License plate recognition all-in-one machine cantilever connecting structure

Abstract

A license plate recognition all-in-one machine cantilever connecting structure belongs to the license plate recognition all-in-one machine cantilever technical field, including the drive shaft of license plate recognition all-in-one machine, the outer surface of drive shaft is fixedly installed with fixed disc, the side of fixed disc away from license plate recognition all-in-one machine is fixedly installed with connecting rod in circumference, the outer surface of drive shaft is equipped with the adjustable length's cantilever, the outer surface of cantilever is opened with four through holes in circumference equidistantly, connecting rod penetrates corresponding through hole, four connecting rods are equipped with chuck installation between, the fixed device is arranged between chuck and connecting rod, after the locking of fixed device, cantilever is clamped and fixedly installed between fixed disc and chuck, the utility model can strengthen the fixed relation of connecting rod and chuck, eliminate the displacement of component under long-term vibration, ensure that connecting structure is long-term stable, and improve cantilever connecting stability and anti-vibration ability.

Description

Technical Field

[0001] This utility model relates to the field of cantilever technology for license plate recognition integrated machines, and specifically to a cantilever connection structure for a license plate recognition integrated machine. Background Technology

[0002] License plate recognition integrated machines are used in scenarios such as parking lot entrances and exits, highway toll stations, and municipal road checkpoints. These machines need to be fixed to a bracket or column via a cantilever assembly. The installation position and cantilever extension length must be flexibly adjusted according to the requirements of the lane width and recognition distance, while ensuring the stability of the connection structure during long-term use. The existing cantilever connection structure of license plate recognition integrated machines has the following technical defects: Insufficient connection stability: Most cantilever arms use a single bolt fixing or a simple sleeve connection structure. Long-term vibration can easily cause bolt loosening and sleeve displacement, resulting in the all-in-one camera lens deviating from the preset recognition angle, requiring frequent maintenance and calibration. Inconvenient length adjustment: Some adjustable cantilever arms require the removal of multiple fasteners to adjust the length, which is cumbersome and the locking reliability after adjustment is poor, making it difficult to adapt to the recognition distance requirements in different scenarios; Low disassembly and assembly efficiency: The connection structure often relies on multiple sets of tools for installation (such as Allen wrenches, torque wrenches, etc.), which takes a long time to install or replace faulty equipment, increasing on-site construction costs. Poor component fit accuracy: The connection between the cantilever and the drive shaft lacks a positioning structure, which can easily lead to coaxiality deviation during assembly, resulting in poor cantilever rotation and affecting the angle adjustment function of the integrated machine. The aforementioned defects make it difficult for existing cantilever connection structures to meet the high-efficiency operation requirements of intelligent transportation scenarios in terms of practicality, reliability, and ease of maintenance. Therefore, there is an urgent need for a cantilever connection structure that is stable, flexible in adjustment, and easy to assemble and disassemble. Utility Model Content

[0003] The purpose of this utility model is to provide a cantilever connection structure for a license plate recognition integrated machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A cantilever connection structure for a license plate recognition integrated machine includes a drive shaft of the license plate recognition integrated machine. A fixed plate is fixedly installed on the outer surface of the drive shaft. A connecting rod is circumferentially fixedly installed on the side of the fixed plate opposite to the license plate recognition integrated machine. An adjustable-length cantilever is sleeved on the outer surface of the drive shaft. Four through holes are circumferentially and equidistantly opened on the outer surface of the cantilever. The connecting rod passes through the corresponding through holes. A clamping plate is sleeved between the four connecting rods. A fixing device is provided between the clamping plate and the connecting rod. After the fixing device is locked, the cantilever is clamped and fixedly installed between the fixed plate and the clamping plate.

[0005] Preferably, the drive shaft has an insert groove on the side near the chuck, and a locking block is fixedly installed on the rear surface of the chuck, the locking block being inserted into the insert groove.

[0006] Preferably, the outer surface block of the connecting rod has a positioning hole, and an internally threaded rod is fixedly installed on the side of the clamp away from the clamping block. The fixing device includes a locking ring, which is sleeved on the outer surface of the internally threaded rod. Four arc-shaped rods are fixedly installed circumferentially and at equal intervals on the outer surface of the locking ring. The arc-shaped rods are inserted into the corresponding positioning holes. A locking plate is screwed onto the side of the internally threaded rod away from the clamping block. A threaded part is fixedly installed on the side of the locking plate near the internally threaded rod. The threaded part is screwed into the internally threaded rod.

