A lever-type locking mechanism

Abstract

The utility model discloses a lever type locking mechanism, including support, counterweight, locking assembly and locking seat, the lever is rotatably connected on the support, and the one end of lever is equipped with the lifting end, and its other end is equipped with the mounting seat, the counterweight is located on the lever, the locking assembly includes the core post, the guide sleeve and the outer sleeve that suit in proper order, and the outer sleeve is rotatably connected with the mounting seat, the peripheral wall of guide sleeve is equipped with the guide groove, and the guide groove includes four inverted V -shaped slots that splice in proper order, and the peripheral wall of core post is equipped with the first short column that slides along the guide groove, the bottom of core post is equipped with the clamping block, the locking seat is located below locking assembly, and its top is equipped with the positioning groove, when the first short column slides along one in inverted V -shaped slot, can drive core post to make the lifting movement and rotate 90 about its own axis, to make the clamping block lock in the positioning groove or separate from the positioning groove. The utility model provides lever type locking mechanism, through the switching of locking assembly and locking seat between locking and unlocking state, realizes the locking to the position after the swing of steel hook.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a lever-type locking mechanism. Background Technology

[0002] In water conservancy projects, horizontal discharge pipes are widely used in reservoirs, canals, and other water facilities, primarily for regulating water levels and controlling water flow. They are crucial facilities for ensuring the rational allocation of water resources. Their structure is typically built with masonry, concrete, or reinforced concrete, with a slope usually between 1:2 and 1:3. The top must extend beyond the highest water level and be equipped with vents to balance the air pressure inside and outside the pipe. Discharge holes are spaced vertically, and each hole is controlled by a gate. During operation, water flows through the horizontal pipe into a stilling basin or stilling well to dissipate energy, and then is discharged through a downstream culvert, achieving safe water release.

[0003] Currently, the opening of gates in most horizontal water discharge pipes still relies on manual operation. This method is not only labor-intensive, but also requires operators to work in water-adjacent areas, posing a high safety risk. To improve this situation, some facilities adopt a mechanized solution: a track is installed on the horizontal pipe body, and a trolley that can move back and forth is mounted on the track. The trolley is equipped with a swingable steel hook, the end of which engages with the gate handle. A winch pulls a steel wire rope to move the trolley along the track, thereby driving the gate to open. At the same time, an additional independent steel wire rope is installed to connect the steel hook. Pulling this steel wire rope controls the swing of the steel hook, causing it to engage with the gate handle to lock it in place.

[0004] However, when controlling the swing of the steel hook with a wire rope, it is difficult to precisely control the swing amplitude, and the steel hook itself has swing inertia, making it difficult for it to accurately engage with the gate handle, which seriously affects the gate opening efficiency.

[0005] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a lever-type locking mechanism, which aims to solve the technical problem of difficulty in controlling the swing position of the steel hook in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A lever-type locking mechanism, comprising:

[0009] A support, on which a lever is rotatably connected, with a lifting end at one end and a mounting seat at the other end;

[0010] A counterweight is mounted on the lever and located between the lifted end and the support.

[0011] The locking assembly includes a core post, a guide sleeve, and an outer sleeve, sequentially arranged from the inside out. The outer sleeve is rotatably connected to a mounting base, and the rotation center lines of the outer sleeve and the mounting base, as well as the support, are parallel to the rotation center line of the lever. The guide sleeve has a guide groove on its peripheral wall, which includes four sequentially joined inverted V-shaped grooves. The core post has several short first posts that slide along the guide grooves on its peripheral wall. The bottom of the core post has a locking block with an inverted T-shaped structure.

[0012] The locking seat is located below the locking assembly, and its top is provided with a positioning groove with an inverted T-shaped structure;

[0013] When the first short post slides along one of the inverted V-shaped grooves, it can drive the core post to move up and down and rotate 90° around its own axis, so that the locking block is locked in the positioning groove or disengaged from the positioning groove.

