Die lifter with adjustable hydraulic length

Abstract

The hydraulic length-adjustable mold lifter comprises an equipment table and a bottom plate fixed on the equipment table through bolts, and is characterized in that a mold lifter body is mounted at the top of the bottom plate in an up-down sliding manner; containing cavities are formed in the inner side of the top of the mold lifter body at equal intervals, large balls are rotationally installed on the inner sides of the containing cavities, a first oil way channel is formed in the bottom side of the interior of the mold lifter body, and a second oil way channel is formed in the top side of the interior of the mold lifter body; a limiting frame is mounted in the mold lifter body in an up-down sliding manner; piston rods are arranged on the left side and the right side of the interior of the mold lifter body correspondingly, and the bottoms of the piston rods extend to the outer side of the mold lifter body. According to the hydraulic length-adjustable mold lifter, the adjusting block is controlled by the motor to move left and right, so that the distance between the bottom of the bottom block and the upper surface of the adjusting block is changed, and when the piston rod completely extends out, the mold lifter body is lifted to different heights.

Description

Technical Field

[0001] The invention relates to the technical field of die lifters, in particular to a die lifter with adjustable hydraulic length. Background Art

[0002] The formwork lifter is a mechanical device specially used for pouring settlement columns or other high-rise formwork that needs to be loaded and unloaded. Its main function is to lift the formwork to a certain height to facilitate the construction workers' work. The biggest feature of the formwork lifter is that it can quickly assemble and disassemble the formwork, greatly improving the construction efficiency while also ensuring the construction quality.

[0003] As a means to solve the above technical problems, for example, Patent Document 1 discloses "an adjustable die lifter, comprising a long strip die lifter body, a plurality of mounting grooves are arranged in the die lifter body, shaft holes are arranged on both sides of the mounting grooves, a fixed shaft is arranged in the shaft hole, a bearing is arranged on the fixed shaft, and the bearing is located in the mounting groove; both ends of the die lifter body are respectively provided with oil cylinder receiving grooves with downward openings, and the bottom of the oil cylinder receiving groove is provided with a set screw to lift the mold placed on the die lifter body to facilitate the movement of the mold; at the same time, one or more adjustable die lifters can be arranged according to the size of the machine, and it is not necessary to customize it separately according to the size of the machine, which is convenient to use.

[0004] However, in this technology, the mold lifter body is not convenient for adjusting the mold lifting height. The mold lifter fixes the mold lifting height, which is not convenient for adjusting the lifting height according to the needs of different molds, and it is not convenient to lock and fix the bearings in the mold lifter. When the mold moves to the specified position, the mold lifter descends and easily causes the mold to shake, causing the mold placement position to shift.

[0005] Patent Document 1:

[0006] Chinese utility model patent with publication number CN205165597U. Summary of the invention

[0007] The purpose of the present invention is to provide a hydraulically length-adjustable die lifter to solve the problem that the currently commonly used die lifter proposed in the above background technology is not convenient for adjusting the die lifting height. The die lifter fixes the die lifting height, which is not convenient for adjusting the lifting height according to the needs of different molds, and it is not convenient to lock and fix the bearings in the die lifter. When the mold moves to the specified position, the die lifter descends, which easily causes the mold to shake, causing the mold placement position to shift.

[0008] To achieve the above object, the present invention provides the following technical solution: a hydraulically length-adjustable die lifter, comprising an equipment platform, and a bottom plate fixed to the equipment platform by bolts, characterized in that a die lifter body is slidably mounted on the top of the bottom plate;

[0009] The top inner side of the die lifter body is provided with accommodating cavities at equal intervals, a large ball is rotatably mounted inside the accommodating cavities, a first oil passage is provided on the inner bottom side of the die lifter body, and a second oil passage is provided on the inner top side of the die lifter body;

[0010] A limit frame is installed inside the mold lifter body for sliding up and down operation;

[0011] The left and right sides of the mold lifter body are both provided with piston rods, and the bottom of the piston rods extends to the outside of the mold lifter body, the bottom of the piston rods is fixedly connected with a bottom block, and the bottom of the mold lifter body is provided with a distance meter;

[0012] Adjustment blocks are slidably mounted on both left and right sides of the bottom plate, and the cross section of the adjustment block is an inclined structure, and the inclination directions of the left and right monomers of the adjustment block are opposite.

