A protection device for a municipal engineering cable
By combining the design of a central chassis, a deceleration and side-damping chassis, snap-fit diagonal blocks, and shock-absorbing polyurethane, the stability problem of the cable protection device under the lateral force of the vehicle was solved, achieving effective cable protection and ensuring construction progress.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DINGXIN WISDOM (TIANJIN) TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-30
AI Technical Summary
Existing cable protection devices for municipal engineering projects can cause the device chassis to separate from the slope due to lateral forces when vehicles drive onto the slope, potentially cutting the power lines and affecting the construction progress.
It adopts a combined structure of central chassis, deceleration and side-blocking chassis, snap-fit inclined blocks, cable protection blocks and shock-absorbing polyurethane. The deceleration and side-blocking chassis offsets lateral forces, the shock-absorbing polyurethane provides buffering, the cable protection blocks protect the cables, and the central chassis provides support and limit.
This improved structural stability, reduced the risk of cable damage, extended service life, and ensured that construction progress was not affected by lateral forces from vehicles.
Smart Images

Figure CN224438507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power equipment technology, and in particular to a protection device for municipal engineering cables. Background Technology
[0002] During construction, it is inevitable to lay power lines across the road. Generally, the laying is mainly temporary. However, large vehicles will inevitably pass through the construction section. These large vehicles weigh more than ten tons and will cause great damage to the cables crossing the road, leading to cable breakage and affecting the construction progress.
[0003] As disclosed in application number CN202221718411.0, a device for protecting cross-road cables in municipal engineering belongs to the field of power equipment technology. It includes a chassis, a motor, a worm gear, two worm wheels, and two drill rods. The motor is fixedly connected to the side wall of the chassis. A first through hole is opened on the side wall of the chassis. The output end of the motor passes through the first through hole and extends into the interior of the chassis. One end of the worm gear is rotatably connected to the inner wall of the chassis, and the other end of the worm gear is fixedly connected to the output end of the motor. The upper ends of the two drill rods are rotatably connected to the chassis, and the lower ends of the two drill rods extend through the lower end of the chassis to the bottom of the chassis. The two worm wheels are respectively fixedly sleeved on the two drill rods, and both worm wheels mesh with the worm gear.
[0004] However, when the above-mentioned device is in use, the lateral force on the slope is large when the vehicle drives into the slope. After a long period of use, the chassis of the device may separate from the slope, and the slope may even cut the power line under the action of the lateral force, affecting the construction progress. Utility Model Content
[0005] To address the aforementioned problems, this utility model provides a protective device for municipal engineering cables.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A protective device for municipal engineering cables includes: a central chassis, a deceleration and side-blocking chassis, a snap-fitting wedge block, a cable crossing protection block, a rubber top plate, and shock-absorbing polyurethane. The central chassis is connected to the ground. Two sets of deceleration and side-blocking chassis are provided, which are located on both sides of the central chassis and fixedly connected to the ground. One right-angled side of the snap-fitting wedge block snaps into the deceleration and side-blocking chassis, and the other right-angled side of the snap-fitting wedge block snaps into the cable crossing protection block. The cable crossing protection block is located above the central chassis. Multiple sets of shock-absorbing polyurethane are provided between the central chassis and the cable crossing protection block. The rubber top plate is fixedly installed on the upper side of the cable crossing protection block.
[0008] Preferably, the snap-fit inclined block is provided with an anti-side strip and a positioning block on the first right-angled surface, and the snap-fit inclined block is provided with a sliding positioning block on the second right-angled surface. The anti-side strip and the positioning block are used in conjunction with the deceleration anti-side chassis, and the sliding positioning block is used in conjunction with the line crossing protection block.
[0009] Preferably, the deceleration and side-impact prevention chassis includes: a chassis mounting part and deceleration strips. Multiple sets of deceleration strips are provided, and the multiple sets of deceleration strips are provided on the outer side of the upper surface of the chassis mounting part. The inner side of the upper surface of the chassis mounting part is used in conjunction with the side-impact prevention strips and positioning blocks.
[0010] Preferably, the inner side of the upper surface of the chassis mounting part is provided with an anti-side groove and a positioning groove, wherein the anti-side groove is used in conjunction with the anti-side strip, and the positioning groove is used in conjunction with the positioning block.
[0011] Preferably, the side of the wire-crossing protection block is provided with a positioning groove, which is used in conjunction with a sliding positioning block, allowing the sliding positioning block to slide vertically within the positioning groove.
[0012] Preferably, the positioning block has a T-shaped cross-section.