[0014] Furthermore, the guide sleeve includes an upper limit sleeve and a lower limit sleeve, and the guide groove is formed by a first gap between the upper limit sleeve and the lower limit sleeve; a plurality of first locking screws and second locking screws are screwed onto the outer sleeve, the first locking screws abutting against the peripheral wall of the upper limit sleeve; the second locking screws abutting against the peripheral wall of the lower limit sleeve.

[0015] Furthermore, both the upper and lower limit sleeves have shoulders at their ends furthest from the guide groove that abut against the outer sleeve end face.

[0016] Furthermore, the upper limit sleeve and the lower limit sleeve have annular grooves on their peripheral walls. The annular groove of the upper limit sleeve is on the same horizontal plane as the first locking screw, and the annular groove of the lower limit sleeve is on the same horizontal plane as the second locking screw.

[0017] Furthermore, the inverted V-shaped groove includes a sliding section, a buffer section, and a sliding out section connected in sequence. The width of the sliding section gradually decreases in the upward direction, the buffer section extends in the vertical direction, and the width of the sliding out section gradually decreases in the downward direction. The upper end of the sliding section is connected to the side wall of the buffer section, and the upper end of the sliding out section is connected to the lower end of the buffer section.

[0018] Furthermore, the outer casing has two symmetrically arranged rotating pins on its periphery; the mounting base has a rectangular frame structure, the locking assembly is located inside the mounting base, and the two rotating pins are rotatably connected to the corresponding sides of the mounting base.

[0019] Furthermore, the locking seat includes a base, two symmetrically arranged legs on the base, and a locking block rotatably connected to the two legs. A positioning groove is formed on the top of the locking block, and the rotation center line of the locking block and the legs and the outer sleeve are parallel to the rotation center line of the mounting seat.

[0020] Furthermore, the top of the support leg is provided with a limiting part extending above the locking block, and there is a second gap between the limiting part and the locking block.

[0021] Furthermore, it also includes a lifting mechanism, which includes a fixed frame, a drive translation component, a lifting plate, and a lifting rod; the fixed frame is slidably connected to a transmission rod, and the drive translation component is connected to the transmission rod to drive the transmission rod to reciprocate; the lifting plate is fixed on the transmission rod, and the lifting plate has an inclined groove, and the lifting rod has a second short column slidably connected to the inclined groove. When the second short column slides along the inclined groove, it drives the lifting rod to reciprocate in a direction perpendicular to the movement of the transmission rod, and the lifting rod is used to push the lifting end of the lever upward.

[0022] Beneficial effects:

[0023] This invention provides a lever-type locking mechanism. The lever swings, causing the locking assembly to move up and down. During the contact between the locking block of the core column and the positioning groove of the locking seat, the core column and the outer sleeve move relative to each other. The first short column of the core column slides along the inverted V-shaped groove, forcing the core column to rotate 90° around its own axis. This allows the inverted T-shaped locking block to achieve vertical locking or parallel disengagement from the positioning groove, significantly improving the accuracy of locking and unlocking. This ensures the stable locking of the steel hook after swinging, guaranteeing that the steel hook reliably engages with the gate handle when the trolley moves. Simultaneously, four sequentially connected inverted V-shaped grooves form a continuous guide path. Each time the core column slides up and down relative to the outer sleeve, it forces the core column to rotate 90°, meeting the requirements for multiple cycles of locking and unlocking. Attached Figure Description

[0024] Figure 1 A structural diagram showing the locking assembly and locking seat in the locked state of the lever-type locking mechanism provided by this utility model;

[0025] Figure 2 An exploded view of the locking assembly and locking seat in the locked state of the lever-type locking mechanism provided by this utility model;

[0026] Figure 3 A structural diagram showing the unlocked state of the locking component and the locking seat in the lever-type locking mechanism provided by this utility model;

[0027] Figure 4 An exploded view of the locking component and the locking seat in the unlocked state of the lever-type locking mechanism provided by this utility model;

[0028] Figure 5 A structural diagram of the guide sleeve in the lever-type locking mechanism provided by this utility model;

[0029] Figure 6 Installation diagram of the lever-type locking mechanism provided by this utility model Figure 1 ;

[0030] Figure 7 Installation diagram of the lever-type locking mechanism provided by this utility model Figure 2;

[0031] Figure 8 The structural diagram of the lifting mechanism in the lever-type locking mechanism provided by this utility model.