[0007] Preferably, an operating block is fixedly installed on the side of the locking disc opposite to the screw connection.

[0008] Preferably, the cantilever includes an outer arm, the right end of which is clamped between the clamping plate and the fixing plate, and an inner arm is inserted into the outer arm, with a locking device installed between the inner arm and the outer arm.

[0009] Preferably, the inner arm is U-shaped, and multiple adjustment holes are equidistantly provided on the inner sidewall of the inner arm. The locking device includes a U-shaped block, which is fixedly installed at the left end opening of the outer arm. The U-shaped block has mounting grooves that pass through it. Each mounting groove is equipped with a cross-shaped positioning pin. A spring is fixedly installed between the cross-shaped positioning pin and the corresponding mounting groove. The opposing ends of the two cross-shaped positioning pins are respectively inserted into the corresponding adjustment holes. The opposite ends of the two cross-shaped positioning pins are provided with arc-shaped portions. A threaded rod is threaded through the outer surface of the U-shaped block. A torsion block is fixedly installed at the left end of the threaded rod, and a conical block is fixedly installed at the right end of the threaded rod. The outer surface of the conical block fits against the arc-shaped part of the cross-shaped locating pin.

[0010] Preferably, a baffle is fixedly installed on the outer surface of the conical block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs a combination of a fixed plate and a clamping plate to form a two-way clamping structure. After the connecting rod is fitted through the perforation, the cantilever is clamped and fixed between the fixed plate and the clamping plate, forming multi-point positioning support to avoid loosening caused by single-point force. The drive shaft's mounting groove and the clamping plate's locking block engage to restrict the clamping plate's circumferential rotation. At the same time, the positioning hole of the connecting rod engages with the arc-shaped rod of the locking ring, further strengthening the fixed relationship between the connecting rod and the clamping plate and preventing component displacement under long-term vibration. Meanwhile, the locking plate is screwed and locked to the internal threaded rod through the threaded part, which, together with the positioning effect of the arc-shaped rod, forms a dual fixation of mechanical positioning and threaded locking, ensuring the long-term stability of the connection structure and improving the cantilever connection stability and vibration resistance.

[0012] By employing an interlocking structure between the outer and inner walls of the cantilever arm, and featuring multiple adjustment holes on the inner wall, the extension length can be flexibly adjusted according to site requirements, adapting to different lane widths and recognition distance scenarios. Furthermore, the locking device achieves initial positioning through the insertion of a cross-shaped locating pin into the adjustment hole. Combined with the wedge-shaped clamping action of the conical block, rotating the torsion block drives the threaded rod to advance the conical block, utilizing its arc-shaped portion to compress the cross-shaped locating pin, causing it to tightly engage with the adjustment hole for fixation. This achieves locking without disassembling any parts, making adjustment more convenient and increasing efficiency during actual construction, installation, or dismantling. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention.

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 4 This is a schematic diagram of the locking disc structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the locking ring structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the inner rod structure of this utility model.

[0019] Figure 7 This is a schematic diagram of the U-shaped block structure of this utility model.

[0020] Figure 8 This is a schematic diagram of the cross-sectional structure of the U-shaped block of this utility model.

[0021] In the diagram: 1. Drive shaft; 11. Mounting groove; 2. Fixed plate; 21. Connecting rod; 22. Positioning hole; 3. Cantilever; 31. Outer arm; 32. Inner arm; 321. Adjustment hole; 4. Clamping plate; 41. Locking block; 42. Internal threaded rod; 43. Locking ring; 431. Arc rod; 5. Locking plate; 51. Threaded connection; 6. Locking device; 61. U-shaped block; 611. Mounting groove; 62. Cross-shaped positioning pin; 63. Spring; 64. Threaded rod; 641. Torsion block; 65. Conical block; 66. Stop plate. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figures 1-8 This utility model provides a technical solution: A cantilever connection structure for a license plate recognition integrated machine includes a drive shaft 1 of the license plate recognition integrated machine. A fixing plate 2 is fixedly installed on the outer surface of the drive shaft 1. A connecting rod 21 is fixedly installed circumferentially on the side of the fixing plate 2 opposite to the license plate recognition integrated machine. An adjustable length cantilever 3 is sleeved on the outer surface of the drive shaft 1. Four through holes are circumferentially and equidistantly opened on the outer surface of the cantilever 3. The connecting rod 21 passes through the corresponding through holes. A clamping plate 4 is sleeved between the four connecting rods 21. A fixing device is provided between the clamping plate 4 and the connecting rods 21. After the fixing device is locked, the cantilever 3 is clamped and fixedly installed between the fixing plate 2 and the clamping plate 4.

