Cable trench measuring device for electric power planning and design
The adjustable-height cable trench measuring device solves the problem of inconvenient operation caused by inconsistent cable trench depth, achieving convenient, efficient measurement and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HONGTU ELECTRIC POWER TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-15
AI Technical Summary
Existing cable trench measuring devices are inconvenient to operate in deep cable trenches, resulting in high labor intensity for workers and a high risk of physical injury, as well as low measurement efficiency.
An adjustable height cable trench measuring device was designed. The telescopic rod can be adjusted by means of a pin and spring mechanism. The device is improved in terms of convenience and durability by means of a protective cover and a magnetic connecting block.
It reduces the labor intensity of workers, improves measurement efficiency and ease of operation, avoids physical injury, and extends the service life of the equipment.
Smart Images

Figure CN224246920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring device technology, and in particular to a cable trench measuring device for power planning and design. Background Technology
[0002] In power planning, cables usually need to be buried underground. This requires the design of cable burial. When burying cables, cable trenches need to be dug and cable protection pipes need to be placed. When placing cable protection pipes, the width and length of the cable trench need to be measured to meet the cable burial requirements.
[0003] In the prior art, such as Chinese Patent No. CN220568025U, a cable trench measuring device for power planning and design is disclosed, including a fixed rod and a support assembly. A box is fixedly connected to the outside of the fixed rod. Two rotating shafts are symmetrically rotatably connected to the bottom inner wall of the box. A coil spring is fixedly connected to the outside of the rotating shafts and the part near the bottom inner wall of the box. A measuring tape is wound around the outside of the rotating shafts. Through slots are opened on the two side walls of the box for the measuring tape to pass through. The top of the rotating shaft is rotatably connected to the top inner wall of the box. In this application, pulling the anti-detachment strip will cause the measuring tape to be released from the rotating shaft inside the box. The two measuring tapes are pulled to the opposite side walls of the cable trench in turn. The readings on the two measuring tapes are added together and then added to the length of the box to obtain the length or width of the cable trench.
[0004] However, in practical use, when encountering deep cable trenches, workers often need to bend over or even lie on the edge of the trench to place the measuring device at the bottom for measurement. This not only increases the labor intensity for workers but is also extremely inconvenient to operate, easily leading to low measurement efficiency and even potential worker injuries due to improper operating posture. Therefore, there is an urgent need for a device that can be easily adjusted in height to facilitate measurements in cable trenches of different depths to improve this situation. Utility Model Content
[0005] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a cable trench measuring device for power planning and design.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cable trench measuring device for power planning and design, comprising a measuring device body, a measuring tape disposed inside the measuring device body, a fixed rod fixedly connected to the surface of the measuring device body, a telescopic rod slidably connected inside the fixed rod, a sleeve fixedly connected to the surface of the fixed rod, a pin slidably connected inside the sleeve, a pull rod fixedly connected to the surface of the pin, a pull plate fixedly connected to one end of the pull rod, a spring sleeved on the surface of the pull rod, an adjustment hole opened on the surface of the telescopic rod, and the pin inserted into the adjustment hole.
[0007] Preferably, there are six sets of adjustment holes, which are equidistantly distributed on the surface of the telescopic rod.
[0008] Preferably, the surface of the pull plate is fixedly connected with anti-slip protrusions, which are evenly distributed on the surface of the pull plate.
[0009] Preferably, a baffle is fixedly connected to the surface of the telescopic rod, and the baffle is located above the pointed end of the telescopic rod.
[0010] Preferably, a carrying rope is fixedly connected to the surface of the measuring device body, and a handle is sleeved on the surface of the carrying rope.
[0011] Preferably, a handle sleeve is fixedly connected to the surface of the grip, and the handle sleeve is made of elastic rubber.
[0012] Preferably, a guide rod is fixedly connected to the surface of the telescopic rod, and a guide groove is formed on the inner surface of the fixed rod, with the guide rod being engaged inside the guide groove.
[0013] Preferably, a protective cover is fixedly connected to the surface of the baffle, and the pointed part of the telescopic rod is located inside the protective cover.
[0014] Preferably, a connecting block is fixedly connected to the surface of the baffle, a slot is provided on the inner surface of the protective cover, a magnet is fixedly connected inside the slot, and the connecting block is engaged inside the slot and magnetically connected to the magnet.