[0032] Reference numerals: Support 1, Lever 2, Lifting end 21, Mounting base 22, Counterweight 3, Locking assembly 4, Core column 41, First short column 411, Guide sleeve 42, Upper limit sleeve 421, Lower limit sleeve 422, Shoulder 423, Annular groove 424, Outer sleeve 43, First locking screw 431, Second locking screw 432, Rotary pin 433, Guide groove 44, Inverted V-groove 441, Sliding section 4411, Buffer section 4412 , sliding section 4413, locking block 45, locking seat 6, positioning groove 61, base 62, support leg 63, limiting part 631, second gap 632, locking block 64, lifting mechanism 7, fixed frame 71, drive translation component 72, lifting plate 73, tilting groove 731, lifting rod 74, second short column 741, horizontal section 742, vertical section 743, transmission rod 75, trolley 8, steel hook 81, track 9, fixed seat 91. Detailed Implementation

[0033] This utility model provides a lever-type locking mechanism. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0035] Please see Figures 1 to 8As shown, this utility model provides a lever-type locking mechanism, including: a support 1, a counterweight 3, a locking assembly 4, and a locking seat 6; a lever 2 is rotatably connected to the support 1, one end of the lever 2 is provided with a lifting end 21, and the other end is provided with a mounting seat 22; the counterweight 3 is disposed on the lever 2 and is located between the lifting end 21 and the support 1; the locking assembly 4 includes a core column 41, a guide sleeve 42, and an outer sleeve 43 arranged sequentially from the inside out, the outer sleeve 43 is rotatably connected to the mounting seat 22, and the rotation center line of the outer sleeve 43 and the mounting seat 22 is parallel to the rotation center line of the support 1 and the lever 2; the guide sleeve 42 The peripheral wall of the core post 41 is provided with a guide groove 44, which includes four inverted V-shaped grooves 441 connected in sequence. The peripheral wall of the core post 41 is provided with a number of first short posts 411 that slide along the guide grooves 44. The bottom of the core post 41 is provided with a locking block 45 with an inverted T-shaped structure. The locking seat 6 is located below the locking assembly 4, and its top is provided with a positioning groove 61 with an inverted T-shaped structure. When the first short post 411 slides along one of the inverted V-shaped grooves 441, it can drive the core post 41 to move up and down and rotate 90° around its own axis, so that the locking block 45 is locked in the positioning groove 61 or disengaged from the positioning groove 61.

[0036] In the above, both the support 1 and the locking seat 6 are fixed on the trolley 8 used for opening and closing the gate. A swingable steel hook 81 is rotatably connected to the trolley 8. The steel hook 81 is located between the locking assembly 4 and the support 1, and the swing center line of the steel hook 81 is perpendicular to the swing center line of the lever 2. After the lever 2 acts on the steel hook 81, it can drive the steel hook 81 to swing downwards by a certain amplitude, ensuring that the steel hook 81 can be smoothly locked on the handle of the gate when it moves with the trolley 8.

[0037] In the initial state, lever 2 is in an unbalanced state due to the action of counterweight 3. At this time, locking component 4 is lifted, and the locking block 45 with an inverted T-shaped structure at the bottom of core column 41 is parallel to the inverted T-shaped positioning groove 61 at the top of locking seat 6.

