Vertical lifting device of pressure chamber cover

Abstract

The utility model relates to the field of tests of geotechnical engineering and geological engineering, in particular to a vertical lifting device of a pressure chamber cover, and aims to solve the technical problem that a lifting device in the prior art is not highly adaptive to a triaxial system with an axial loading system on the top. The lifting device comprises a lifting frame, a sliding rail, a movable base, a height adjusting mechanism and a frame. The lifting frame is used for controlling the height of the pressure chamber cover, the movable base is used for bearing the pressure chamber to slide between the loading frame and the lifting frame on the sliding rail, and the height adjusting mechanism is used for controlling the locking state switching of the movable base and the loading frame. The lifting of the pressure chamber cover by the lifting device is not limited by the height of the loading frame, and the lifting device can be applied to a three-axis system with an axial loading system on the top; the technical problems that an existing lifting device shields hardware on the upper portion of the top of a partial dynamic triaxial apparatus pressure chamber, and the adaptability of a triaxial system with the limited distance between an upper axial loading system and a base is not high are solved.

Description

Technical Field

[0001] The utility model relates to the experimental test field of geotechnical engineering and geological engineering, in particular to a vertical lifting device for a pressure chamber cover. Background Art

[0002] Vibration triaxial tests are often used to determine the dynamic properties of soil. However, the weight of the pressure chamber cover and the position limitations of the loading system in traditional systems make the sample loading and unloading process cumbersome and usually requires the assistance of multiple people.

[0003] The existing vertical lifting device is only suitable for equipment with no shielding on the top. For the KTL servo motor vibration triaxial test system with a motor installed on the top, this device is not applicable due to space limitations. Utility Model Content

[0004] The purpose of the utility model is to provide a vertical lifting device for a pressure chamber cover, so as to alleviate the technical problems in the related art that the lifting device blocks the upper hardware on the top of the pressure chamber of a partial dynamic triaxial instrument and the triaxial system has a limited distance between the upper axial loading system and the base and has low adaptability.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] The lifting device provided by the utility model comprises: a lifting frame, a slide rail, a movable base slidably connected to the slide rail, and a height adjustment mechanism;

[0007] The lifting frame is arranged parallel to the rear side of the loading frame, and a winch is fixedly installed on one side of the lifting frame;

[0008] The rotation of the winch drives the cable to pull the pressure chamber cover upward;

[0009] The slide rail crosses the lifting frame and the loading frame; the movable base is slidably connected to the slide rail;

[0010] The mobile base includes an adjustment frame and an adjustment plate arranged below the adjustment frame, and the pressure chamber is connected to the adjustment plate after passing through the adjustment frame;

[0011] The height adjustment mechanism comprises an eccentric wheel and a connecting rod, wherein the eccentric wheel is arranged above the adjustment frame, and the connecting rod is connected to the eccentric wheel and is connected to the adjustment plate after passing through the adjustment frame;

[0012] When the adjustment plate is at the lowest point, the movable base is locked with the loading frame;

[0013] When the eccentric wheel rotates to drive the adjustment plate to rise, thereby driving the pressure chamber to move upward, the movable base and the loading frame are unlocked;

[0014] The height adjustment mechanism is rotated, the adjustment plate is moved up and unlocked, the movable base brings the pressure chamber and slides along the slide rail to the bottom of the lifting frame, the capstan is rotated to lift the pressure chamber cover, and the loading and unloading of the sample are not restricted.

[0015] Furthermore, the adjustment frame is clamped and slid on the slide rail, a rectangular notch is arranged at the bottom of the upper adjustment frame, and a through hole is arranged on the upper surface of the adjustment frame;

[0016] The adjustment plate is arranged in parallel in the notch, and the distance between the adjustment frame and the adjustment plate is adjustable;

[0017] The pressure chamber is connected to the upper end of the adjustment plate through the through hole, and the pressure chamber is fixed, so the experiment will not be affected by changes in placement position during the experiment.