[0013] Preferably, the sliding positioning block has an L-shaped cross-section.
[0014] The advantages of this utility model are as follows: by setting a deceleration and anti-side chassis, this utility model can offset the lateral force received by the snap-fit inclined block; by setting shock-absorbing polyurethane, it can provide a shock-absorbing effect; by setting a cable protection block, it can protect the cable; and by setting a central chassis, it can not only support the cable protection block, but also limit the deceleration and anti-side chassis, thereby improving the structural stability. Attached Figure Description
[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a front view of the present invention;
[0018] Figure 3 This is a schematic diagram of the structure of the snap-fit inclined block of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the deceleration and side-impact prevention chassis of this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the wire protection block of this utility model;
[0021] Figure 6 This is a cross-sectional view of the snap-fit inclined block of this utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Central chassis; 2. Deceleration and side-blocking chassis; 3. Snap-fitting inclined block; 4. Line crossing protection block; 5. Rubber top plate; 6. Shock-absorbing polyurethane; 31. First right-angled surface; 32. Side-blocking strip; 33. Positioning block; 34. Second right-angled surface; 35. Sliding positioning block; 21. Chassis mounting part; 22. Deceleration strip; 211. Side-blocking groove; 212. Positioning groove; 41. Positioning slide groove. Detailed Implementation
[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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 be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Example 1, combined with Figure 1 and Figure 2 Explanation:
[0028] A protective device for municipal engineering cables includes: a central chassis 1, a deceleration and side-blocking chassis 2, a snap-fit inclined block 3, a cable crossing protection block 4, a rubber top plate 5, and a shock-absorbing polyurethane 6.
[0029] The central chassis 1 is connected to the ground. Two sets of deceleration and anti-side chassis 2 are provided. The two sets of deceleration and anti-side chassis 2 are set on both sides of the central chassis 1 and fixedly connected to the ground. The central chassis 1 is connected to the ground, and the deceleration and anti-side chassis 2 on both sides are also fixed to the ground, providing multiple fixing points, making the entire device difficult to move or damage.
[0030] The right-angled side of the snap-fit block 3 engages with the deceleration and side-protection chassis 2, and the other right-angled side of the snap-fit block 3 engages with the cable-passing protection block 4. The cable-passing protection block 4 is positioned above the central chassis 1, and multiple sets of shock-absorbing polyurethane 6 are installed between the central chassis 1 and the cable-passing protection block 4. These multiple sets of shock-absorbing polyurethane 6, located between the central chassis 1 and the cable-passing protection block 4, can effectively absorb the impact force from above, greatly reducing the risk of damage to the cable.
[0031] The rubber top plate 5 is fixedly installed on the upper side of the cable crossing protection block 4. The cable crossing protection block 4 and the rubber top plate 5 directly cover the cable, providing the main physical barrier to prevent external hard objects from directly hitting, crushing, or rolling the cable.
[0032] The rubber top plate 5 further disperses the pressure and may provide some waterproof and anti-slip functions, protecting the line protection block 4 from direct wear.
[0033] Example 2, based on Example 1, combined with... Figure 3 Explanation:
[0034] The snap-fit inclined block 3 is provided with a side-blocking strip 32 and a positioning block 33 on the first right-angled surface 31, and a sliding positioning block 35 is provided on the second right-angled surface 34. The side-blocking strip 32 and the positioning block 33 are used in conjunction with the deceleration side-blocking chassis 2, and the sliding positioning block 35 is used in conjunction with the line-crossing protection block 4.
[0035] The anti-side strip 32 increases the contact area and friction between the snap-fit wedge block 3 and the deceleration anti-side chassis 2, effectively preventing the snap-fit wedge block 3 from shifting laterally or loosening when subjected to lateral impacts (such as minor vehicle collisions, pedestrian pushing, or ground vibrations). The positioning block 33 facilitates quick and accurate positioning and snap-fit, improving installation efficiency and accuracy and reducing the possibility of installation errors.
[0036] Example 3, based on Example 2, combined with Figure 4 Explanation:
[0037] The deceleration and side-impact prevention chassis 2 includes a chassis mounting part 21 and deceleration strips 22. Multiple sets of deceleration strips 22 are provided, positioned on the outer side of the upper surface of the chassis mounting part 21. The inner side of the upper surface of the chassis mounting part 21 cooperates with the side-impact prevention strips 32 and positioning blocks 33. The chassis mounting part 21 ensures that the entire deceleration and side-impact prevention chassis 2 is securely fixed to the ground. The chassis mounting part 21 can bear ground loads and effectively distribute these forces over a larger ground contact area, reducing localized pressure on the underlying soil or ground. The deceleration strips 22 serve a physical deceleration function.