[0038] When an external force lifts the lifting end 21 of lever 2 upwards, lever 2 rotates clockwise around support 1, and mounting base 22 drives locking assembly 4 to move downwards. At this time, lever 2 simultaneously presses down on steel hook 81, causing it to swing downwards. The locking block 45 at the bottom of core column 41 first abuts against the positioning groove 61 of locking seat 6. As lever 2 continues to rotate, outer sleeve 43 and core column 41 move relative to each other. The first short column 411 on core column 41 slides along the path of the inverted V-shaped groove 441 corresponding to guide groove 44. Combined with the tendency of lever 2 to rotate counterclockwise around support 1 under the gravity of counterweight 3 after being lifted, and with guide groove 44 as a reference, it is ensured that the first short column 411 of core column 41 slides upwards and then downwards, completing the movement path of an inverted V-shaped groove, causing core column 41 to complete the lifting and lowering movement relative to outer sleeve 43 and rotate 90° around its own axis. Figure 1 , 2As shown, at this time, the locking block 45 rotates 90° with the core column 41 and is perpendicular to the positioning groove 61. It is locked into the positioning groove 61 to complete the locking action of the locking component 4 and the locking seat 6, thereby locking the state of the lever 2 pressing down the steel hook 81, ensuring that the steel hook 81 is in the swing position, and ensuring that it can be smoothly locked on the gate handle when it moves with the trolley 8.

[0039] When it is necessary to release the position lock of the steel hook 81, the lifting end 21 of the lever 2 is lifted upward again by external force. The lever 2 rotates clockwise around the support 1, and the mounting base 22 drives the locking assembly 4 to move downward a certain distance (this distance is the height of the inverted V-shaped groove 441 in the vertical direction). The outer sleeve 43 and the core column 41 move relative to each other again. With the guide groove 44 as a reference, the first short column 411 on the core column 41 repeats the process of sliding upward and then downward, completing the movement path of one inverted V-shaped groove and driving the core column 41 to rotate 90° around its own axis. This causes the locking block 45 to rotate with the core column 41 and become parallel to the positioning groove 61, thereby disengaging from the positioning groove 61 and completing the unlocking action. At the same time, if Figure 3 , 4 As shown, lever 2 rotates counterclockwise around support 1 under the gravity of counterweight 3. Mounting base 22 then drives locking assembly 4 to move upward away from locking base 6, releasing the position lock of steel hook 81. Four sequentially spliced ​​inverted V-shaped grooves 441 form a continuous guide path. Whenever core column 41 slides up and down relative to outer sleeve 43, it can force core column 41 to rotate 90°, so as to meet the needs of multiple cycles of locking and unlocking of the mechanism and achieve precise locking of the swing position of steel hook 81.

[0040] It should be noted that the opening width of the positioning groove 61 is greater than the width of the locking block 45 and less than the length of the locking block 45. The width of its inner cavity is greater than the length of the locking block 45, so that when the locking block 45 is parallel to the positioning groove 61, the locking block 45 can smoothly enter the positioning groove 61. When the locking block 45 is rotated 90° and is perpendicular to the positioning groove 61, the locking block 45 is locked in the positioning groove 61.

[0041] Preferably, there are two first short columns 411, which are symmetrically arranged on the peripheral wall of the core column 41 and are respectively arranged in two inverted V-shaped grooves 441 with opposite positions, so that the core column 41 is subjected to balanced force during movement.

[0042] In a preferred embodiment, see [reference] Figure 1 , 35. The guide sleeve 42 includes an upper limit sleeve 421 and a lower limit sleeve 422. The guide groove 44 is formed by a first gap between the upper limit sleeve 421 and the lower limit sleeve 422. A plurality of first locking screws 431 and second locking screws 432 are screwed onto the outer sleeve 43. The first locking screws 431 abut against the peripheral wall of the upper limit sleeve 421. The second locking screws 432 abut against the peripheral wall of the lower limit sleeve 422.

