Limiting device for electronic truck scale
By using a buffer assembly of collision blocks and limit lugs, as well as an anti-loosening assembly of anchor bolts and disc springs in the limit device of the electronic truck scale, the problems of corrosion, loosening and measurement error of the limit device are solved, thereby enhancing the stability and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional electronic truck scale limit devices are susceptible to corrosion, bending, deformation, steel plate detachment, and loosening of anchor bolts. Furthermore, thermal expansion and contraction can lead to measurement errors and loss of preload.
The system uses a collision block and a limiting lug in the buffer assembly, and anchor bolts, disc springs and nuts in the anti-loosening assembly to distribute stress, prevent loosening and perform leveling.
It improves the stability and safety of the equipment, extends its service life, and reduces measurement errors and nut loosening.
Smart Images
Figure CN224034756U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a technical field of truck scale, specifically is a kind of electronic truck scale limiting device. BACKGROUND
[0002] Since 1980s, along with the rapid progress of electronic truck scale and pressure weighing sensor technology, electronic truck scale has gradually become the key equipment indispensable for the measurement of bulk cargo in industries such as industrial and mining enterprises, wharfs and ports, and highway toll gates. Frequent vehicle weighing operations cause the scale platform limiting screw to bear huge impact force and friction force, which often leads to problems in the mechanism that relies solely on bolts and nuts for limiting gap adjustment, such as bolt rust, screw bending or deformation, impact steel plate falling off due to continuous impact, and loose foundation bolts of fixed base plate.
[0003] Traditional limiting technology not only easily causes wear, loosening and even damage of the limiting device, but also is affected by temperature changes. Due to thermal expansion and contraction of the scale platform, the limiting gap changes. Too small gap easily causes the scale body to be stuck, and too large gap increases the shaking amplitude of the scale body. On the other hand, during detection, measurement error easily occurs due to the non-standard horizontal state of the base plate, and thermal expansion and contraction easily causes loss of pre-tightening force between the nut and the base plate. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide an electronic truck scale limiting device that can avoid problems such as rust, bending, deformation, steel plate falling off and loose foundation bolts that are common in traditional bolt and nut limiting through a buffer assembly, and can avoid bending, rust or thread failure of the bolt caused by shear force or bending moment through an anti-loosening assembly.
[0005] The technical problem to be solved by the utility model is solved by the following technical solution:
[0006] An electronic truck scale limiting device includes two face plates, both of which are connected with large end plates at the bottom, the inside of the large end plate is provided with a straight slot a, the bottom of both large end plates is provided with a base plate, the top of the base plate is installed with a weighing sensor, a female lap plate and a male lap plate are arranged between the two large end plates, the bottom of the male lap plate is attached to the top of the female lap plate, the bottom of the female lap plate corresponds to the top of the weighing sensor, a buffer assembly is arranged on one side of the two large end plates to prevent rigid collision that may occur during measurement, the buffer assembly includes a collision block, a nut a and a limiting stud, an anti-loosening assembly is arranged on the top of the base plate to prevent the base plate from loosening and perform horizontal calibration, the anti-loosening assembly includes a foundation bolt, a disc spring and a nut c.
[0007] Preferably, the base plate top is provided with two limiting ears, two limiting ears are connected with two reinforcing rib plates on one side, the limiting ear is internally provided with a straight slot b, two limiting ears are provided with bolts on one side, two big end plates are provided with nuts a on one side, two nuts a and the corresponding big end plate are provided with a plurality of collision blocks with different thicknesses, the bolt penetrates the corresponding straight slot, straight slot b and collision block in sequence, and is threadedly connected with the corresponding nut a, the nut a and the corresponding big end plate leave an adjusting gap, the base plate top is fixedly connected with two limiting ears, four reinforcing rib plates, and the planes of the two are perpendicular to each other, two reinforcing rib plates are parallel to the side surface of the corresponding limiting ear, the reinforcing rib plate and the limiting ear are aligned at the bottom, the top of the sub-lap plate is provided with a level meter, the straight slot b of the two limiting ears and the vertical edge of the corresponding big end plate are parallel to each other, and the straight slot a of the corresponding big end plate is perpendicular to each other.
[0008] Preferably, the base plate bottom is provided with a plurality of anchor bolts, the base plate is internally provided with a plurality of threaded holes threadedly connected with the corresponding anchor bolts, a plurality of anchor bolts penetrate the corresponding threaded hole at one end, and are threadedly connected with a nut b, a plurality of anchor bolts are provided with a nut c on the outside, a plurality of nuts c top are in contact with the bottom of the base plate, a plurality of anchor bolts are provided with a disc spring on the outside, and a plurality of disc springs top are in contact with the bottom of the corresponding nut b.