[0013] Preferably, the bottom of the die lifter body extends to the inside of the bottom plate, and a first spring for resetting the die lifter body downward is provided inside the bottom plate.

[0014] Preferably, a plurality of small balls are arranged at the bottom of the accommodating cavity, and the small balls rotate inside the mold lifter body;

[0015] The outer surface of the small ball is tightly fitted with the outer surface of the large ball.

[0016] Preferably, a connecting pipe is installed on the left side of the mold lifter body, and the first oil channel and the second oil channel are connected through the connecting pipe.

[0017] Preferably, an electromagnetic hydraulic valve is provided on the outer side of the connecting pipe.

[0018] Preferably, an oil inlet is provided on the left side of the mold lifter body, and the oil inlet is interconnected with the first oil passage.

[0019] Preferably, a second spring for resetting the limit frame upward is provided inside the mold lifter body, and the limit frame is located outside the large ball.

[0020] Preferably, the cross section of the bottom block is an inclined structure, and the bottom block is located directly above the adjusting block.

[0021] Preferably, a motor is installed on the left side inside the base plate, and the output end of the motor is connected to a shaft via a coupling.

[0022] Preferably, the outer surface of the shaft is a bidirectional threaded structure, and the shaft is connected to the adjustment block by a threaded connection;

[0023] Wherein, the movement directions of the left and right monomers of the regulating block are opposite.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. The oil inlet of the second oil channel is controlled by the electromagnetic hydraulic valve, and then the limit frame is controlled to move up and down. By controlling the limit frame to move downward, the limit frame squeezes and locks the large ball, so that the large ball is fixed inside the die lifter body, so that the top mold can be stably lowered when the die lifter body adjusts its height;

[0026] 2. The motor controls the adjustment block to move left and right, so that the distance between the bottom of the bottom block and the upper surface of the adjustment block changes, so that when the piston rod is fully extended, the die lifter body is lifted to different heights;

[0027] 3. The height position change of the inclined surface of the adjusting block is measured by the distance meter, and then the left and right movement distance of the adjusting block is controlled by the motor. The mold lifter body is lifted to different heights by moving the adjusting block left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the connection between the bottom plate and the mold lifter body of the present invention;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the equipment platform and the bottom plate connected to the present invention;

[0030] Figure 3 It is a front cutaway structural diagram of the connection between the bottom plate and the mold lifter body of the present invention;

[0031] Figure 4 It is a schematic diagram of the top view of the cross-section structure of the connection between the die lifter body and the large ball of the present invention;

[0032] Figure 5 It is a schematic diagram of the side section structure of the connection between the accommodation cavity and the large ball of the present invention;

[0033] Figure 6 It is a schematic diagram of a top view of a cross-sectional structure of the connection between the shaft rod and the adjustment block of the present invention;

[0034] Figure 7 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0035] Figure 8 For the present invention Figure 3 Enlarged structural diagram at B in the middle.

[0036] In the figure: 1. Equipment table; 2. Bottom plate; 3. Die lifter body; 4. First spring; 5. Accommodating chamber; 501. Small ball; 502. Large ball; 6. First oil passage; 7. Second oil passage; 8. Connecting pipe; 9. Solenoid hydraulic valve; 10. Oil inlet; 11. Limiting frame; 12. Second spring; 13. Piston rod; 14. Bottom block; 15. Distance meter; 16. Motor; 17. Shaft rod; 18. Adjustment block. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-8 The present invention provides a technical solution: a hydraulically length-adjustable die lifter, comprising an equipment platform 1, and a bottom plate 2 fixed to the equipment platform 1 by bolts, characterized in that a die lifter body 3 is slidably mounted on the top of the bottom plate 2;