[0043] The guide sleeve 42 is constructed by using a split upper limit sleeve 421 and lower limit sleeve 422. This transforms the complex guide groove 44 structure into the end face machining of two separate components. By controlling the fit between the end faces of the upper limit sleeve 421 and lower limit sleeve 422, the required guide groove 44 can be formed. This greatly reduces the machining difficulty of the guide groove 44 and also reduces the assembly difficulty of the guide sleeve 42 with the core post 41 and the outer sleeve 43. During assembly, the lower limit sleeve 422 can be first fitted onto the core post 41 and then assembled into the outer sleeve 43. Subsequently, the upper limit sleeve 421 is fitted between the core post 41 and the outer sleeve 43. Finally, multiple locking screws are used to circumferentially tighten the limit sleeves, achieving a stable positioning of the guide sleeve 42 within the outer sleeve 43.

[0044] Further, see Figure 5 The upper limit sleeve 421 and the lower limit sleeve 422 are both provided with shoulders 423 at their ends away from the guide groove 44, which abut against the end face of the outer sleeve 43. By providing shoulders 423, the guide sleeve 42 can be limited in the axial direction. When the upper limit sleeve 421 and the lower limit sleeve 422 are assembled into the outer sleeve 43, the shoulders 423 abut tightly against the end face of the outer sleeve 43 to limit the upper limit sleeve 421 from moving upward or the lower limit sleeve 422 from moving downward, thus preventing the guide groove 44 from shifting due to the axial movement of the guide sleeve 42. At the same time, the cooperation between the shoulders 423 and the end face of the outer sleeve 43 can help to position the assembly position of the upper limit sleeve 421 and the lower limit sleeve 422, ensuring that the first gap (i.e., the guide groove 44) formed between them is accurate in size and maintains a stable fit with the first short column 411 of the core column 41, providing a reliable guiding reference for the subsequent sliding and rotation of the core column 41.

[0045] Furthermore, see Figure 5The upper limit sleeve 421 and the lower limit sleeve 422 have annular grooves 424 on their peripheral walls. The annular groove 424 of the upper limit sleeve 421 is on the same horizontal plane as the first locking screw 431, and the annular groove 424 of the lower limit sleeve 422 is on the same horizontal plane as the second locking screw 432. When the locking screws are tightened to abut against the peripheral wall of the limit sleeve, the ends of the locking screws are precisely engaged in the corresponding annular grooves 424, forming a double constraint in both the circumferential and axial directions. This enhances the fixing stability of the limit sleeves by the locking screws and further restricts the axial displacement of the upper limit sleeve 421 and the lower limit sleeve 422, ensuring that the guide groove 44 formed between them always maintains the preset shape and positional accuracy, providing a stable trajectory constraint for the sliding of the first short column 411 on the core column 41.

[0046] In a preferred embodiment, see [reference] Figure 5 The inverted V-shaped groove 441 includes a sliding section 4411, a buffer section 4412, and a sliding section 4413 connected in sequence. The width of the sliding section 4411 gradually decreases in the upward direction, providing a progressive guide for the first short column 411 of the core column 41, allowing the first short column 411 to slide smoothly into the buffer section 4412. The buffer section 4412 extends vertically, providing a brief vertical movement space for the first short column 411, achieving a smooth transition of the sliding path. The width of the sliding section 4413 gradually decreases in the downward direction. The upper end of the sliding section 4411 is connected to the side wall of the buffer section 4412, and the upper end of the sliding section 4413 is connected to the lower end of the buffer section 4412, allowing the first short column 411 to naturally transition from the buffer section 4412 to the sliding section 4413 during downward sliding. In addition, the lower end of the sliding section 4413 of the first inverted V-groove 441 is joined with the lower end of the sliding section 4411 of the second inverted V-groove 441 to form a continuous closed guide path, ensuring that the first short column 411 can slide smoothly along the guide groove 44 during multiple locking-unlocking cycles, avoiding jamming or path interruption.

