Forklift steering axle

Abstract

The utility model relates to the technical field of steering, in particular to a forklift steering axle which comprises an axle body assembly, a steering knuckle and a pin shaft piece. The induction assembly comprises a stator fixed to one end of the pin shaft piece, a rotor rotationally connected with the top of one end of the axle body assembly and a linkage support fixedly connected between the rotor and the steering knuckle, and a sealing sleeve is arranged below the stator. When the inductor is used, the linkage support is arranged between the rotor and the steering knuckle, maintenance operation can be carried out only by disassembling the linkage support and the dustproof sleeve when the inductor is maintained, the whole process is simple and labor-saving, and the sealing sleeve is arranged between the bearing, close to the stator, of the main pin and the stator, so that maintenance is convenient. The space between the stator and the bearing is divided by the sealing sleeve, so that the stator cannot be polluted even if oil pollution occurs after the bearing is used for a long time, the use performance of the stator is protected, and the service life of the stator is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of steering, in particular to a forklift steering axle. Background Art

[0002] At present, forklift steering axles mostly use contact-type steering angle potentiometers to obtain steering angles. The technology of steering angle potentiometer products is relatively mature, including contact and non-contact types. Among them, contact potentiometers are widely used. For example, forklift steering axles use the rotation of the steering kingpin to drive the potentiometer to rotate mechanically, forming a pressure difference to determine the steering angle.

[0003] There are many existing technologies for forklift steering axles, such as:

[0004] Chinese patent publication number CN217671987U discloses a steering axle with a steering angle detection device, including a bridge body, a steering knuckle and a kingpin, and a detection device; the detection device includes a dust cover connected to the end of the bridge body, and two upper and lower skeleton oil seals are arranged between the dust cover and the inner cavity of the bridge body, and the upper and lower skeleton oil seals form a closed cavity, and the bearing is located in the closed cavity; a magnet is installed on the kingpin, and a contactless potentiometer sensor for sensing changes in the magnetic field of the magnet is installed on the dust cover.

[0005] It can be seen that most forklift steering axles include a bridge body, a steering knuckle and a kingpin. A rotor, i.e. a magnet, is fixed at one end of the kingpin, and a contactless potentiometer sensor fixed on the bridge body is provided on the magnet to sense changes in the magnetic field of the magnet. The magnet rotates when the kingpin rotates, thereby changing the magnetic field. The sensor outputs steering data according to changes in the magnetic field of the magnet. However, bearings are usually sleeved at both ends of the kingpin, and the magnet is fixed at the end of one end of the kingpin. Therefore, after long-term use, oil contamination of the bearing will have an irreversible effect on the magnet, affecting the magnetism and service life of the magnet.

[0006] In view of this, we propose a forklift steering axle. Utility Model Content

[0007] The utility model aims to provide a forklift steering axle with a steering knuckle and a dust cover linked and convenient for maintenance, so as to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A forklift steering axle includes a bridge body assembly, a steering knuckle and a pin shaft component. An induction component is provided above one end of the pin shaft component. The induction component includes a stator fixed to one end of the pin shaft component, a rotor rotatably connected to the top of one end of the bridge body assembly, and a linkage bracket fixedly connected between the rotor and the steering knuckle. A sealing sleeve is provided below the stator.

[0010] As a further solution of the utility model: the bridge body assembly and the steering knuckle are rotatably connected via a pin shaft.

[0011] As a further solution of the utility model: the pin shaft member includes a kingpin, the kingpin is provided with a bearing, the stator is fixed to an end of one end of the kingpin, and the sealing sleeve is provided between the bearing close to the stator and the stator.

[0012] As a further solution of the utility model: the induction component also includes a dust cover, the dust cover is fixed to the top of one end of the bridge body assembly, a through groove is provided in the dust cover, and a mounting block is sleeved in the dust cover.

[0013] As a further solution of the utility model: a limit spring and a limit block are arranged in sequence from top to bottom in the dust cover, a slide groove is arranged on the surface of the mounting block, and the limit spring and the limit block are clamped in the slide groove of the mounting block to limit the rotation direction of the mounting block.

[0014] As a further solution of the utility model: the rotor is fixed to the bottom of the mounting block, and the top of the mounting block is plugged and fixed to one end of the linkage bracket through the through groove of the dust cover.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the forklift steering axle, a linkage bracket is arranged between the rotor and the steering knuckle. When repairing the sensor, it is only necessary to remove the linkage bracket and the dust cover to carry out the repair operation. The overall process is simple and effortless.