[0018] Furthermore, the height adjustment mechanism is disposed at the four corners of the adjustment frame, the outer edge of the eccentric wheel is always in contact with the upper surface of the adjustment frame, and the rotation of the height adjustment mechanism can adjust the distance between the adjustment frame and the adjustment plate.

[0019] Furthermore, as each of the height adjustment mechanisms rotates from vertical to horizontal, the distance between the adjustment frame and the adjustment plate decreases, the adjustment plate moves upward relative to the slide rail, the height of the adjustment plate increases, and the pressure chamber is lifted along with the adjustment plate.

[0020] Furthermore, a through groove is provided at the bottom of the adjustment plate, and the through groove corresponds to the protrusion at the upper end of the vibration triaxial instrument base;

[0021] When the height adjustment mechanism is vertical, the adjustment plate falls with gravity, the through slot is engaged with the protrusion, the movable base is locked with the loading frame, and the pressure chamber is fixed at the center of the loading frame, which is convenient for loading experiments;

[0022] When the height adjustment mechanism is vertical, the adjustment plate is lifted, the through slot is separated from the protrusion, the movable base is unlocked from the loading frame, and the movable base can carry the pressure chamber to slide along the slide rail to below the lifting frame.

[0023] Furthermore, the top of the lifting frame is rotatably connected to multiple fixed pulleys, and the winch is a self-locking winch. The cable of the winch passes around each of the fixed pulleys and is connected to the top of the pressure chamber cover, so as to lift the pressure chamber cover from the bottom of the lifting frame upward; after the winch is rotated to lift the pressure chamber cover, the self-locking winch fixes the height of the pressure chamber cover, and the pressure chamber cover will not interfere with the loading and unloading of samples.

[0024] Furthermore, the lifting frame also includes a movable pulley, which is connected to the top of the pressure chamber cover. After the cable passes around the fixed pulleys and the movable pulley, the fixed pulleys and the movable pulley form a pulley group, which can enable the operator to perform the lifting operation more labor-saving and is used to assist in lifting the pressure chamber cover.

[0025] Furthermore, a hook is provided at the bottom of the movable pulley, and the hook is used to connect the movable pulley and the pressure chamber cover when loading and unloading the sample. When the sample loading and unloading is completed, the hook is separated from the pressure chamber cover to prevent the unseparated cable from interfering with the experimental process in the loading frame.

[0026] Furthermore, there are two slide rails, which are symmetrically arranged at both ends of the adjustment plate, and the cross-section of each slide rail is trapezoidal, so the guidance is more stable.

[0027] Furthermore, it also includes a frame, the upper surface of which is flush with the upper end of the vibration triaxial instrument base, and the frame is threadedly connected to the lifting frame to support the lifting frame and the slide rail;

[0028] The frame also includes adjustable foot pads, which can adjust the height of the frame to adapt to uneven ground.

[0029] Based on the above technical solutions, the beneficial effects of the present invention are analyzed as follows:

[0030] The utility model provides a convenient vibration triaxial instrument pressure chamber cover lifting device, comprising: a lifting frame, a slide rail, a movable base slidably connected to the slide rail, and a height adjustment mechanism;

[0031] The lifting frame is arranged parallel to the rear side of the loading frame, and a winch is fixedly installed on one side of the lifting frame;

[0032] The rotation of the winch drives the cable to pull the pressure chamber cover upward;

[0033] The slide rail crosses the lifting frame and the loading frame; the movable base is slidably connected to the slide rail;

[0034] The mobile base includes an adjustment frame and an adjustment plate arranged below the adjustment frame, and the pressure chamber is connected to the adjustment plate after passing through the adjustment frame;

[0035] The height adjustment mechanism comprises an eccentric wheel and a connecting rod, wherein the eccentric wheel is arranged above the adjustment frame, and the connecting rod is connected to the eccentric wheel and is connected to the adjustment plate after passing through the adjustment frame;

[0036] When the adjustment plate is at the lowest point, the movable base is locked with the loading frame;

[0037] When the eccentric wheel rotates to drive the adjustment plate to rise, thereby driving the pressure chamber to move upward, the movable base and the loading frame are unlocked.