[0047] In a preferred embodiment, see [reference] Figure 1-4 The outer casing 43 has two symmetrically arranged rotating pins 433 on its peripheral wall; the mounting base 22 is a rectangular frame structure, and the locking assembly 4 is located inside the mounting base 22. The two rotating pins 433 are rotatably connected to the corresponding sides of the mounting base 22. The locking assembly 4 can swing freely around the axis of the rotating pins 433. When the lever 2 rotates around the support 1, the mounting base 22 swings synchronously with the lever 2. Under its own weight, the locking assembly 4 can always maintain an approximately vertical state, unaffected by the angular deviation caused by the swing of the lever 2. This ensures that the locking block 45 at the bottom of the core column 41 and the positioning groove 61 of the locking seat 6 are always in the same vertical direction, providing a stable spatial posture guarantee for the precise insertion or disengagement of the locking block 45 during locking and unlocking.

[0048] In a preferred embodiment, see [reference] Figure 2 The locking seat 6 includes a base 62, two symmetrically arranged legs 63 on the base 62, and a locking block 64 rotatably connected to the two legs 63. A positioning groove 61 is formed on the top of the locking block 64. The rotation center line of the locking block 64 and the legs 63, and the outer sleeve 43 are parallel to the rotation center line of the mounting seat 22. During actual operation, when the locking assembly 4 experiences angular sway due to motion inertia, the locking block 64 can adaptively rotate slightly according to the contact pressure of the locking block 45, thereby adjusting the angle and posture of the positioning groove 61 in real time to compensate for the alignment deviation between the locking block 45 and the positioning groove 61, ensuring that the contact surface between the bottom of the locking block 45 and the positioning groove 61 always remains stably fitted, further improving the smoothness and reliability of the locking action.

[0049] Further, see Figure 2 The top of the support leg 63 is provided with a limiting part 631 extending above the locking block 64, and a second gap 632 is provided between the limiting part 631 and the locking block 64. The second gap 632 is set to the maximum range within which the locking block 64 can achieve adaptive angle adjustment. When the locking block 64 rotates due to the contact pressure of the locking block 45, the limiting part 631 can form a rigid block when it swings to a preset angle, preventing the locking block 64 from excessively swaying due to inertia or excessive external force, and ensuring that its angle adjustment is always within a reasonable range. At the same time, since the locking assembly 4 is located in the mounting base 22 of the rectangular frame structure, a third gap is left between the peripheral wall of the locking assembly 4 and the inner side wall of the mounting base 22 on the swinging vertical plane. This third gap is used to limit the swing amplitude of the locking assembly 4. The coordinated constraint of the second gap 632 and the third gap ensures both the adaptive adjustment space of the locking block 64 and the locking component 4 and prevents them from deviating from the preset mating trajectory due to excessive swaying. This ensures that the locking block 45 is always aligned with the positioning groove 61 during the movement and successfully completes the embedding action.

[0050] In a preferred embodiment, see [reference] Figure 7 , 8 It also includes a lifting mechanism 7, which includes a fixed frame 71, a drive translation component 72, a lifting plate 73, and a lifting rod 74. The fixed frame 71 is slidably connected to a transmission rod 75, and the drive translation component 72 is connected to the transmission rod 75 to drive the transmission rod 75 to reciprocate. The lifting plate 73 is fixed on the transmission rod 75 and has an inclined groove 731. The lifting rod 74 has a second short column 741 that is slidably connected to the inclined groove 731. When the second short column 741 slides along the inclined groove 731, it drives the lifting rod 74 to reciprocate in a direction perpendicular to the movement of the transmission rod 75. The lifting rod 74 is used to push the lifting end 21 of the lever 2 upward.

[0051] Specifically, a fixed seat 91 is fixedly provided on the track 9 which is slidably connected to the trolley 8, and the lifting rod 74 is slidably connected to the fixed seat 91, and the sliding direction of the lifting rod 74 is perpendicular to the translation direction of the transmission rod 75.

[0052] When the drive translation component 72 drives the transmission rod 75 to translate along the fixed frame 71, the lifting plate 73 moves synchronously with the transmission rod 75. The inclined groove 731, through its sliding engagement with the second short column 741, converts the horizontal displacement of the transmission rod 75 into the vertical lifting motion of the lifting rod 74. That is, the inclined surface of the inclined groove 731 forces the second short column 741 to drive the lifting rod 74 to slide upward, so that the lifting rod 74 pushes the lifting end 21 of the lever 2 upward.

