Combined stud quick positioning and locking device

Abstract

The utility model relates to stud fast positioning technical field especially relates to a combined stud fast positioning locking device, including installation sleeve and the part to be locked, stud, be provided with the clamping mechanism for providing the supporting force from below to above in installation sleeve, install the down -pressing mechanism for providing the down -pressing force to the part to be locked in installation sleeve, and the down -pressing mechanism cooperation clamping mechanism carries out the up and down two point extrusion to the part to be locked. The utility model discloses through rotating circular extrusion and poking the traction rod, can drive six contact points of up and down simultaneously to complete preliminary fixation in a few seconds. And help to reduce operation step and time, effective realization fast positioning. Simultaneously makes the part to be locked fixed in the middle, and forms rigid connection with installation sleeve. Can effectively resist vibration and impact, prevent the part to be locked to sway or stud deviation when stud connection rotary connection, help to improve the stability of connection.

Description

Technical Field

[0001] This utility model relates to the field of stud quick positioning technology, and in particular to a combined stud quick positioning and locking device. Background Technology

[0002] Studs, as an important mechanical connector, are widely used in various equipment and structures. The reliability of their connection, assembly efficiency, and vibration and loosening resistance directly affect the safety and lifespan of the overall equipment.

[0003] Existing technologies often employ combined studs, such as those disclosed in CN201121630Y, which typically include components like a positioning nut, a long threaded rod, a connecting rod, and a screw, achieving connection through threaded engagement. While this type of structure improves connection stability and detachability to some extent, it still suffers from the following drawbacks: First, traditional studs require multiple adjustments to the alignment position during installation, making the process cumbersome and hindering rapid positioning, especially in space-constrained or batch assembly scenarios where efficiency is low. Second, relying solely on thread friction and planar clamping for loosening makes them prone to loosening under vibration or impact, leading to connection failure. Third, the clamping force is concentrated in the contact area between the screw head and the washer, easily causing localized stress concentration and affecting the lifespan of the connected components. Fourth, multiple tightening operations using tools are required, and an effective mechanical locking mechanism is lacking, relying on manual experience to ensure preload. Utility Model Content

[0004] The purpose of this invention is to solve the problems of low positioning efficiency, cumbersome operation, poor vibration resistance and loosening prevention, and uneven stress distribution in the existing technology, and to propose a combined stud quick positioning and locking device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A combined stud quick positioning and locking device includes an installation sleeve, a part to be locked, and a stud. The installation sleeve is provided with a clamping mechanism for providing support force from bottom to top. The installation sleeve is also provided with a pressing mechanism for providing downward pressure to the part to be locked. The pressing mechanism works in conjunction with the clamping mechanism to squeeze the part to be locked from both the top and bottom.

[0007] Preferably, the pressing mechanism is symmetrically arranged in two sets, and the clamping mechanism is arranged circumferentially in four sets. The part to be locked is located below the mounting sleeve, the stud is located in the middle of the mounting sleeve, and the fixed part to be locked forms a rigid connection with the mounting sleeve.

[0008] Preferably, the clamping mechanism includes a limiting base fixedly installed at the bottom center of the mounting sleeve, four L-shaped rods movably mounted circumferentially on the mounting sleeve, and a circular extrusion plate threadedly installed at the top center of the mounting sleeve to provide support for pulling the L-shaped rods and locking the parts to be locked.

[0009] Preferably, the mounting sleeve has four rectangular through holes at the beginning of its circumference. A traction connecting rod is installed in the rectangular through holes by a pin. The traction connecting rod is connected to the top of the vertical rod of the L-shaped rod by a pin. A pressure rod for pressing down the traction connecting rod is fixedly installed at the bottom of the circular extrusion plate. Both the bottom end of the traction connecting rod and the pressure rod are wedge-shaped.

[0010] Preferably, the pressing mechanism includes two symmetrically formed cavities on the mounting sleeve, a traction turntable is rotatably installed in the cavity, the traction turntable movably pulls a pressure plate for pressing down the part to be locked, the outer wall of the mounting sleeve has a vertical hole communicating with the cavity, and a traction rod is fixedly installed on the side wall of the traction turntable.