[0015] Preferably, there are two sets of connecting blocks, and the two sets of connecting blocks are symmetrically distributed on both sides of the middle part of the surface of the baffle.
[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0017] 1. In this utility model, by pulling the pull plate, the pin slides inside the sleeve and squeezes the spring. Then, the position of the adjustment hole on the telescopic rod corresponding to the pin is changed. Finally, under the action of the spring, the pin is inserted into the corresponding adjustment hole again, realizing the telescopic adjustment of the telescopic rod. This allows the overall length of the measuring device to be changed as needed, making it convenient for use in cable trench measurement scenarios of different depths. It avoids workers having to bend over or adopt inconvenient postures to place the device due to the depth of the cable trench, reducing labor intensity and improving the convenience of operation and measurement efficiency.
[0018] 2. In this utility model, the protective cover protects the pointed part of the telescopic rod, preventing the pointed part from scratching other items or puncturing the human body during carrying. It also prevents the pointed part from being damaged by external factors such as collisions, thus extending the service life of the device. The protective cover can be firmly installed on the baffle through the magnetic connection between the connecting block and the magnet in the slot. At the same time, the protective cover can be easily removed when the pointed part needs to be used. Attached Figure Description
[0019] Figure 1 This utility model provides a schematic diagram of a cable trench measuring device for power planning and design;
[0020] Figure 2 A rear view of a cable trench measuring device for power planning and design is provided for this utility model;
[0021] Figure 3 This utility model provides an exploded view of a cable trench measuring device for power planning and design.
[0022] Figure 4 This utility model proposes a cable trench measuring device for power planning and design. Figure 3 Enlarged view of point A in the middle;
[0023] Figure 5 This utility model provides a schematic diagram of a telescopic rod for a cable trench measuring device used in power planning and design.
[0024] Figure 6 This utility model presents a bottom view of the fixing rod of a cable trench measuring device for power planning and design.
[0025] Legend:
[0026] 1. Measuring device body; 2. Scale tape; 3. Fixed rod; 4. Telescopic rod; 5. Baffle; 6. Sleeve; 7. Protective cover; 8. Pin; 9. Pull rod; 10. Spring; 11. Pull plate; 12. Anti-slip protrusion; 13. Slot; 14. Magnet; 15. Connecting block; 16. Guide rod; 17. Hand rope; 18. Grip; 19. Handle sleeve; 20. Adjustment hole. Detailed Implementation
[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0029] Example 1: As Figure 1 - Figure 6 As shown, this utility model provides a technical solution: a cable trench measuring device for power planning and design, including a measuring device body 1, a measuring tape 2 inside the measuring device body 1, a fixed rod 3 fixedly connected to the surface of the measuring device body 1, a telescopic rod 4 slidably connected inside the fixed rod 3, a sleeve 6 fixedly connected to the surface of the fixed rod 3, a pin 8 slidably connected inside the sleeve 6, a pull rod 9 fixedly connected to the surface of the pin 8, a pull plate 11 fixedly connected to one end of the pull rod 9, a spring 10 sleeved on the surface of the pull rod 9, and adjustment holes 20 opened on the surface of the telescopic rod 4. The pin 8 is inserted into the adjustment holes 20. There are six sets of adjustment holes 20 on the telescopic rod 4. The surface of the pull plate 11 is evenly distributed with anti-slip protrusions 12 fixedly connected to it. The anti-slip protrusions 12 are evenly distributed on the surface of the pull plate 11. The surface of the telescopic rod 4 is fixedly connected with a baffle 5, which is located above the tip of the bottom end of the telescopic rod 4. The surface of the measuring device body 1 is fixedly connected with a carrying rope 17. The surface of the carrying rope 17 is fitted with a handle 18. The surface of the handle 18 is fixedly connected with a handle sleeve 19, which is made of elastic rubber. The surface of the telescopic rod 4 is fixedly connected with a guide rod 16. The inner surface of the fixed rod 3 is provided with a guide groove, and the guide rod 16 is locked inside the guide groove. The surface of the baffle 5 is fixedly connected with a protective cover 7, and the tip of the telescopic rod 4 is located inside the protective cover 7.