[0024] A two-way clamping system is formed by "fixed plate 2 + clamping plate 4 + four sets of circumferential connecting rods 21". On the one hand, the circumferentially equidistant connecting rods 21 and the through holes are precisely matched to avoid coaxiality deviation when the cantilever 3 and the drive shaft 1 are assembled. On the other hand, after the fixing device is locked, the cantilever 3 is clamped between the two plates to form multi-point positioning support, which replaces the existing single bolt fixing or simple sleeve structure. It can effectively resist the loosening and displacement caused by vehicle vibration and wind load, and at the same time lay the foundation for subsequent disassembly and assembly simplification.

[0025] Combination Figure 2 and Figure 3 As shown, the drive shaft 1 has an insert groove 11 on the side near the chuck 4, and a locking block 41 is fixedly installed on the rear surface of the chuck 4. The locking block 41 is inserted into the insert groove 11.

[0026] During assembly, the clamp 41 can serve as a positioning reference to quickly align the relative positions of the clamp 4 and the drive shaft 1, thereby improving assembly efficiency and solving the problem of "no positioning reference and assembly accuracy relying on manual labor" in the existing structure.

[0027] Combination Figure 2 and Figure 3As shown, the outer surface of the connecting rod 21 has a positioning hole 22. The side of the clamp 4 away from the locking block 41 is fixedly installed with an internal thread rod 42. The fixing device includes a locking ring 43, which is sleeved on the outer surface of the internal thread rod 42. Four arc-shaped rods 431 are fixedly installed circumferentially and at equal intervals on the outer surface of the locking ring 43. The arc-shaped rods 431 are inserted into the corresponding positioning holes 22. A locking plate 5 is screwed onto the side of the internal thread rod 42 away from the clamp 4. A screwed part 51 is fixedly installed on the side of the locking plate 5 near the internal thread rod 42. The screwed part 51 is screwed into the internal thread rod 42.

[0028] The fixing device achieves dual fixation through "arc rod positioning + threaded locking": the arc rod 431 is inserted into the positioning hole 22 to first complete the mechanical positioning of the connecting rod 21 and the clamping plate 4, preventing relative sliding between the two; then, the locking ring 43 is pressed and fixed by the screwed part 51 of the locking plate 5 and the internal thread rod 42, forming a dual guarantee of "mechanical limit + threaded locking"; at the same time, this structure does not require multiple sets of tools, and only the locking plate 5 needs to be operated to complete the fixation, solving the problem of "disassembly and assembly relying on multiple tools and low efficiency". Moreover, the arc rod 431 is circumferentially distributed, which can ensure that the clamping plate 4 is subjected to uniform force and avoid component deformation caused by local stress.

[0029] Combination Figure 2 and Figure 4 As shown, an operating block is fixedly installed on the side of the locking disc 5 away from the screw connection part 51. The design of the operating block eliminates the need for special tools such as Allen wrenches and torque wrenches. Workers can directly rotate the operating block manually or with a regular wrench to complete the tightening and loosening operation of the locking disc 5, reducing the reliance on special tools on site and improving installation efficiency. Combination Figure 1 and Figure 6 As shown, the cantilever 3 includes an outer arm 31, the right end of which is clamped between the clamping plate 4 and the fixed plate 2, and an inner arm 32 is inserted into the outer arm 31. A locking device 6 is installed between the inner arm 32 and the outer arm.

[0030] By inserting and removing the inner arm 32 within the outer arm 31, the overall extension length of the cantilever can be flexibly adjusted to accommodate lane widths of 2-5 meters and recognition distances of 1-3 meters, without disassembling the connection between the cantilever and drive shaft 1 during the adjustment process. Simultaneously, the nested structure of the inner and outer arms ensures the overall support strength of the cantilever, preventing structural weaknesses after adjustment and meeting the load-bearing requirements of long-term suspension use of the integrated unit.