[0009] The beneficial effects of the utility model are:
[0010] The utility model discloses an advantage lies in, utilize the collision block, nut a and limiting ear in buffer assembly, through the collision block, the contact area of big end plate and limiting ear is increased, and stress is effectively dispersed, thereby enhance the overall stability of equipment. Since the bolt no longer bears direct force, the device successfully avoids the rust, bending, deformation, steel plate falling and anchor bolt loosening and other problems commonly seen in traditional bolt and nut limiting, greatly improves the safety performance and long-term service life of the system.
[0011] Secondly, through the anchor bolt, disc spring and nut c in the anti-loose assembly, when the nut b is subjected to external force, the elastic force of the disc spring can compensate the loosening trend caused by the external force, and can uniformly transmit the pressure to the surface in contact with the base plate, effectively preventing the nut b from loosening. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is the whole structure schematic view of the utility model.
[0013] Figure 2 It is the mother lap plate sectional view of the utility model.
[0014] Figure 3 The utility model discloses a limiting vertical ear section view.
[0015] Figure 4 The utility model discloses a Figure 2 The utility model discloses a
[0016] Figures 1-4 In: 1, panel;101, big end plate;102, base plate;103, weighing sensor;104, female lap plate;105, son lap plate;2, limiting vertical ear;201, reinforcing rib plate;202, bolt;203, nut a;204, impact block;3, level;4, nut b;5, anchor bolt;6, nut c;7, disc spring. Specific embodiments
[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0018] The present application will be described in detail below with reference to the drawings and specific embodiments.
[0019] As Figures 1-4 shown, an electronic truck scale limiting device, two panel 1, two panel 1 bottom are connected with big end plate 101, the inside of big end plate 101 is seted up straight slot a, two big end plate 101 bottom is provided with base plate 102, and base plate 102 top is installed with weighing sensor 103, and two big end plate 101 between is provided with female lap plate 104 and son lap plate 105, and son lap plate 105 bottom and female lap plate 104 top are attached, and female lap plate 104 bottom and weighing sensor 103 top correspond, and the buffer assembly for preventing the rigid collision that possibly occurs in the measuring process is set up in one side of two big end plate 101, and the buffer assembly includes: impact block 204, nut a 203 and limiting vertical ear 2, and the anti-loose assembly for preventing base plate 102 from loosening and carrying out horizontal calibration is set up in base plate 102 top, and the anti-loose assembly includes: anchor bolt 5, disc spring 7 and nut c 6.
[0020] Wherein, by the collision block 204, nut a 203 and limiting lug 2 in the buffer assembly, the contact area with the large end plate 101 and the limiting lug 2 is increased by the collision block 204, effectively dispersing the stress, thereby enhancing the overall stability of the device. Since the bolt 202 no longer bears direct force, the device successfully avoids the problems of rust, bending, deformation, steel plate falling off and foundation bolt loosening commonly seen in traditional bolt and nut limiting, greatly improving the safety performance and long-term service life of the system. Secondly, through the foundation bolt 5, disc spring 7 and nut c6 in the anti-loose assembly, when the nut b4 is subjected to external force, the elastic force of the disc spring 7 can compensate for the loosening trend caused by external force, and can uniformly transmit the pressure to the surface in contact with the foundation plate 102, effectively preventing the nut b4 from loosening.
[0021] Wherein, the foundation plate 102 top is provided with two limiting lugs 2, one side of the two limiting lugs 2 is connected with two reinforcing rib plates 201, the limiting lug 2 is internally provided with a straight slot b, one side of the two limiting lugs 2 is provided with a bolt 202, one side of the two large end plates 101 is provided with a nut a 203, a plurality of collision blocks 204 with different thicknesses are arranged between the two nuts a 203 and the corresponding large end plates 101, the bolt 202 penetrates the corresponding straight slot, straight slot b and collision block 204 in turn, and is threadedly connected with the corresponding nut a 203, the nut a 203 and the corresponding large end plate 101 leave an adjusting gap, the foundation plate 102 top is fixedly connected with the two limiting lugs 2 and the four reinforcing rib plates 201, and is perpendicular to the planes of the two, the two reinforcing rib plates 201 are parallel to the side surface of the corresponding limiting lug 2, the reinforcing rib plate 201 is aligned with the bottom surface of the limiting lug 2, the top of the sub-lap plate 105 is provided with a level 3, the straight slot b of the two limiting lugs 2 and the vertical edge of the corresponding large end plate 101 are parallel to each other, and are perpendicular to the straight slot a of the corresponding large end plate 101.