[0030] In this embodiment, by pulling the pull plate 11, the pin 8 slides inside the sleeve 6 and compresses the spring 10. Then, the position of the adjustment hole 20 on the telescopic rod 4 corresponding to the pin 8 is changed. Finally, under the action of the spring 10, the pin 8 is inserted back into its corresponding adjustment hole 20, realizing the telescopic adjustment of the telescopic rod 4. This allows the overall length of the measuring device to be changed as needed, facilitating its use in cable trench measurement scenarios of different depths. It avoids workers having to bend over or adopt inconvenient postures to place the device due to the depth of the cable trench, reducing labor intensity and improving operational convenience and measurement efficiency. Through six sets of equidistantly distributed adjustment holes 20, the telescopic rod 4 can achieve multiple precise adjustments relative to the fixed rod 3, enabling the measuring device to adapt to the measurement needs of cable trenches of different depths, improving the applicability and versatility of the device. The evenly distributed anti-slip protrusions 12 on the surface of the pull plate 11 increase the friction between the hand and the pull plate 11, allowing the pin 8 to be inserted when the pull rod 9 is pulled. This allows workers to control the movement of the lever 9 more stably and effortlessly. The baffle 5 on the telescopic rod 4 can limit the insertion of the tip of the telescopic rod 4 into the soil, preventing it from being inserted too deeply. The carrying rope 17 on the surface of the measuring device makes it convenient for workers to carry the device and move it between different measuring locations. The grip 18 on the measuring rope can prevent direct contact between the hand and the carrying rope 17, avoiding the rope from hurting the hand. The elastic rubber handle sleeve 19 on the surface of the grip 18 fits the hand and is comfortable to hold, further optimizing the hand operation experience and making it easier for workers to pick up, move and operate the device for measurement, reducing hand fatigue. The guide rod 16 on the telescopic rod 4 cooperates with the guide groove inside the fixed rod 3, so that the telescopic rod 4 can only slide in a specific direction when it slides in the fixed rod 3, ensuring the smoothness and straightness of the telescopic process and avoiding deflection, making it easier for the pin 8 to be inserted into the adjustment hole 20.
[0031] Example 2: As Figure 3 - Figure 4 As shown, a connecting block 15 is fixedly connected to the surface of the baffle 5, and a slot 13 is opened on the inner surface of the protective cover 7. A magnet 14 is fixedly connected inside the slot 13. The connecting block 15 is locked inside the slot 13 and magnetically connected to the magnet 14. There are two sets of connecting blocks 15, and the two sets of connecting blocks 15 are symmetrically distributed on both sides of the middle part of the surface of the baffle 5.
[0032] In this embodiment, the protective cover 7 protects the pointed part of the telescopic rod 4, preventing the pointed part from scratching other items or puncturing the human body during carrying. It also prevents the pointed part from being damaged by external factors such as collisions, thus extending the service life of the device. The protective cover 7 can be firmly installed on the baffle 5 through the magnetic connection between the connecting block 15 and the magnet 14 in the slot 13. At the same time, the protective cover 7 can be easily removed when the pointed part needs to be used.
[0033] The working principle of this embodiment is as follows: In use, firstly, when facing cable trenches of different depths, the height of the device can be adjusted to adapt to the corresponding depth. The worker pulls the pull plate 11; the evenly distributed anti-slip protrusions 12 on the surface of the pull plate 11 increase the friction between the hand and the pull plate 11. When pulling the pull rod 9 to operate the pin 8, the worker can control the movement of the pull rod 9 more stably and effortlessly. The pull plate 11 drives the pull rod 9 to move. Since the pull rod 9 is fixedly connected to the pin 8, the pin 8 will be pulled out from the adjustment hole 20 on the surface of the telescopic rod 4. At this time, the spring 10 is stretched. Then, the worker can slide the telescopic rod 4 up and down according to the required depth of the cable trench. During this process… In the process, the guide rod 16 fixed to the surface of the telescopic rod 4 slides along the guide groove inside the fixed rod 3, ensuring that the telescopic rod 4 extends and retracts smoothly and linearly. This ensures that the adjustment hole 20 on the telescopic rod 4 remains parallel to the pin 8. When the telescopic rod 4 is adjusted to the appropriate position, the pull plate 11 is released. Under the rebound force of the spring 10, the pin 8 inserts into the corresponding adjustment hole 20, thereby fixing the relative position of the telescopic rod 4 and the fixed rod 3. This achieves the adjustment of the overall length of the device, allowing it to be conveniently placed in cable trenches of different depths for measurement operations. This avoids workers having to bend over or adopt inconvenient postures