[0039] The top inner side of the die lifter body 3 is provided with accommodating cavities 5 at equal intervals, and a large ball 502 is rotatably installed on the inner side of the accommodating cavities 5; the inner bottom side of the die lifter body 3 is provided with a first oil passage 6, and the inner top side of the die lifter body 3 is provided with a second oil passage 7; a limit frame 11 is slidably installed up and down inside the die lifter body 3; piston rods 13 are provided on the left and right sides of the die lifter body 3, the bottom of the piston rod 13 extends to the outside of the die lifter body 3, the bottom of the piston rod 13 is fixedly connected to a bottom block 14, and a rangefinder 15 is provided at the bottom of the die lifter body 3; adjusting blocks 18 are slidably installed on the left and right sides of the bottom plate 2, the cross section of the adjusting block 18 is an inclined structure, and the inclination directions of the left and right monomers of the adjusting block 18 are opposite.

[0040] The bottom of the die lifter body 3 extends to the inside of the bottom plate 2 , and a first spring 4 for resetting the die lifter body 3 downward is arranged inside the bottom plate 2 . The die lifter body 3 is reset downward by the first spring 4 .

[0041] A plurality of small balls 501 are arranged at the bottom of the accommodating cavity 5, and the small balls 501 rotate inside the mold lifter body 3; wherein the outer surface of the small balls 501 fits tightly with the outer surface of the large balls 502, so that the large balls 502 can rotate easily.

[0042] A connecting pipe 8 is installed on the left side of the mold lifter body 3 , and the first oil passage 6 and the second oil passage 7 are connected through the connecting pipe 8 .

[0043] An electromagnetic hydraulic valve 9 is provided on the outer side of the connecting pipe 8 , and the oil inlet of the second oil passage 7 is controlled by providing the electromagnetic hydraulic valve 9 .

[0044] An oil inlet 10 is provided on the left side of the die lifter body 3 , and the oil inlet 10 is communicated with the first oil passage 6 .

[0045] A second spring 12 is disposed inside the mold lifter body 3 to reset the limit frame 11 upward. The limit frame 11 is located outside the large ball 502 .

[0046] The cross section of the bottom block 14 is an inclined structure, and the bottom block 14 is located directly above the adjustment block 18 .

[0047] A motor 16 is installed on the left side inside the bottom plate 2 , and the output end of the motor 16 is connected to a shaft 17 via a coupling, so that the motor 16 drives the shaft 17 to rotate.

[0048] The outer surface of the shaft 17 is in a bidirectional threaded structure, and the shaft 17 is connected to the adjustment block 18 by a threaded connection; wherein, the movement directions of the left and right units of the adjustment block 18 are opposite.

[0049] When using the hydraulically adjustable length die lifter, Figure 1 and Figure 2 The bottom plate 2 is mounted inside the equipment platform 1 by bolts, and the top of the large ball 502 is lower than the upper surface of the equipment platform 1 in the initial process;

[0050] like Figure 3 , Figure 4 and Figure 5 The large ball 502 is rotatably arranged inside the mold lifter body 3, and the small ball 501 is arranged to make the large ball 502 rotate better;

[0051] like Figure 6 , Figure 7 and Figure 8The oil inlet 10 is connected with the external oil circuit. When the top mold of the equipment table 1 needs to be lifted, oil is introduced into the oil inlet 10 and the first oil circuit channel 6, so that the piston rod 13 is lifted downward. When the piston rod 13 is lifted and fully extended, it contacts the adjusting block 18. After the piston rod 13 contacts the adjusting block 18, the mold lifter body 3 is lifted. The mold lifter body 3 drives the large ball 502 to move upward to lift the mold. In the initial process, when the piston rod 13 is fully lifted downward, it just contacts the upper surface of the adjusting block 18. When the mold lifting height needs to be adjusted, the motor 16 drives the shaft 17 to rotate. The outer surface of the shaft 17 is a two-way threaded structure. The connection between the shaft 17 and the adjustment block 18 is a threaded connection, so that the shaft 17 drives the adjustment blocks 18 on the left and right sides to move inward by rotating, so that the distance between the adjustment block 18 and the bottom block 14 changes, so that when the piston rod 13 moves downward, the contact position between the bottom block 14 and the adjustment block 18 changes, and the initial position of the adjustment block 18 is measured by the distance meter 15 and set to h1. The position of the adjustment block 18 after moving is measured by the distance meter 15 and is h2, then the lifting height H of the die lifter body 3 is h1-h2, so the moving position of the adjustment block 18 is controlled by the motor 16, and the lifting height of the die lifter body 3 can be adjusted;