[0038] In specific application, the pressure chamber is installed on the mobile base under the lifting frame, the pressure chamber cover is removed, the capstan is rotated to lift the pressure chamber cover, and the sample is loaded;

[0039] The capstan is rotated to lower the pressure chamber cover, and the pressure chamber cover is installed. Then, the mobile base slides the pressure chamber along the slide rail to the bottom of the loading frame, and the height adjustment mechanism is turned to switch the mobile base to a locked state and lock it with the loading frame, and then the experiment is carried out;

[0040] After the experiment is completed, the height adjustment mechanism is pulled to switch the movable base from a locked state to an unlocked state, and then the movable base slides the pressure chamber along the slide rail to the bottom of the lifting frame, removes the pressure chamber cover, and turns the winch to lift the pressure chamber cover to unload the sample.

[0041] It can be seen that compared with the existing technology, the lifting device of the pressure chamber cover is not limited by the height of the loading frame, and can be applied to the three-axis system with an axial loading system on the top, overcoming the technical problems of the existing lifting device blocking the upper hardware of the top of the pressure chamber of the partial dynamic triaxial instrument and the low adaptability of the three-axis system with a limited distance between the upper axial loading system and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the overall structure of the lifting device provided by the embodiment of the utility model during an experiment;

[0044] Figure 2 It is a structural schematic diagram when the movable base under the loading frame and the pressure chamber are in a locked state;

[0045] Figure 3 It is a structural schematic diagram when the movable base under the loading frame and the pressure chamber are in an unlocked state;

[0046] Figure 4 It is a structural schematic diagram when the movable base and the height adjustment mechanism are in a locked state;

[0047] Figure 5 It is a structural schematic diagram when the movable base and the height adjustment mechanism are in an unlocked state;

[0048] Figure 6 It is a schematic diagram of the overall structure when the mobile base and the reaction chamber slide to the bottom of the lifting frame;

[0049] Figure 7 It is a schematic diagram of the overall structure of the pressure chamber cover when it is connected with the hook;

[0050] Figure 8 It is a schematic diagram of the overall structure when the pressure chamber cover is lifted;

[0051] Fig. 9 It is a second overall structural schematic diagram when the pressure chamber cover is lifted.

[0052] icon:

[0053] 001, pressure chamber; 002, pressure chamber cover; 003, loading frame; 004, protrusion;

[0054] 100, lifting frame; 110, winch; 120, fixed pulley; 130, movable pulley; 140, hook;

[0055] 200, slide rail;

[0056] 300, movable base; 310, adjustment frame; 311, notch; 312, through hole; 320, adjustment plate; 321, through slot;

[0057] 400, height adjustment mechanism; 410, eccentric wheel; 420, connecting rod;

[0058] 500, frame; 510, adjustable foot pads. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0060] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0061] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0062] The existing lifting device has technical problems such as hardware shielding on the top of the pressure chamber of a partial dynamic triaxial instrument and low adaptability to the triaxial system with a limited distance between the upper axial loading system and the base.

[0063] In view of this, the utility model provides a convenient vibration triaxial instrument pressure chamber cover 002 lifting device, comprising: a lifting frame 100, a slide rail 200, a mobile base 300 slidably connected to the slide rail 200, and a height adjustment mechanism 400; the lifting frame 100 is arranged parallel to the rear side of the loading frame 003, and a winch 110 is fixedly installed on one side of the lifting frame 100; the winch 110 rotates to drive the cable to pull the pressure chamber cover 002 up; the slide rail 200 crosses the lifting frame 100 and the loading frame 003; the mobile base 300 is slidably connected to the slide rail 200; the mobile base 300 includes an adjustment frame 310 and a setting The adjustment plate 320 is below the adjustment frame 310, and the pressure chamber 001 is connected to the adjustment plate 320 after passing through the adjustment frame 310; the height adjustment mechanism 400 includes an eccentric wheel 410 and a connecting rod 420, the eccentric wheel 410 is arranged above the adjustment frame 310, and the connecting rod 420 is connected to the eccentric wheel 410 and is connected to the adjustment plate 320 after passing through the adjustment frame 310; when the adjustment plate 320 is at the lowest point, the movable base 300 is locked with the loading frame 003; when the eccentric wheel 410 rotates to drive the adjustment plate 320 to rise, thereby driving the pressure chamber 001 to move upward, the movable base 300 is unlocked from the loading frame 003.