[0022] When the vehicle enters the electronic truck scale, the large end plate 101 may be horizontally displaced due to the vertical load, the impact block 204 fills the adjustment gap between the large end plate 101 and the limiting stud 2 through the superposition design of different thicknesses, and the vertical intersection structure of the straight slot a and the straight slot b guides the displacement to be fine-tuned in the preset direction. The contact surface of the impact block 204, the large end plate 101 and the limiting stud 2 absorbs the impact kinetic energy through friction, and disperses the stress to the reinforcing rib plate 201 and the base plate 102, avoiding local stress concentration leading to structural deformation. The bolt 202 is locked by the nut a 203 after passing through the straight slot a, the straight slot b and the impact block 204, but the bolt 202 only bears axial pre-tightening action, and the impact load is directly transmitted to the limiting stud 2 by the impact block 204, thereby avoiding the bending, rust or thread failure of the bolt 202 due to shear force or bending moment. The limiting stud 2 restricts the transverse displacement amplitude of the large end plate 101 in the vertical direction of the straight slot b, preventing it from impacting the weighing sensor 103 by excessive deviation, and the reinforcing rib plate 201 is aligned with the bottom surface of the limiting stud 2, and the overall structure is enhanced by the layout of two vertical planes to enhance the impact resistance of the overall structure.
[0023] The base plate 102 is provided with a plurality of foundation bolts 5 at the bottom, a plurality of threaded holes are arranged in the base plate 102 and are in threaded connection with the corresponding foundation bolts 5, one end of each of the plurality of foundation bolts 5 penetrates through the corresponding threaded hole and is in threaded connection with a nut b4, a plurality of nuts c6 are arranged outside the plurality of foundation bolts 5, the top of each of the plurality of nuts c6 is in contact with the bottom of the base plate 102, and a plurality of disc springs 7 are arranged outside the plurality of foundation bolts 5, and the top of each of the plurality of disc springs 7 is in contact with the bottom of the corresponding nut b4.
[0024] When detecting, measurement error is prone to occur due to that the base plate is not in a standard horizontal state, and the pre-tightening force loss between the nut and the base plate is prone to be caused by thermal expansion and contraction. After the foundation bolt 5 penetrates through the threaded hole of the base plate 102, it is pre-tightened and fixed by the nut b4, and the disc spring 7 is compressed between the nut b4 and the base plate 102, and the elastic deformation generates a continuous reverse tension to offset the loosening trend of the nut b4 caused by vibration or temperature deformation. When external vibration is transmitted to the base plate 102, the disc spring 7 absorbs vibration energy through dynamic compression and rebound to maintain the stability of the threaded engagement between the nut b4 and the foundation bolt 5. The nut c6 is used as an auxiliary locking part, is in threaded connection with the foundation bolt 5 and is in close contact with the bottom of the base plate 102, limits the axial displacement of the foundation bolt 5 through mechanical locking, prevents the base plate 102 from sinking or tilting due to long-term load action, and ensures that the elastic pressure of the disc spring 7 is uniformly transmitted to the bottom surface of the base plate 102 during installation, so that the contact between the base plate 102 and the ground contact surface is balanced, local stress concentration leading to horizontal calibration failure is avoided, and the stability of the base plate 102 in subsequent use is improved.
[0025] Working principle:
[0026] When the vehicle enters the electronic truck scale, the large end plate 101 may produce horizontal displacement due to vertical load, the collision block 204 fills the adjustment gap between the large end plate 101 and the limiting stud 2 through the superposition design of different thicknesses, and the vertical intersection structure of the straight slot a and the straight slot b guides the displacement to be fine-tuned in the preset direction. The contact surface of the collision block 204, the large end plate 101 and the limiting stud 2 absorbs the impact kinetic energy through friction, and disperses the stress to the reinforcing rib plate 201 and the base plate 102, avoiding local stress concentration leading to structural deformation. The bolt 202 is locked by the nut a 203 after passing through the straight slot a, the straight slot b and the collision block 204, but the bolt 202 only bears axial pre-tightening action, and the impact load is directly transmitted to the limiting stud 2 by the collision block 204, thereby avoiding bending, rust or thread failure of the bolt 202 due to shear force or bending moment. The limiting stud 2 restricts the transverse displacement amplitude of the large end plate 101 in the vertical direction of the straight slot b, preventing it from impacting the weighing sensor 103 by excessive deviation, and the reinforcing rib plate 201 is aligned with the bottom surface of the limiting stud 2, and the layout of two vertical planes enhances the impact resistance of the overall structure.