[0011] Preferably, a recessed block is fixedly installed on the outer wall of the mounting sleeve, a wedge-head limiting rod is movably installed through the top of the recessed block, a strong spring is fixedly installed between the wedge-head limiting rod and the inner wall of the recessed block, a first connecting rod is connected to the traction turntable pin, a second connecting rod is connected to the bottom pin of the first connecting rod, a transmission rod for traction pressure plate is installed on the bottom pin of the second connecting rod, and a rectangular sliding hole is opened on the bottom wall of the cavity for sliding the transmission rod.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model achieves initial fixing within seconds by simultaneously driving six contact points (upper and lower) through rotating a circular pressing and actuating traction rod. This helps reduce operation steps and time, effectively achieving rapid positioning. Simultaneously, it fixes the part to be locked in the center, forming a rigid connection with the mounting sleeve. This effectively resists vibration and impact, preventing the part to be locked from shaking or the stud from shifting during the rotational connection, thus improving connection stability.

[0014] 2. This utility model provides support through four circumferentially distributed L-shaped rods and downward pressure through two symmetrical pressure plates, allowing the load to be evenly distributed over a larger area of ​​the parts to be locked. This avoids stress concentration, effectively protects the connection between the parts to be locked and the studs themselves, and helps reduce replacement costs. At the same time, the wedge-shaped limiting rod locks the traction rod, effectively preventing it from accidentally rotating back to its original position due to vibration, thereby mechanically locking the downward pressure and improving its anti-loosening effect. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of a combined stud quick positioning and locking device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the clamping mechanism of a combined stud quick positioning and locking device proposed in this utility model;

[0017] Figure 3 This is a side view of the mounting sleeve of a combined stud quick positioning and locking device proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the pressing mechanism of a combined stud quick positioning and locking device proposed in this utility model.

[0019] In the diagram: 1. Mounting sleeve; 2. Stud; 3. Part to be locked; 4. Clamping mechanism; 41. Limiting base; 42. Circular extrusion plate; 43. Rectangular through hole; 44. Traction link; 45. L-shaped rod; 46. Pressure rod; 5. Pressing mechanism; 51. Traction rod; 52. Vertical hole; 53. Cavity; 54. Traction turntable; 55. First link; 56. Second link; 57. Rectangular sliding hole; 58. Transmission rod; 59. Pressure plate; 510. Concave block; 511. Wedge head limiting rod; 512. Strong spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-4 A combined stud quick positioning and locking device includes an installation sleeve 1, a part to be locked 3, and a stud 2. The installation sleeve 1 is provided with a clamping mechanism 4 for providing support force from bottom to top. The clamping mechanism 4 includes a limit base 41 fixedly installed at the bottom center of the installation sleeve 1. The limit base 41 is a limit nut for limiting the rotation of the stud 2. Four L-shaped rods 45 are movably installed circumferentially on the installation sleeve 1. A circular extrusion plate 42 for pulling the L-shaped rods 45 to provide support force to the part to be locked 3 is threaded on the top of the middle part of the installation sleeve 1. The circular extrusion plate 42 has a circular through hole in the middle for sliding connection of the stud 2.

[0022] The welded connection between the limiting base 41 and the mounting sleeve 1 provides a reference positioning for the entire device, and its relative positional relationship with the stud 2 ensures the axial alignment of the part 3 to be locked during installation.

[0023] The circular extrusion plate 42 is connected to the top of the mounting sleeve 1 by a precision thread. The thread helix angle design ensures stable axial downward displacement during clockwise rotation. This amplifies the force and maintains the downward pressure state through the thread's self-locking characteristic, preventing loosening due to vibration.

[0024] The mounting sleeve has four rectangular through holes 43 starting from the circumference. A traction rod 44 is installed in the rectangular through holes 43 with a pin. The traction rod 44 is connected to the top of the vertical rod of the L-shaped rod 45 with a pin. A pressure rod 46 for pressing down the traction rod 44 is fixedly installed at the bottom of the circular extrusion plate 42. Both the bottom of the traction rod 44 and the pressure rod 46 are wedge-shaped at the bottom.