[0064] Based on the above technical solutions, the lifting device provided by the utility model can achieve the following technical effects:

[0065] It can be seen that compared with the prior art, the lifting device of the pressure chamber cover 002 is not restricted by the height of the loading frame 003, and can be applied to the three-axis system with an axial loading system installed on the top, overcoming the technical problems of the existing lifting device blocking the upper hardware of the top of the pressure chamber 001 of the partial dynamic triaxial instrument and the low adaptability of the three-axis system due to the limited distance between the upper axial loading system and the base.

[0066] The following combination Figures 1 to 9 The structure and shape of the lifting device provided in this embodiment are described in detail:

[0067] Furthermore, the adjustment frame 310 is clamped and slid on the slide rail 200, a rectangular notch 311 is provided at the bottom of the upper adjustment frame 310, and a through hole 312 is provided on the upper surface of the adjustment frame 310;

[0068] The adjustment plate 320 is arranged in parallel in the notch 311, and the distance between the adjustment frame 310 and the adjustment plate 320 is adjustable;

[0069] The pressure chamber 001 is connected to the upper end of the adjustment plate 320 through the through hole 312. The pressure chamber 001 is fixed and will not be affected by changes in placement during the experiment.

[0070] Furthermore, height adjustment mechanisms 400 are provided at the four corners of the adjustment frame 310, and the outer edge of the eccentric wheel 410 is always in contact with the upper surface of the adjustment frame 310. The rotation of the height adjustment mechanism 400 can adjust the distance between the adjustment frame 310 and the adjustment plate 320. The height of the adjustment frame 310 is fixed, thereby controlling the height of the adjustment plate 320.

[0071] Furthermore, as each height adjustment mechanism 400 rotates from vertical to horizontal, the distance between the adjustment frame 310 and the adjustment plate 320 is reduced, the adjustment plate 320 moves upward relative to the slide rail 200, the height of the adjustment plate 320 increases, and the pressure chamber 001 is lifted along with the adjustment plate 320.

[0072] Furthermore, a through slot 321 is provided at the bottom of the adjustment plate 320, and the through slot 321 corresponds to the protrusion 004 at the upper end of the vibration triaxial instrument base;

[0073] When the height adjustment mechanism 400 is vertical, the adjustment plate 320 falls with gravity, the distance between the adjustment frame 310 and the adjustment plate 320 reaches the maximum value, the through slot 321 and the protrusion 004 are engaged together, the movable base 300 and the loading frame 003 are locked, and the pressure chamber 001 is fixed in the center of the loading frame 003, which is convenient for loading experiments;

[0074] When the height adjustment mechanism 400 is vertical, the adjustment plate 320 is lifted, the distance between the adjustment frame 310 and the adjustment plate 320 reaches the minimum value, the through groove 321 is separated from the protrusion 004, the movable base 300 and the loading frame 003 are unlocked, and the movable base 300 can carry the pressure chamber 001 to slide along the slide rail 200 to the bottom of the lifting frame 100, and the installation or removal of the pressure chamber cover 002 is not limited by the height of the loading frame 003.