[0017] 2. In the forklift steering axle, a sealing sleeve is arranged between the bearing of the kingpin close to the stator and the stator, and the sealing sleeve is used to divide the space between the stator and the bearing. This ensures that even if the bearing is contaminated by oil after long-term use, it will not contaminate the stator, which is beneficial to protecting the performance of the stator and extending the service life of the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0019] Figure 2 This is a schematic diagram of the kingpin and bearing positions of this solution;

[0020] Figure 3 This is a schematic diagram of the installation of the sensing components of this solution;

[0021] Figure 4 This is a schematic diagram of the sensor assembly of this solution.

[0022] The meaning of each number in the figure is:

[0023] 100. Bridge assembly;

[0024] 200, steering knuckle;

[0025] 300, pin shaft; 301, king pin; 302, bearing; 303, sealing sleeve;

[0026] 400, induction component; 401, dust cover; 402, linkage bracket; 403, mounting block; 404, rotor; 405, stator; 406, limit block; 407, limit spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1 As shown, the present embodiment provides a forklift steering axle, including a bridge body assembly 100, a steering knuckle 200 and a pin shaft 300. A sensing component 400 is provided above one end of the pin shaft 300. Considering the realization of monitoring the rear wheel angle, the sensing component 400 includes a stator 405 fixed to one end of the pin shaft 300, a rotor 404 rotatably connected to the top of one end of the bridge body assembly 100, and a linkage bracket 402 fixedly connected between the rotor 404 and the steering knuckle 200. The steering knuckle 200 rotates, and the linkage bracket 402 drives the rotor 404 to rotate synchronously, so that the relative angle between the rotor 404 and the stator 405 changes, and the output voltage changes. The output voltage is transmitted to the vehicle VCU to monitor the rear wheel angle. The rear wheel angle can be displayed in real time through the instrument, or the forklift can realize the synchronous steering function to provide real-time rear wheel angle values. In order to protect the stator 405, a sealing sleeve 303 is provided below the stator 405.

[0029] The improvement of this embodiment lies in that: by setting a linkage bracket 402 between the rotor 404 and the steering knuckle 200, when repairing the sensor, it is only necessary to remove the linkage bracket 402 and the dust cover 401 to perform the repair operation. The overall process is simple and effortless. By setting a sealing sleeve 303 between the bearing 302 of the kingpin 301 close to the stator 405 and the stator 405, the sealing sleeve 303 is used to divide the space between the stator 405 and the bearing 302, so that after a long period of use, even if the bearing 302 is oil-contaminated, it will not cause pollution to the stator 405, which is beneficial to protecting the performance of the stator 405 and extending the service life of the stator 405.

[0030] like Figure 2 As shown, in order to avoid the stator 405 being contaminated by oil, the bridge body assembly 100 and the steering knuckle 200 are rotatably connected via a pin shaft member 300. The pin shaft member 300 includes a kingpin 301, on which a bearing 302 is provided. In this embodiment, two bearings 302 are preferably used, and the two bearings 302 are respectively arranged at the upper and lower parts of the kingpin 301 to maintain the stability of the kingpin 301. One end of the steering knuckle 200 is sleeved on the outer sides of the outer rings of the two bearings 302 and fixed, and the kingpin 301 is sleeved on the inner sides of the inner rings of the two bearings 302 and fixed. By rotating the outer ring and the inner ring of the bearing 302, the steering knuckle 200 can rotate while the kingpin 301 does not rotate. The stator 405 is fixed to the end of one end of the kingpin 301, and the sealing sleeve 303 is arranged between the bearing 302 close to the stator 405 and the stator 405, thereby avoiding the possibility of the stator 405 being contaminated by oil.