[0052] like Figure 3 , Figure 5 and Figure 7 When the mold lifter body 3 is lifted up, the large ball 502 lifts up the mold, making it convenient for the staff to move the mold. During the process of the mold lifter body 3 driving the mold to descend, in order to prevent the large ball 502 from sliding and causing the mold position to shift, the large ball 502 needs to be locked and fixed, and the electromagnetic hydraulic valve 9 is opened. During the initial process, the limit frame 11 is reset upward by the second spring 12. After the electromagnetic hydraulic valve 9 is opened, oil flows into the first oil channel 6, and the limit frame 11 moves downward under pressure, so that the limit frame 11 squeezes and fixes the surface of the large ball 502 downward, locks the large ball 502, and prevents the mold lifter body 3 from shifting when it moves downward. This is the entire working process of the hydraulic length-adjustable mold lifter.

[0053] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulically length-adjustable die lifter, comprising a device platform (1) and a base plate (2) fixed to the device platform (1) by bolts, characterized in that: A mold lifter body (3) is slidably mounted on the top of the bottom plate (2); The top inner side of the mold lifter body (3) is provided with accommodating cavities (5) at equal intervals, a large ball (502) is rotatably mounted inside the accommodating cavity (5), the inner bottom side of the mold lifter body (3) is provided with a first oil passage (6), and the inner top side of the mold lifter body (3) is provided with a second oil passage (7); A limit frame (11) is installed in the mold lifter body (3) for sliding up and down movement; The left and right sides of the mold lifter body (3) are both provided with piston rods (13), and the bottom of the piston rod (13) extends to the outside of the mold lifter body (3), the bottom of the piston rod (13) is fixedly connected with a bottom block (14), and the bottom of the mold lifter body (3) is provided with a distance meter (15); Adjustment blocks (18) are slidably mounted on both left and right sides of the bottom plate (2), and the cross section of the adjustment block (18) is an inclined structure, and the inclination directions of the left and right monomers of the adjustment block (18) are opposite.

2. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: The bottom of the die lifter body (3) extends to the inside of the bottom plate (2), and a first spring (4) is arranged inside the bottom plate (2) to reset the die lifter body (3) downward.

3. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: A plurality of small balls (501) are arranged at the bottom of the accommodating cavity (5), and the small balls (501) rotate inside the mold lifter body (3); The outer surface of the small ball (501) and the outer surface of the large ball (502) are tightly fitted.

4. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: A connecting pipe (8) is installed on the left side of the mold lifter body (3), and the first oil passage (6) and the second oil passage (7) are connected via the connecting pipe (8).

5. The hydraulic length-adjustable die lifter according to claim 4, characterized in that: An electromagnetic hydraulic valve (9) is arranged on the outside of the connecting pipe (8).

6. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: An oil inlet (10) is provided on the left side of the mold lifter body (3), and the oil inlet (10) is communicated with the first oil passage (6).

7. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: A second spring (12) for resetting the limit frame (11) upward is arranged inside the mold lifter body (3), and the limit frame (11) is located outside the large ball (502).

8. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: The cross section of the bottom block (14) is an inclined structure, and the bottom block (14) is located directly above the adjustment block (18).

9. The hydraulic length-adjustable die lifter according to claim 1, characterized in that: A motor (16) is installed on the left side inside the base plate (2), and the output end of the motor (16) is connected to a shaft (17) via a coupling.

10. The hydraulic length-adjustable die lifter according to claim 9, characterized in that: The outer surface of the shaft rod (17) is in a bidirectional threaded structure, and the connection between the shaft rod (17) and the adjustment block (18) is a threaded connection; Wherein, the adjustment block (18) moves in opposite directions between the left and right monomers.

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