[0075] Furthermore, a plurality of fixed pulleys 120 are rotatably connected to the top of the lifting frame 100, and the winch 110 is a self-locking winch. The cable of the winch 110 passes around the fixed pulleys 120 and is connected to the top of the pressure chamber cover 002, so as to lift the pressure chamber cover 002 from the bottom of the lifting frame 100 upward, and each fixed pulley 120 is used to assist in lifting the pressure chamber cover 002; after the winch 110 is rotated to lift the pressure chamber cover 002, the self-locking winch will fix the height of the pressure chamber cover 002, and the pressure chamber cover 002 will not interfere with the loading and unloading of the sample, and the entire process of sample loading and unloading can be completed by one person.

[0076] Preferably, the lifting frame 100 also includes a movable pulley 130, which is connected to the top of the pressure chamber cover 002. After the cable passes around the fixed pulleys 120 and the movable pulley 130, the fixed pulleys 120 and the movable pulley 130 form a pulley group, which can enable the operator to perform the lifting operation more labor-saving and avoid the problem of rotating the winch 110 too strenuously, and is used to assist in lifting the pressure chamber cover 002.

[0077] Preferably, a hook 140 is provided at the bottom of the movable pulley 130, and the hook 140 is used to connect the movable pulley 130 and the pressure chamber cover 002 when loading and unloading the sample. When the sample loading and unloading is completed, the hook 140 is separated from the pressure chamber cover 002 to prevent the unseparated cable from interfering with the experimental process in the loading frame 003.

[0078] Preferably, there are two slide rails 200 symmetrically arranged at both ends of the adjustment plate 320 , and each slide rail 200 has a trapezoidal cross-section, which provides smoother guidance, good guidance, low noise and vibration, and self-centering characteristics.

[0079] Furthermore, it also includes a frame 500, the upper surface of the frame 500 is flush with the upper end of the vibration triaxial instrument base, and the frame 500 is threadedly connected to the lifting frame 100 to support the lifting frame 100 and the slide rail 200;

[0080] The frame 500 further includes an adjustable foot pad 510 , which can adjust the height of the frame 500 to adapt to uneven ground and provide reliable support for the lifting frame 100 and the slide rail 200 .

[0081] In summary, the specific working process of the lifting device provided in this embodiment is as follows:

[0082] The pressure chamber 001 is installed on the mobile base 300 under the lifting frame 100. The bottom of the pressure chamber 001 is connected to the adjustment plate 320. The hook 140 is hooked on the top of the pressure chamber cover 002. The pressure chamber cover 002 is separated. The capstan 110 is rotated to lift the pressure chamber cover 002 to load the sample.

[0083] Turn the winch 110 to lower the pressure chamber cover 002, install the pressure chamber cover 002, separate the hook 140 from the pressure chamber cover 002, then slide the mobile base 300 with the pressure chamber 001 along the slide rail 200 to the bottom of the loading frame 003, turn the height adjustment mechanism 400, the adjustment plate 320 falls, the through groove 322 is engaged with the protrusion 004, so that the mobile base 300 and the loading frame 003 are locked together, and then the experiment is carried out;

[0084] After the experiment is completed, the height adjustment mechanism 400 is pulled, the adjustment plate 320 is lifted, the through groove 322 is separated from the protrusion 004, so that the movable base 300 and the loading frame 003 are unlocked, and then the movable base 300 slides along the slide rail 200 with the pressure chamber 001 to the bottom of the lifting frame, the hook 140 is hooked on the top of the pressure chamber cover 002, the pressure chamber cover 002 is separated, and the winch 110 is turned to lift the pressure chamber cover 002 to unload the sample.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A vertical lifting device for a pressure chamber cover, characterized in that: include: A lifting frame (100), a slide rail (200), a movable base (300) slidably connected to the slide rail (200), and a height adjustment mechanism (400); The lifting frame (100) is arranged parallel to the rear side of the loading frame (003), and a winch (110) is fixedly installed on one side of the lifting frame (100); The winch (110) rotates to drive the cable to pull the pressure chamber cover (002) upward; The slide rail (200) crosses the lifting frame (100) and the loading frame (003); the movable base (300) is slidably connected to the slide rail (200); The mobile base (300) comprises an adjustment frame (310) and an adjustment plate (320) arranged below the adjustment frame (310); the pressure chamber (001) passes through the adjustment frame (310) and is connected to the adjustment plate (320); The height adjustment mechanism (400) comprises an eccentric wheel (410) and a connecting rod (420); the eccentric wheel (410) is arranged above the adjustment frame (310); the connecting rod (420) is connected to the eccentric wheel (410) and passes through the adjustment frame (310) to be connected to the adjustment plate (320); When the adjustment plate (320) is located at the lowest point, the movable base (300) is locked with the loading frame (003); When the eccentric wheel (410) rotates to drive the adjustment plate (320) to rise, thereby driving the pressure chamber (001) to move upward, the movable base (300) and the loading frame (003) are unlocked.