[0031] like Figure 3 and Figure 4 As shown, in order to prevent the rotor 404 from being contaminated by dust, the induction component 400 also includes a dust cover 401, which is fixed to the top of one end of the bridge assembly 100. The dust cover 401 is used to prevent dust from entering the gap between the rotor 404 and the stator 405, thereby avoiding the wear of the rotation of the rotor 404 and affecting the accuracy of the output voltage transmitted by the rotor 404 and the stator 405. A through groove is provided in the dust cover 401, and a mounting block 403 is sleeved in the dust cover 401. A limit spring 407 and a limit block 406 are provided in the dust cover 401 from top to bottom. A slide groove is provided on the surface of the mounting block 403. The limit spring 407 and the limit block 406 are clamped in the slide groove of the mounting block 403. The position of the mounting block 403 in the dust cover 401 is limited by the limit block 406, and the rotation direction of the mounting block 403 is limited at the same time. The rotor 404 is fixed to the bottom of the mounting block 403, and the top of the mounting block 403 is fixed to one end of the linkage bracket 402 through the through groove of the dust cover 401.

[0032] It should be further explained that the linkage bracket 402 and the steering knuckle 200, the dust cover 401 and the bridge assembly 100, the mounting block 403 and the rotor 404, and the kingpin 301 and the stator 405 are all fixed by bolts, and the mounting block 403 is clamped in the dust cover 401 by pressing.

[0033] In summary, the working principle of this scheme is as follows:

[0034] After aligning the plug-in interfaces of the bridge body assembly 100 and the steering knuckle 200, inserting the kingpin 301 into the plug-in interfaces of the bridge body assembly 100 and the steering knuckle 200, and sleeve bearings 302 equidistantly at the upper and lower ends of the kingpin 301, the connection between the bridge body assembly 100 and the steering knuckle 200 is completed, and then the sealing sleeve 303 is sleeved above the upper end bearing 302 of the kingpin 301, and the stator 405 is fixed to the kingpin 301 by bolts above the sealing sleeve 303, and the dust cover 401 and the mounting block 403 are taken out, and the mounting block 403 is clamped into the limit block 406 and the limit spring 407 in the dust cover 401 by pressing, and then the dust cover 401 and The mounting block 403 is integrally buckled onto the stator 405, and the dust cover 401 is fixed onto the bridge assembly 100 by bolts. Finally, the linkage bracket 402 is taken out, and one end of the linkage bracket 402 is plugged into the top of the rotor 404. The other end of the linkage bracket 402 is fixed to the steering knuckle 200 by bolts to complete the overall installation. When the steering knuckle 200 rotates, the linkage bracket 402 drives the rotor 404 to rotate synchronously, so that the relative angle between the rotor 404 and the stator 405 changes, which drives the output voltage to change. The output voltage is transmitted to the vehicle VCU to monitor the rear wheel angle. The driver can observe the rear wheel angle value in real time through the instrument.

[0035] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0036] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A forklift steering axle, comprising a bridge body assembly (100), a steering knuckle (200) and a pin member (300), characterized in that: An induction assembly (400) is provided above one end of the pin shaft (300), and the induction assembly (400) includes a stator (405) fixed to one end of the pin shaft (300), a rotor (404) rotatably connected to the top of one end of the bridge body assembly (100), and a linkage bracket (402) fixedly connected between the rotor (404) and the steering knuckle (200), and a sealing sleeve (303) is provided below the stator (405).

2. The forklift steering axle according to claim 1, characterized in that: The bridge body assembly (100) and the steering knuckle (200) are rotatably connected via a pin shaft (300).

3. The forklift steering axle according to claim 2, characterized in that: The pin shaft member (300) includes a main pin (301), a bearing (302) is provided on the main pin (301), the stator (405) is fixed to an end of one end of the main pin (301), and a sealing sleeve (303) is provided between the bearing (302) close to the stator (405) and the stator (405).

4. The forklift steering axle according to claim 1, characterized in that: The induction component (400) further comprises a dust cover (401), wherein the dust cover (401) is fixed to the top of one end of the bridge body assembly (100), a through groove is provided in the dust cover (401), and a mounting block (403) is sleeved in the dust cover (401).

5. The forklift steering axle according to claim 4, characterized in that: A limit spring (407) and a limit block (406) are arranged in sequence from top to bottom in the dust cover (401); a sliding groove is arranged on the surface of the mounting block (403); the limit spring (407) and the limit block (406) are clamped in the sliding groove of the mounting block (403) to limit the rotation direction of the mounting block (403).

6. The forklift steering axle according to claim 5, characterized in that: The rotor (404) is fixed to the bottom of the mounting block (403), and the top of the mounting block (403) is plugged and fixed to one end of the linkage bracket (402) through the through slot of the dust cover (401).

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