[0031] Combination Figure 6 and Figure 8As shown, the inner arm 32 is U-shaped, and multiple adjustment holes 321 are equidistantly provided on the inner side wall of the inner arm 32. The locking device 6 includes a U-shaped block 61, which is fixedly installed at the left end opening of the outer arm 31. The U-shaped block 61 has a through-hole mounting groove 611, and a cross-shaped positioning pin 62 is installed in each mounting groove 611. A spring 63 is fixedly installed between the cross-shaped positioning pin 62 and the corresponding mounting groove 611. The opposing ends of the two cross-shaped positioning pins 62 are respectively inserted into the corresponding adjustment holes 321. The opposite ends of the two cross-shaped positioning pins 62 are provided with arc-shaped parts. A threaded rod 64 is threaded through and screwed onto the outer surface of the U-shaped block 61. A torsion block 641 is fixedly installed on the left end of the threaded rod 64, and a conical block 65 is fixedly installed on the right end of the threaded rod 64. The outer surface of the conical block 65 fits against the arc-shaped part of the cross-shaped positioning pin 62.

[0032] The multiple adjustment holes 321 of the inner arm 32 form a multi-level adjustment, which can adapt to the length requirements of different scenarios. The spring 63 pushes the cross-shaped positioning pin 62 to always fit with the adjustment hole 321 to achieve initial positioning and prevent the inner arm 32 from slipping during the adjustment process. Rotating the torsion block 641 can drive the conical block 65 to advance, and the arc part squeezes the cross-shaped positioning pin 62 to make the cross-shaped positioning pin 62 tightly locked into the adjustment hole 321. Locking can be completed without disassembling the U-shaped block 61, so that the length of the cantilever 3 can be quickly adjusted.

[0033] Combination Figure 7 or Figure 8 As shown, a baffle 66 is fixedly installed on the outer surface of the conical block 65. The baffle 66 can limit the maximum advancing distance of the conical block 65 and prevent the conical block 65 from being squeezed too tightly due to excessive rotation of the torsion block 641. This prevents the cross-shaped positioning pin 62 or the spring 63 from being damaged due to overload (extending the service life of the locking device) and also prevents the inner arm 32 from being deformed due to excessive clamping (ensuring adjustment flexibility). This forms a "controllable locking force" protection mechanism, solving the potential defects of existing "no overload protection and easily damaged parts".

[0034] Assembly principle: First, the outer arm 31 is pre-positioned and pre-assembled: the right end of the outer arm 31 is first fitted onto the outer surface of the drive shaft 1, so that the circumferential connecting rod 21 on the fixed plate 2 passes through the corresponding through hole of the outer arm 31, thus completing the initial positioning of the cantilever 31 and the drive shaft 1. Then, the clamping plate 4 is fitted onto the four connecting rods 21, and at the same time, the clamping block 41 of the clamping plate 4 is inserted into the mounting groove 11 of the drive shaft 1 to restrict the circumferential rotation of the clamping plate 4, thus forming an assembly reference.

[0035] Subsequently, the locking ring 43 of the fixing device is sleeved onto the internal thread rod 42 of the clamping plate 4 and rotated so that the arc-shaped rod 431 of the locking ring 43 is inserted into the positioning hole 22 of the connecting rod 21, thus completing the mechanical positioning of the connecting rod 21 and the clamping plate 4. Then, by screwing the screwed part 51 of the locking disc 5 to the internal threaded rod 42, the operating block of the locking disc 5 is rotated to press the locking ring 43, so that the cantilever 3 is firmly clamped between the fixed disc 2 and the clamping disc 4, realizing a stable connection between the cantilever and the drive shaft, resisting vibration and wind displacement.

[0036] Then, the locking device 6 is fixedly installed at the left end opening of the outer arm 31 using bolts. After assembly, the left end opening of the outer arm 31 leaves space for the insertion of the inner arm 32. Then, the inner arm 32 is inserted into the outer arm 31. The inner arm 32 can be inserted and removed along the inner cavity of the outer arm 31 to adjust the length. Before adjustment, the screw block 641 of the locking device 6 is rotated to drive the threaded rod 64 to move backward, so that the conical block 65 is disengaged from the arc-shaped part of the cross-shaped positioning pin 62. Under the reset action of the spring 63, the cross-shaped positioning pin 62 is slightly retracted into the mounting groove 611, releasing the locking of the inner arm 32.