[0053] Specifically, multiple fixed frames 71 are provided, and the multiple fixed frames 71 are arranged at intervals along the moving path of the trolley 8; the transmission rod 75 extends along the moving path of the trolley 8, and the transmission rod 75 is slidably connected to the multiple fixed frames 71; a number of lifting plates 73 are spaced apart on the transmission rod 75; the lifting rod 74 includes a horizontal section 742 extending along the moving path of the trolley 8 and a number of vertical sections 743 located at the bottom of the horizontal section 742, each vertical section 743 being vertically slidably connected to the fixed seat 91, and a second short column 741 is located on the vertical section 743, with one second short column 741 corresponding to slide along an inclined groove 731. By providing multiple lifting plates 73, the stability of the lifting rod 74's lifting movement is ensured. Since the horizontal section 742 of the lifting rod 74 covers the entire travel distance of the trolley 8, when the drive translation component 72 drives the transmission rod 75 to translate, the inclined grooves 731 of the multiple lifting plates 73 and the second short columns 741 of the multiple vertical sections 743 slide in a one-to-one correspondence, allowing the horizontal section 742 of the lifting rod 74 to perform a smooth lifting and lowering motion. At this time, no matter where the trolley 8 is on the track 9, the horizontal section 742 of the lifting rod 74 can push the lifting end 21 of the lever 2 upward through the above transmission logic, ensuring that the lifting operation of the lever 2 can be stably completed throughout the entire operating range, effectively improving the adaptability and automation of the mechanism.

[0054] The aforementioned driving translation component 72 is implemented using existing technology, and its specific structure and working principle will not be described in detail here. Specifically, several mature transmission methods can be selected: First, an electric push rod, whose extended end is connected to the end of the transmission rod 75, directly driving the transmission rod 75 to reciprocate; Second, a combination structure of a rotary motor and a gear and rack transmission mechanism can be used, with the output shaft of the rotary motor connected to the input end of the gear and rack transmission mechanism, and the output end of the gear and rack transmission mechanism connected to the transmission rod 75. The rotary motor drives the gear to rotate, and the gear meshes with the rack to drive the rack to perform linear motion, thereby driving the transmission rod 75 to reciprocate; Third, a combination structure of a rotary motor, a gear transmission mechanism, and a ball screw transmission mechanism can also be used, with the output shaft of the rotary motor, the gear transmission mechanism, and the input end of the ball screw transmission mechanism connected in sequence, and the output end of the ball screw transmission mechanism connected to the transmission rod 75. The rotary motor drives the ball screw nut to rotate through the gear transmission mechanism, and the meshing transmission between the ball screw nut and the ball screw is converted into linear motion of the ball screw, thereby driving the transmission rod 75 to reciprocate. The above-mentioned existing technical solutions can all meet the smooth driving requirements of the transmission rod 75, and the appropriate model can be selected according to the load size, speed requirements and installation space in the actual working conditions.

[0055] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A lever-type locking mechanism, characterized in that, include: Support (1), on which a lever (2) is rotatably connected, one end of the lever (2) is provided with a lifting end (21), and the other end is provided with a mounting seat (22); The counterweight (3) is placed on the lever (2) and located between the lifting end (21) and the support (1); The locking assembly (4) includes a core column (41), a guide sleeve (42), and an outer sleeve (43) sequentially arranged from the inside out. The outer sleeve (43) is rotatably connected to the mounting base (22), and the rotation center line of the outer sleeve (43) and the mounting base (22) and the rotation center line of the support (1) and the lever (2) are parallel. The peripheral wall of the guide sleeve (42) is provided with a guide groove (44), which includes four sequentially spliced ​​inverted V-shaped grooves (441). The peripheral wall of the core column (41) is provided with several first short columns (411) that slide along the guide groove (44). The bottom of the core column (41) is provided with a locking block (45) with an inverted T-shaped structure. Locking seat (6) is located below the locking assembly (4), and its top is provided with a positioning groove (61) in the shape of an inverted T; When the first short post (411) slides along one of the inverted V-shaped grooves (441), it can drive the core post (41) to move up and down and rotate 90° around its own axis, so that the locking block (45) is locked in the positioning groove (61) or disengaged from the positioning groove (61).