[0027] When detecting, measurement error is prone to occur due to the fact that the base plate is not in a standard horizontal state, and the pre-tightening force loss between the nut and the base plate is also prone to occur due to thermal expansion and contraction. After the foundation bolt 5 passes through the threaded hole of the base plate 102, it is pre-tightened and fixed by the nut b4. The disc spring 7 is compressed between the nut b4 and the base plate 102, and the elastic deformation generates a continuous reverse tension to offset the loosening trend of the nut b4 due to vibration or temperature deformation. When external vibration is transmitted to the base plate 102, the disc spring 7 absorbs vibration energy through dynamic compression and rebound to maintain the stability of the threaded engagement between the nut b4 and the foundation bolt 5. The nut c6 is used as an auxiliary locking part, which is in threaded cooperation with the foundation bolt 5 and closely attached to the bottom of the base plate 102. By mechanically locking the axial displacement of the foundation bolt 5, it prevents the base plate 102 from sinking or tilting due to long-term load. During installation, the elastic pressure of the disc spring 7 is uniformly transmitted to the bottom surface of the base plate 102, ensuring that the contact surface of the base plate 102 and the ground is in contact balance, avoiding local stress concentration leading to horizontal calibration failure, and improving the stability of the subsequent use of the base plate 102.
[0028] In addition, one side of the panel 1 is connected with the female lap plate 104, and the other side of the panel 1 is connected with the female lap plate 104. The bottom of the male lap plate 105 is attached to the top of the female lap plate 104.
[0029] The above has carried on the detailed introduction to the electronic truck scale limiting device provided by the embodiment of the application, the principle and implementation mode of the application are described in this paper by applying specific examples, the above embodiment is only used to help understand the technical scheme of the application and its core idea, and those skilled in the art should understand that: the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.
Claims
1. An electronic truck scale limiting device, characterized in that, include: Two panels (1), each panel (1) is connected to a large end plate (101) at the bottom. The large end plate (101) has a straight slot a inside. A base plate (102) is provided at the bottom of the two large end plates (101). A weighing sensor (103) is installed on the top of the base plate (102). A female overlap plate (104) and a female overlap plate (105) are provided between the two large end plates. The bottom of the female overlap plate (105) is in contact with the top of the female overlap plate (104). The bottom of the female overlap plate (104) corresponds to the top of the weighing sensor (103). A buffer assembly is provided on one side of the two large end plates (101) to prevent rigid collisions that may occur during the measurement process. The buffer assembly includes: a collision block (204), a nut a (203), and a limiting lug (2). The anti-loosening component is installed on the top of the base plate (102) to prevent the base plate (102) from becoming loose and to perform horizontal alignment. The anti-loosening component includes: anchor bolts (5), disc springs (7) and nuts c (6).
2. The electronic truck scale limiting device according to claim 1, characterized in that, The base plate (102) is provided with two limiting lugs (2) on the top. Two reinforcing ribs (201) are connected to one side of the two limiting lugs (2). A straight groove b is opened inside the limiting lugs (2). Bolts (202) are provided on one side of the two limiting lugs (2). Nuts a (203) are provided on one side of the two large end plates (101). Multiple collision blocks (204) of different thicknesses are provided between the two nuts a (203) and the corresponding large end plates (101). The bolts (202) pass through the corresponding straight groove, the straight groove b and the collision block (204) in sequence, and are threadedly connected to the corresponding nuts a (203). An adjustment gap is left between the nuts a (203) and the corresponding large end plates (101).
3. The electronic truck scale limiting device according to claim 2, characterized in that, The top of the base plate (102) is fixedly connected to the two limiting lugs (2) and the four reinforcing ribs (201), and is perpendicular to the plane of both.
4. The electronic truck scale limiting device according to claim 2, characterized in that, Both of the reinforcing ribs (201) are parallel to the side of the corresponding limiting lug (2), and the bottom surfaces of the reinforcing ribs (201) and the limiting lug (2) are aligned.
5. The electronic truck scale limiting device according to claim 2, characterized in that, A level (3) is installed on the top of the sub-lap plate (105). The straight slots b of the two limiting lugs (2) are parallel to the vertical side of the corresponding large end plate (101) and perpendicular to the straight slot a of the corresponding large end plate (101).
6. The electronic truck scale limiting device according to claim 1, characterized in that, The base plate (102) has multiple anchor bolts (5) at its bottom. The base plate (102) has multiple threaded holes that are threaded to the corresponding anchor bolts (5). Each anchor bolt (5) has one end that passes through the corresponding threaded hole and is threaded to a nut b (4).
7. The electronic truck scale limiting device according to claim 6, characterized in that, Nuts c (6) are provided on the outer side of each of the anchor bolts (5). The top of each nut c (6) contacts the bottom of the base plate (102). Disc springs (7) are provided on the outer side of each of the anchor bolts (5). The top of each disc spring (7) is attached to the bottom of the corresponding nut b (4).