[0037] Based on the lane width and recognition distance requirements, pull the inner arm 32 to the appropriate position, align a set of adjustment holes 321 of the inner arm 32 with the cross-shaped positioning pin 62, rotate the torsion block 641 in the opposite direction, and push the cone block 65 to move the cross-shaped positioning pin 62 upward, so that it is locked into the adjustment hole 321, thus achieving reliable locking between the inner arm 32 and the outer arm 31. At this point, the installation of the cantilever 3 is complete.

Claims

1. A cantilever connection structure for a license plate recognition integrated machine, characterized in that, The device includes a drive shaft (1) for a license plate recognition integrated machine. A fixed plate (2) is fixedly installed on the outer surface of the drive shaft (1). A connecting rod (21) is fixedly installed circumferentially on the side of the fixed plate (2) away from the license plate recognition integrated machine. An adjustable length cantilever (3) is sleeved on the outer surface of the drive shaft (1). Four through holes are circumferentially equidistantly opened on the outer surface of the cantilever (3). The connecting rod (21) passes through the corresponding through holes. A clamping plate (4) is sleeved between the four connecting rods (21). A fixing device is provided between the clamping plate (4) and the connecting rod (21). After the fixing device is locked, the cantilever (3) is clamped and fixedly installed between the fixed plate (2) and the clamping plate (4).

2. The cantilever connection structure for a license plate recognition integrated machine according to claim 1, characterized in that: The drive shaft (1) has an insert groove (11) on one side near the chuck (4), and a locking block (41) is fixedly installed on the rear surface of the chuck (4). The locking block (41) is inserted into the insert groove (11).

3. The cantilever connection structure for a license plate recognition integrated machine according to claim 2, characterized in that: The outer surface of the connecting rod (21) is provided with a positioning hole (22). The chuck (4) is fixedly installed with an internal thread rod (42) on the side away from the clamp block (41). The fixing device includes a locking ring (43). The locking ring (43) is sleeved on the outer surface of the internal thread rod (42). Four arc-shaped rods (431) are fixedly installed circumferentially at equal intervals on the outer surface of the locking ring (43). The arc-shaped rods (431) are inserted into the corresponding positioning holes (22). A locking plate (5) is screwed onto the side of the internal thread rod (42) away from the chuck (4). A screwed part (51) is fixedly installed on the side of the locking plate (5) close to the internal thread rod (42). The screwed part (51) is screwed into the internal thread rod (42).

4. The cantilever connection structure for a license plate recognition integrated machine according to claim 3, characterized in that: An operating block is fixedly installed on the side of the locking disc (5) away from the screw connection (51).

5. The cantilever connection structure for a license plate recognition integrated machine according to claim 1, characterized in that: The cantilever (3) includes an outer arm (31), the right end of which is clamped between the clamping plate (4) and the fixing plate (2), and an inner arm (32) is inserted into the outer arm (31), and a locking device (6) is installed between the inner arm (32) and the outer arm.

6. The cantilever connection structure for a license plate recognition integrated machine according to claim 5, characterized in that: The inner arm (32) is U-shaped, and multiple adjustment holes (321) are equidistantly provided on the inner sidewall of the inner arm (32). The locking device (6) includes a U-shaped block (61). The U-shaped block (61) is fixedly installed at the left end opening of the outer arm (31). The U-shaped block (61) has a mounting groove (611) that runs through it. Each mounting groove (611) is equipped with a cross-shaped positioning pin (62). A spring (63) is fixedly installed between the cross-shaped positioning pin (62) and the corresponding mounting groove (611). The opposing ends of the two cross-shaped positioning pins (62) are respectively inserted into the corresponding adjustment holes (321). The opposite ends of the two cross-shaped positioning pins (62) are provided with arc-shaped parts. A threaded rod (64) is threaded through the outer surface of the U-shaped block (61). A torsion block (641) is fixedly installed at the left end of the threaded rod (64), and a conical block (65) is fixedly installed at the right end of the threaded rod (64). The outer surface of the conical block (65) fits against the arc-shaped part of the cross-shaped locating pin (62).

7. The cantilever connection structure for a license plate recognition integrated machine according to claim 6, characterized in that: A baffle (66) is fixedly installed on the outer surface of the conical block (65).

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