected between the feeding one-way valve II 20 and the discharging one-way valve II 19;

and the pipeline of the first slurry loop is in butt joint with the pipeline of the second slurry loop, and a mixed slurry outlet K is formed in the pipeline between the first discharge one-way valve 13 and the second discharge one-way valve 19. The specific using process is as follows:

when the piston rod 8 reciprocates, the connecting plate 10 arranged at the end of the piston rod 8 also reciprocates along with the reciprocating motion, the large cylinder piston rod 11 and the small cylinder piston rod 17 arranged at the upper side and the lower side of the connecting plate 10 also reciprocate left and right, when the large cylinder piston rod 11 moves leftwards, negative pressure suction is generated in the cavity at the right side of the large cylinder 12, the first discharging one-way valve 13 acts and is closed, the first feeding one-way valve 16 is opened, viscous liquid in the viscous liquid storage tank 15 reaches the cavity at the left side of the cylinder barrel through the opened single valves F2 and F3 from the opening F1, when the large cylinder piston rod 11 moves rightwards, the first feeding one-way valve 16 is closed, the first discharging one-way valve 13 is opened, and the viscous liquid in the cylinder barrel at the right side of the large cylinder 12 reaches the position K through the openings F5 and F6 of the first discharging one-way valve 13.

Similarly, the aqueous slurry liquid storage tank 19 firstly enters the right cavity of the small cylinder through the ports E2, E3 and E4 and then reaches the position K through the ports E4, E5 and E6, so that the small cylinder can suck and discharge the aqueous fluid;

the large cylinder piston rod 11 and the small rod piston rod 17 are simultaneously mounted on the connecting plate 10, so that the two are synchronously moved.

The mixture ratio at K is the ratio of single discharge of the large cylinder 12 to single discharge of the small cylinder 18.

The oil cylinder 9, the large cylinder 12 and the small cylinder 18 are parallel to each other, two ends of the piston rod 8 extend out of the oil cylinder 9, and the piston rod 8 is fixedly connected with a piston in the oil cylinder 9; one end of the large cylinder piston rod 11 extends out of the large cylinder 12, and the other end of the large cylinder piston rod is fixedly connected with a piston in the large cylinder 12; one end of the small cylinder piston rod 17 extends out of the small cylinder 18, and the other end of the small cylinder piston rod is fixedly connected with a piston in the small cylinder 18;

the end face of one side of the connecting plate 10 is fixedly connected with the piston rod 8, and the end face of the other side is fixedly connected with the large cylinder piston rod 11 and the small cylinder piston rod 17.

The reversing valve 5 is provided with an oil inlet P2, an oil outlet T1, a first upper oil port A1 and a second upper oil port B1, and the oil cylinder 9 is provided with a first lower oil port A2 and a second lower oil port B2;

the oil inlet P2 is connected with the outlet of the hydraulic pump 3, an overflow pipeline is connected between the hydraulic pump 3 and the reversing valve 5, and an overflow valve 4 is arranged in the overflow pipeline; the oil outlet T1 is directly connected to the oil tank 1, the first upper oil port A1 is connected with the first lower oil port A2, and the second upper oil port B1 is connected with the second lower oil port B2.

The reversing valve 5 is a two-position reversing valve;

when the oil inlet P2 is located at the first working position, the first upper oil port A1 is connected, and the second upper oil port B1 is connected with the oil outlet T1;

when the oil inlet P2 is at the second working position, the second upper oil port B1 is connected, and the first upper oil port A1 is connected with the oil outlet T1.

The specific using process is as follows:

the motor 2 drives the hydraulic pump 3 to work, and the hydraulic pump 3 sucks hydraulic oil from the oil tank 1 and discharges the hydraulic oil from a P1 oil port; the overflow valve 4 mainly acts to limit the highest pressure of the system; the pressure oil reaches an oil port of a reversing valve P2, a P2 oil port is communicated with an A1 oil port, the pressure oil reaches an A1 from a P2 and reaches an A2 oil port of the oil cylinder 9, hydraulic oil is injected into a left cavity of the oil cylinder, a piston rod moves right, the hydraulic oil in a right cavity of the oil cylinder 9 flows to a B1 oil port of the reversing valve 5 from a B2 oil port, and the hydraulic oil flows into the oil tank 1 from a B1 to a T1 oil port because the B1 oil port is communicated with a T1 oil port at the moment. When the piston rod moves rightwards, the switch plate 7 at the end of the piston rod also moves rightwards, when the piston rod moves to a certain degree, the U-shaped structural member 6 is pulled to rotate rightwards, the U-shaped structural member 6 is installed on a handle of the reversing valve 5, the reversing valve moves leftwards, and in the original reversing valve 5, the connection between P2 and A1 is changed into the connection between P2 and B1; the hydraulic oil reaches the right cavity of the oil cylinder 9 from the P2 to the B1, the piston rod 8 moves leftwards, the hydraulic oil at the A2 oil port of the oil cylinder 9 reaches the A1 oil port of the reversing valve 5, the A1 oil port is communicated with the T1 because the reversing valve is in the left moving state, and the hydraulic oil reaches the hydraulic oil tank 1 from the T1 oil port. At the moment, the piston rod 8 moves leftwards, but moves to a certain degree, the switch board 7 marked at the end of the piston rod 8 drives the U-shaped structural part 6 to move leftwards, and the reversing valve 5 returns to the initial state. Thus completing the reciprocating motion of the piston rod.