to place the device due to the depth of the cable trench, reducing labor intensity and improving efficiency. For ease of operation and measurement efficiency, during measurement, the pointed end of the telescopic rod 4 is first inserted into the soil. The baffle 5 prevents the pointed end from being inserted too deeply. Using the measuring tape 2 inside the measuring device body 1, the tape 2 is pulled out and placed at the appropriate position in the cable trench to measure parameters such as length and width. After the measuring device is used, the protective cover 7 is connected to the baffle 5, so that the connecting block 15 on the baffle 5 is inserted into the slot 13 and the protective cover 7 is rotated to make the connecting block 15 magnetically attracted to the magnet 14 in the slot 13. During this process, the protective cover 7 protects the pointed end of the telescopic rod 4, preventing it from scratching other objects during transport. The protective cover 7 can prevent injury from objects or punctures, and also prevent damage to the pointed part from external factors such as collisions, thus extending the service life of the device. At the same time, the magnetic connection between the connecting block 15 and the magnet 14 in the slot 13 allows the protective cover 7 to be securely installed on the baffle 5. It also makes it relatively easy to remove the protective cover 7 when the pointed part needs to be used. Then, the worker can move the measuring device body 1 to different positions by holding the handle 18 on the carrying rope 17. The handle sleeve 19 on the handle 18 fits the hand, improving the comfort of holding and further optimizing the hand-held operation experience. This makes it easier for workers to pick up, move and operate the device for measurement, reducing hand fatigue.
[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A cable trench measuring device for power planning and design, comprising a measuring device body (1), characterized in that: The measuring device body (1) is provided with a measuring tape (2) inside. A fixed rod (3) is fixedly connected to the surface of the measuring device body (1). A telescopic rod (4) is slidably connected inside the fixed rod (3). A sleeve (6) is fixedly connected to the surface of the fixed rod (3). A pin (8) is slidably connected inside the sleeve (6). A pull rod (9) is fixedly connected to the surface of the pin (8). A pull plate (11) is fixedly connected to one end of the pull rod (9). A spring (10) is sleeved on the surface of the pull rod (9). An adjustment hole (20) is opened on the surface of the telescopic rod (4). The pin (8) is inserted into the adjustment hole (20).
2. The cable trench measuring device for power planning and design according to claim 1, characterized in that: There are six sets of adjustment holes (20), and the six sets of adjustment holes (20) are equidistantly distributed on the surface of the telescopic rod (4).
3. The cable trench measuring device for power planning and design according to claim 1, characterized in that: The surface of the pull plate (11) is fixedly connected with anti-slip protrusions (12), which are evenly distributed on the surface of the pull plate (11).
4. The cable trench measuring device for power planning and design according to claim 1, characterized in that: A baffle (5) is fixedly connected to the surface of the telescopic rod (4), and the baffle (5) is located above the tip of the bottom end of the telescopic rod (4).
5. The cable trench measuring device for power planning and design according to claim 1, characterized in that: A carrying rope (17) is fixedly connected to the surface of the measuring device body (1), and a handle (18) is sleeved on the surface of the carrying rope (17).
6. The cable trench measuring device for power planning and design according to claim 5, characterized in that: A handle sleeve (19) is fixedly connected to the surface of the grip (18), and the handle sleeve (19) is made of elastic rubber.
7. The cable trench measuring device for power planning and design according to claim 1, characterized in that: The surface of the telescopic rod (4) is fixedly connected to a guide rod (16), and the inner surface of the fixed rod (3) is provided with a guide groove, and the guide rod (16) is engaged in the guide groove.
8. The cable trench measuring device for power planning and design according to claim 4, characterized in that: The surface of the baffle (5) is fixedly connected to a protective cover (7), and the pointed part of the telescopic rod (4) is located inside the protective cover (7).
9. The cable trench measuring device for power planning and design according to claim 8, characterized in that: A connecting block (15) is fixedly connected to the surface of the baffle (5), and a slot (13) is opened on the inner surface of the protective cover (7). A magnet (14) is fixedly connected inside the slot (13), and the connecting block (15) is locked inside the slot (13) and magnetically connected to the magnet (14).
10. The cable trench measuring device for power planning and design according to claim 9, characterized in that: There are two sets of connecting blocks (15), and the two sets of connecting blocks (15) are symmetrically distributed on both sides of the middle part of the surface of the baffle (5).