[0025] The pin connection between the traction link 44 and the L-shaped rod 45 enables motion transmission, allowing the L-shaped rod 45 to move in an arc around its own hinge point. The synchronous retraction of the four L-shaped rods 45 forms a ring-shaped connection around the parts. It should be noted that the L-shaped rod 45 and the mounting sleeve 1 can be connected by a link, and the hinge points at both ends of the link are located at the middle of the vertical rod and the bottom of the mounting sleeve 1, respectively, forming a force-saving lever structure. By increasing the lever arm, the torque required for operation is reduced.

[0026] The mounting sleeve 1 is equipped with a pressing mechanism 5 that provides downward pressure to the part 3 to be locked. The pressing mechanism 5 includes two symmetrically arranged cavities 53 on the mounting sleeve 1. A traction turntable 54 is rotatably mounted in each cavity 53. The traction turntable 54 movably pulls a pressure plate 59 for pressing down the part 3 to be locked. A vertical hole 52 communicating with the cavity 53 is opened on the outer wall of the mounting sleeve 1. A traction rod 51 is fixedly mounted on the side wall of the traction turntable 54. The traction rod 51 is welded to the traction turntable 54 to ensure lossless transmission of traction force. The rotational connection between the traction turntable 54 and the cavity 53 is made of bearings to reduce the coefficient of rotational friction, making operation easier and ensuring the stability of the rotation axis.

[0027] A recessed block 510 is fixedly installed on the outer wall of the mounting sleeve 1. A wedge head limiting rod 511 is movably installed through the top of the recessed block 510. A strong spring 512 is fixedly installed on the wedge head limiting rod 511 and the inner wall of the recessed block 510. A first connecting rod 55 is connected to the traction turntable 54 by a pin. A second connecting rod 56 is connected to the bottom of the first connecting rod 55 by a pin. A transmission rod 58 for traction pressure plate 59 is installed on the bottom of the second connecting rod 56 by a pin. A rectangular sliding hole 57 for sliding the transmission rod 58 is opened on the bottom wall of the cavity 53.

[0028] The transmission rod 58 and the rectangular sliding hole 57 form a clearance fit sliding connection. The rectangular structure restricts the rotational freedom of the transmission rod 58, ensuring that it can only move axially. The connection between the transmission rod 58 and the pressure plate 59 is rigidly welded, ensuring that the downward pressure is directly transmitted to the top surface of the part. The contact end between the pressure plate 59 and the part adopts an elastic pad design, which not only avoids damage to the part 3 to be locked by hard contact, but also increases the contact area through elastic deformation.

[0029] The pressing mechanism 5, together with the clamping mechanism 4, applies pressure from both the top and bottom points to the locking part 3.

[0030] Two sets of pressing mechanisms 5 are symmetrically arranged, and four sets of clamping mechanisms 4 are arranged circumferentially. The part to be locked 3 is located below the mounting sleeve 1, and the stud 2 is located in the middle of the mounting sleeve 1. The fixed part to be locked 3 and the mounting sleeve 1 form a rigid connection.

[0031] It should be noted that the specific model and specifications of the stud 2 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0032] The functional principle of this utility model can be explained through the following operation methods:

[0033] When it is necessary to lock part 3 to be locked:

[0034] First, the operator places the part 3 to be locked at the top of the L-shaped rod 45 below the mounting sleeve 1, aligning the screw hole therewith with the stud 2, to provide preliminary axial positioning for the part 3 to be locked.

[0035] Subsequently, the operator rotates the circular pressing plate 42, which is threaded onto the top of the mounting sleeve 1, clockwise. The circular pressing plate 42 moves downward, causing the pressure rod 46, which is fixedly mounted at its bottom, to press down. The wedge-shaped bottom end of the pressure rod 46 then presses against the wedge-shaped end of the traction rod 44, which is in contact with it. Since the traction rod 44 is movably mounted in the rectangular through hole 43 of the mounting sleeve 1 via a pin, it rotates downward inside. The upper end of the traction rod 44 is connected to the top of the vertical rod of the L-shaped rod 45 via a pin, thereby pulling the four circumferentially distributed L-shaped rods 45 to converge synchronously towards the central axis of the mounting sleeve 1 with their hinge point with the mounting sleeve 1 as the center, supporting and holding the part 3 to be locked from below, completing the initial support and positioning.