2. The lifting device according to claim 1, characterized in that: The adjusting frame (310) is clamped and slid on the slide rail (200), a rectangular notch (311) is provided at the bottom of the upper adjusting frame (310), and a through hole (312) is provided on the upper surface of the adjusting frame (310); The adjustment plate (320) is arranged in parallel in the notch (311), and the distance between the adjustment frame (310) and the adjustment plate (320) is adjustable; The pressure chamber (001) is connected to the upper end of the adjustment plate (320) through the through hole (312).

3. The lifting device according to claim 2, characterized in that: The height adjustment mechanisms (400) are arranged at the four corners of the adjustment frame (310), and the rotation of the height adjustment mechanisms (400) can adjust the distance between the adjustment frame (310) and the adjustment plate (320).

4. The lifting device according to claim 3, characterized in that: As each of the height adjustment mechanisms (400) rotates from vertical to horizontal, the adjustment plate (320) moves upward relative to the slide rail (200), and the pressure chamber (001) is lifted along with the adjustment plate (320).

5. The lifting device according to claim 4, characterized in that: The bottom of the adjustment plate (320) is provided with a through groove (321), and the through groove (321) corresponds to the protrusion (004) at the upper end of the vibration triaxial instrument base; When the height adjustment mechanism (400) is vertical, the adjustment plate (320) falls due to gravity, the through slot (321) and the protrusion (004) are engaged together, and the movable base (300) and the loading frame (003) are locked; When the height adjustment mechanism (400) is vertical, the adjustment plate (320) is lifted, the through slot (321) is separated from the protrusion (004), and the movable base (300) and the loading frame (003) are unlocked.

6. The lifting device according to claim 5, characterized in that: The top of the lifting frame (100) is rotatably connected to a plurality of fixed pulleys (120), and the winch (110) is a self-locking winch. The cable of the winch (110) passes around each of the fixed pulleys (120) and is connected to the top of the pressure chamber cover (002), so as to lift the pressure chamber cover (002) upward from the bottom of the lifting frame (100).

7. The lifting device according to claim 6, characterized in that: The lifting frame (100) further comprises a movable pulley (130), wherein the movable pulley (130) is connected to the top end of the pressure chamber cover (002). After the cable passes around each of the fixed pulleys (120) and the movable pulley (130), each of the fixed pulleys (120) and the movable pulley (130) forms a pulley block for assisting in lifting the pressure chamber cover (002).

8. The lifting device according to claim 7, characterized in that: A hook (140) is provided at the bottom of the movable pulley (130), and the hook (140) is used to connect the movable pulley (130) and the pressure chamber cover (002) when loading and unloading the sample. When the sample loading and unloading is completed, the hook (140) is separated from the pressure chamber cover (002).

9. The lifting device according to claim 8, characterized in that: There are two slide rails (200) symmetrically arranged at two ends of the adjustment plate (320), and each slide rail (200) has a trapezoidal cross section.

10. The lifting device according to claim 9, characterized in that: It also includes a frame (500), the upper surface of the frame (500) is flush with the upper end of the vibration triaxial instrument base, and the frame (500) is threadedly connected to the lifting frame (100); The frame (500) further comprises an adjustable foot pad (510), and the adjustable foot pad (510) can adjust the height of the frame (500).

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