The speed control of the reciprocating motion can be controlled by adjusting the rotating speed of the motor 2;

the speed control of the reciprocating motion can be controlled by adjusting the displacement of the hydraulic pump 3;

the speed control of the reciprocating motion can be controlled by adjusting the pressure of the relief valve 4.

In addition, in consideration of the problem of air suction of the large cylinder and the small cylinder under the condition of high-speed motion, the scheme is put into practical use, and the practical working frequency and flow rate relation graph of the large cylinder piston rod and the small cylinder piston rod is drawn. As shown in fig. 2, wherein the J curve is the relationship between the reciprocating working frequency of the piston rod of the large cylinder and the flow rate; the i curve is the relation between the reciprocating working frequency and the flow of the small cylinder piston rod;

repeated experiments show that on one hand, the speed of the j curve is constant from V1 to V3, the flow rate is also constant, and when the speed is less than V1, the full displacement of the piston cylinder works; when the speed is higher than V1, the large cylinder piston works in a partially suction state, the displacement is reduced and the speed is increased greatly in a single work; when the speed is fixed at a certain value from V1 to V3, the flow rate is stabilized. On the other hand, the small cylinders operate at full displacement when the speed is less than the V2 speed, and operate in a partially aspirated state when the speed is greater than the V2 speed.

Because this system uses the material of two kinds of special gradations, viscous fluid material and aqueous fluid material, according to actual construction requirement under, the material gradation also needs to follow the change, like this, only need adjust to under suitable speed V, just can realize accurate ratio.

In other words, when the piston rod 8 moves at a high speed, although there is a problem of air suction, when the piston rod is kept at the speed V, the ratio of the two materials can be kept at a certain ratio. However, in the meantime, through practical tests, if the piston rod 8 keeps moving at a high speed, another technical problem is brought along, namely, the switch plate frequently acts to impact the U-shaped structural member, so that the control rod of the reversing valve is impacted, and great influence is brought to the service life and the service stability of the reversing valve. In view of the above, the present application also provides the following optimized embodiments for the piston rod moving at high speed.

The control rod is further connected with an anti-impact mechanism parallel to the piston rod 8, the anti-impact mechanism comprises a rotary disc 501, a sliding rod 502, a pair of buffer cylinders 503, an oil communication pipe 504 and a fixed support rod 505, the oil communication pipe 504 and the fixed support rod are fixedly connected between the pair of buffer cylinders 503, the sliding rod 502 is parallel to the piston rod 8 and is arranged on one side of the control rod, the rotary disc 501 is hinged to the sliding rod 502, and the rotary disc 501 is sleeved with the control rod;

the pair of buffer cylinders 503 are fixedly arranged at one side of the control rod, and are fixedly connected with each other through a fixed support rod 505, a buffer cavity is arranged in each buffer cylinder 503, and two ends of the sliding rod 502 respectively extend into the two buffer cavities, so that the sliding rod 502 can do linear reciprocating motion between the two buffer cylinders along with the reciprocating swing of the control rod;

the buffering cylinders 503 are further provided with oil passages 507 communicated with the buffering cavities 506, the oil passages 507 in the two buffering cylinders 503 are communicated through a communication oil pipe 504, and the two buffering cavities 506 and the communication oil pipe 504 are filled with buffering oil. Thus, first, the slide rod 502 can be allowed to make a linear reciprocating motion without jamming or interference; then, when the sliding rod 502 does a linear reciprocating motion between the two buffer cylinders along with the reciprocating swing of the control rod, the buffer oil in the two buffer cavities is forced to flow back and forth through the communicating oil pipe 504, so that the impact force of the switch plate on the U-shaped structural member and the control rod is continuously consumed along with the flow of the buffer oil. Therefore, on one hand, the impact of the switch plate on the U-shaped structural member and the control rod can be obviously avoided, and the premature damage of the reversing valve can be avoided; on the other hand, when the control rod stays under a certain state, the shock-resistant assembly cannot generate extra acting force on the control rod, so that accidental action of the reversing valve is avoided, and stable operation of equipment is guaranteed.

Further, a throttle valve is disposed in the communication oil pipe 504. Thereby better providing a buffering effect when two buffer oils pass.

In addition, in order to reduce the impact force better, the present application also proposes the following further optimized embodiments. The control rod can be fixedly connected with the U-shaped structural member and can also be connected with the U-shaped structural member through a lever.

Specifically, the method comprises the following steps: the control rod is connected with the U-shaped structural part 6 through a lever 508, a base 509 is fixedly arranged between the control rods of the U-shaped structural part 6, the upper portion of the lever 508 is hinged to the base 509, the top end of the lever 508 is fixedly connected with the U-shaped structural part 6, a sliding sleeve 510 is sleeved at the bottom of the lever 508, and the top end of the control rod is hinged to the sliding sleeve 510. Wherein, the center of the base, the middle point of the impact resistance mechanism and the bottom end of the control rod are positioned on the same plumb line. Thus, on the one hand, since there is also a lever between the control rod and the U-shaped structural part, and the fulcrum of the lever is located at the upper part of the lever, a torque reducing mechanism will be formed by means of the lever, thereby further reducing the force acting on the control rod upon impact. On the other hand, because the sliding sleeve cup joints the lever to it is articulated with the control lever, consequently, order about the reciprocal swing in-process of control lever, the output arm of force of lever will shorten earlier afterwards to lengthen to make the moment of force that acts on the control lever reduce again by little grow, thereby when further reducing the impact to the control lever again, also can guarantee the operation that the control lever can be smooth to the target position on, thereby guarantee the reliability of equipment operation.

While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.