[0036] Next, the operator pulls down the traction rod 51 installed on the outer wall of the mounting sleeve 1. The traction rod 51 drives the traction turntable 54, which is fixed to it, to rotate within the cavity 53. The traction turntable 54 converts the rotational motion into linear motion through a linkage mechanism consisting of the first link 55 and the second link 56, ultimately driving the transmission rod 58, which is pin-connected to the second link 56, to slide downward within the rectangular sliding hole 57. The transmission rod 58 then pushes the pressure plate 59 downward, thereby pressing the top surface of the part 3 to be locked from above.

[0037] Finally, after the pressure plate 59 presses the part, the traction rod 51 squeezes the wedge head limiting rod 511 into the groove of the concave block 510. The wedge head limiting rod 511, which is pressed by the strong spring 512, is released to limit the traction rod 51, preventing it from reversing due to vibration, thereby ensuring the long-term stability of the downward pressure.

[0038] Finally, the two holes of the mounting sleeve 1 and the part to be locked 3 are aligned to ensure that the stud 2 rotates and locks smoothly without shaking when it is limited by the limit 41 of the first limit base.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A combined stud quick positioning and locking device, comprising an installation sleeve (1), a part to be locked (3), and a stud (2), characterized in that, The mounting sleeve (1) is provided with a clamping mechanism (4) for providing support force from bottom to top. The mounting sleeve (1) is also provided with a pressing mechanism (5) for providing downward pressure to the locking part (3). The pressing mechanism (5) works with the clamping mechanism (4) to press the locking part (3) from both the top and bottom.

2. The combined stud quick positioning and locking device according to claim 1, characterized in that, The pressing mechanism (5) is symmetrically arranged in two sets, and the clamping mechanism (4) is arranged in four sets around the circumference. The part to be locked (3) is located below the mounting sleeve (1), and the stud (2) is located in the middle of the mounting sleeve (1). The fixed part to be locked (3) and the mounting sleeve (1) form a rigid connection.

3. The combined stud quick positioning and locking device according to claim 2, characterized in that, The clamping mechanism (4) includes a limiting base (41) fixedly installed at the bottom center of the mounting sleeve (1). The mounting sleeve (1) is movably mounted with four L-shaped rods (45) in the circumference. The top of the middle part of the mounting sleeve (1) is threaded with a circular extrusion plate (42) for pulling the L-shaped rods (45) to provide support for the locking part (3).

4. The combined stud quick positioning and locking device according to claim 3, characterized in that, The mounting sleeve (1) has four rectangular through holes (43) starting from the circumference. A traction rod (44) is installed in the rectangular through holes (43) by a pin. The traction rod (44) is connected to the top of the vertical rod of the L-shaped rod (45) by a pin. A pressure rod (46) for pressing down the traction rod (44) is fixedly installed at the bottom of the circular extrusion plate (42). Both the bottom of the traction rod (44) and the pressure rod (46) are wedge-shaped.

5. The combined stud quick positioning and locking device according to claim 1, characterized in that, The pressing mechanism (5) includes two cavities (53) symmetrically opened on the mounting sleeve (1). A traction turntable (54) is rotatably installed in the cavity (53). The traction turntable (54) movably pulls a pressure plate (59) for pressing down the part (3) to be locked. A vertical hole (52) communicating with the cavity (53) is opened on the outer wall of the mounting sleeve (1). A traction rod (51) is fixedly installed on the side wall of the traction turntable (54).

6. The combined stud quick positioning and locking device according to claim 5, characterized in that, The outer wall of the mounting sleeve (1) is fixedly mounted with a recess (510), and a wedge head limiting rod (511) is movably installed through the top of the recess (510). A strong spring (512) is fixedly installed between the wedge head limiting rod (511) and the inner wall of the recess (510). The traction turntable (54) is pin-connected to a first connecting rod (55), and the bottom pin of the first connecting rod (55) is pin-connected to a second connecting rod (56). The bottom pin of the second connecting rod (56) is mounted with a transmission rod (58) for traction pressure plate (59). The bottom wall of the cavity (53) is provided with a rectangular sliding hole (57) for sliding the transmission rod (58).

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