[0038] Example 4, based on Example 3, combined with Figure 5 Explanation:
[0039] The inner side of the upper surface of the chassis mounting part 21 is provided with an anti-side groove 211 and a positioning groove 212. The anti-side groove 211 is used in conjunction with the anti-side strip 32, and the positioning groove 212 is used in conjunction with the positioning block 33.
[0040] The side of the line protection block 4 is provided with a positioning groove 41, which is used in conjunction with the sliding positioning block 35. The sliding positioning block 35 can slide vertically within the positioning groove 41.
[0041] Example 5, based on Example 4, combined with Figure 6 Explanation:
[0042] The positioning block 33 has a T-shaped cross-section. The T-shape enhances pull-out resistance and improves accuracy and stability.
[0043] The sliding positioning block 35 has an L-shaped cross-section. The L-shaped sliding positioning block 35 is mainly used to connect with the wire protection block 4, and can provide vertical guidance to ensure that the wire protection block 4 can work with the shock-absorbing polyurethane 6 to play a shock-absorbing role.
[0044] The working principle of this utility model is as follows: When in use, the cable passes through the cable protection block 4, which protects the cable from being crushed. The shock-absorbing polyurethane 6 located on the underside of the cable protection block 4 acts as a shock absorber. The deceleration and anti-side chassis 2 and the snap-fit inclined block 3 are used to fix the position of the cable protection block 4, thereby improving structural stability. The deceleration and anti-side chassis 2 can slow down the vehicle in advance when it passes, thus reducing the impact lateral force on the cable protection block 4. This utility model has a reasonable structure, is easy to use, and can offset the lateral force on the snap-fit inclined block, thereby improving structural stability and extending service life.
[0045] For those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model; therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.
Claims
1. A protective device for cables in municipal engineering projects, characterized in that, include: The central chassis (1), deceleration and side-blocking chassis (2), snap-fitting inclined block (3), wire-passing protection block (4), rubber top plate (5), and shock-absorbing polyurethane (6) are provided. The central chassis (1) is connected to the ground. The deceleration and side-blocking chassis (2) is provided in two sets. The two sets of deceleration and side-blocking chassis (2) are provided on both sides of the central chassis (1) and fixedly connected to the ground. The right-angle side of the snap-fitting inclined block (3) is snapped to the deceleration and side-blocking chassis (2), and the right-angle side of the snap-fitting inclined block (3) is snapped to the wire-passing protection block (4). The wire-passing protection block (4) is provided above the central chassis (1). Multiple sets of shock-absorbing polyurethane (6) are provided between the central chassis (1) and the wire-passing protection block (4). The rubber top plate (5) is fixedly installed on the upper side of the wire-passing protection block (4).
2. The protection device for municipal engineering cables according to claim 1, characterized in that, The snap-fit inclined block (3) is provided with a side-blocking strip (32) and a positioning block (33) on the first right-angled surface (31), and a sliding positioning block (35) is provided on the second right-angled surface (34). The side-blocking strip (32) and the positioning block (33) are used in conjunction with the deceleration side-blocking chassis (2), and the sliding positioning block (35) is used in conjunction with the line-crossing protection block (4).
3. The protection device for municipal engineering cables according to claim 2, characterized in that, The deceleration and side-blocking chassis (2) includes: chassis mounting part (21) and deceleration strip (22). Multiple sets of deceleration strip (22) are provided. Multiple sets of deceleration strip (22) are provided on the outer side of the upper surface of chassis mounting part (21). The inner side of the upper surface of chassis mounting part (21) is used in conjunction with side-blocking strip (32) and positioning block (33).
4. The protection device for municipal engineering cables according to claim 3, characterized in that, The chassis mounting part (21) has an anti-side groove (211) and a positioning groove (212) on the inner side of its upper surface. The anti-side groove (211) is used in conjunction with the anti-side strip (32), and the positioning groove (212) is used in conjunction with the positioning block (33).
5. A protection device for municipal engineering cables according to claim 2, characterized in that, The side of the line protection block (4) is provided with a positioning groove (41). The positioning groove (41) is used in conjunction with the sliding positioning block (35). The sliding positioning block (35) can slide vertically in the positioning groove (41).
6. A protection device for municipal engineering cables according to claim 2, characterized in that, The positioning block (33) has a T-shaped cross section.
7. A protection device for municipal engineering cables according to claim 2, characterized in that, The sliding positioning block (35) has an L-shaped cross section.