2. The lever-type locking mechanism according to claim 1, characterized in that, The guide sleeve (42) includes an upper limit sleeve (421) and a lower limit sleeve (422). The guide groove (44) is formed by a first gap between the upper limit sleeve (421) and the lower limit sleeve (422). A plurality of first locking screws (431) and second locking screws (432) are screwed onto the outer sleeve (43). The first locking screws (431) abut against the peripheral wall of the upper limit sleeve (421). The second locking screws (432) abut against the peripheral wall of the lower limit sleeve (422).

3. The lever-type locking mechanism according to claim 2, characterized in that, The upper limit sleeve (421) and the lower limit sleeve (422) are both provided with a shoulder (423) at the ends away from the guide groove (44) that abuts against the end face of the outer sleeve (43).

4. The lever-type locking mechanism according to claim 2, characterized in that, The upper limit sleeve (421) and the lower limit sleeve (422) have annular grooves (424) on their peripheral walls. The annular groove (424) of the upper limit sleeve (421) is on the same horizontal plane as the first locking screw (431), and the annular groove (424) of the lower limit sleeve (422) is on the same horizontal plane as the second locking screw (432).

5. The lever-type locking mechanism according to claim 1, characterized in that, The inverted V-shaped groove (441) includes a sliding section (4411), a buffer section (4412), and a sliding section (4413) connected in sequence. The width of the sliding section (4411) gradually decreases in the upward direction, the buffer section (4412) extends in the vertical direction, and the width of the sliding section (4413) gradually decreases in the downward direction. The upper end of the sliding section (4411) is connected to the side wall of the buffer section (4412), and the upper end of the sliding section (4413) is connected to the lower end of the buffer section (4412).

6. The lever-type locking mechanism according to claim 1, characterized in that, The outer casing (43) has two symmetrically arranged rotating pins (433) on its periphery; the mounting base (22) is a rectangular frame structure, the locking component (4) is located inside the mounting base (22), and the two rotating pins (433) are rotatably connected to the corresponding sides of the mounting base (22).

7. The lever-type locking mechanism according to claim 1, characterized in that, The locking seat (6) includes a base (62), two symmetrically arranged legs (63) on the base (62), and a locking block (64) rotatably connected to the two legs (63). A positioning groove (61) is opened on the top of the locking block (64). The rotation center line of the locking block (64) and the legs (63) and the outer sleeve (43) are parallel to the rotation center line of the mounting seat (22).

8. The lever-type locking mechanism according to claim 7, characterized in that, The top of the support leg (63) is provided with a limiting part (631) extending above the locking block (64), and there is a second gap (632) between the limiting part (631) and the locking block (64).

9. The lever-type locking mechanism according to claim 1, characterized in that, It also includes a lifting mechanism (7), which includes a fixed frame (71), a drive translation component (72), a lifting plate (73), and a lifting rod (74); the fixed frame (71) is slidably connected to a transmission rod (75), and the drive translation component (72) is connected to the transmission rod (75) to drive the transmission rod (75) to reciprocate; the lifting plate (73) is fixed on the transmission rod (75), and an inclined groove (731) is provided on the lifting plate (73); the lifting rod (74) is provided with a second short column (741) slidably connected to the inclined groove (731); when the second short column (741) slides along the inclined groove (731), it drives the lifting rod (74) to reciprocate in a direction perpendicular to the movement of the transmission rod (75); the lifting rod (74) is used to push the lifting end (21) of the lever (2) upward.

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