A prefabricated cable trench end well

Abstract

The present invention discloses a prefabricated cable trench end well, which relates to the technical field of power facilities, including a trench end well body and a water collection well installed at the bottom of the trench end well body, the trench end well body including an upper well chamber and a lower well chamber, the upper well chamber is located directly above the lower well chamber, and the outer wall positions of the top four corners of the upper well chamber are fixedly installed with lifting rings, both sides of the outer walls of the two ends of the lower well chamber are provided with first lifting holes, and the middle positions of both sides of the water collection well are provided with second lifting holes, one side of the trench end well body is provided with a cable conduit entrance and exit, and the other side of the trench end well body is provided with a cable trench docking interface, the bottom of the lower well chamber is provided with an installation port, and the top position of the installation port is provided with a limiting slot. The present invention is assembled in sections and has a lightweight design, which is suitable for installation with a small-tonnage crane under various construction site conditions, is quick to install, and saves resource costs.

Description

Technical Field

[0001] The present invention relates to the field of electric power devices, and further to a prefabricated assembled cable trench end well. Background Art

[0002] Cable shafts are used in conjunction with underground pipelines for long-distance buried power supply. They facilitate the installation and maintenance of cables and facilitate construction and cable inspection. They are underground trenches excavated and constructed according to design requirements. They are used to lay and replace underground pipelines for power or telecommunications cable facilities. They also serve as enclosures for the installed cable facilities. Pipe structures come in rectangular, circular, and arched shapes, and are widely used in buildings, power substations, power plants, and municipal construction.

[0003] The existing cable trench end well is generally an integral structure, which is then directly buried in a preset trench. However, the overall cable trench end well is large in size, and it is very troublesome to lift it during the construction operation. The heavy weight can easily cause safety accidents. Therefore, it is necessary to design a prefabricated and assembled cable trench end well to solve the above problems. Summary of the Invention

[0004] To overcome the shortcomings of the existing technology, the present invention aims to provide a prefabricated cable trench end well that can be assembled in sections. Its lightweight design makes it suitable for installation with small-tonnage cranes in various construction sites, allowing for quick installation and saving resources and costs.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a prefabricated and assembled cable trench end well, comprising a trench end well body and a water collection well installed at the bottom of the trench end well body, the trench end well body comprising an upper well chamber and a lower well chamber, the upper well chamber is located directly above the lower well chamber, and lifting rings are fixedly installed at the outer wall positions at the four corners of the top of the upper well chamber, first lifting holes are opened on both sides of the outer walls of both ends of the lower well chamber, and second lifting holes are opened in the middle positions of both sides of the water collection well, a cable pipe entrance and exit are opened on one side of the trench end well body, a cable trench docking interface is opened on the other side of the trench end well body, an installation port is opened at the bottom of the lower well chamber, and a limiting groove is opened at the top position of the installation port, a ring-shaped limiting block is fixedly installed at the peripheral position of the top of the water collection well, the limiting block is clamped in the limiting groove, and an entrance and exit are opened at the top center position of the upper well chamber. This device consists of three components: an upper well chamber, a lower well chamber, and a water collection well. It is assembled in sections and has a lightweight design. It is suitable for installation with a small-tonnage crane under various construction site conditions. It is quick to install and saves resource costs. The reserved hole positions and hole sizes can be reserved as required to adapt to cable entry and exit docking under various burial depths. The reserved cable trench docking interface is used to connect the main cable trench and the end well, and the other end face is the branch cable conduit entrance and exit, which realizes the function of converting the cable trunk line at the terminal of the main cable trench of the power construction project into a branch line.

[0007] In a preferred embodiment of the invention, limit blocks are fixedly mounted on both sides of the bottom of the upper well chamber, and limit holes are provided on both sides of the top of the lower well chamber, corresponding one-to-one with the limit blocks. When the upper and lower well chambers are connected, the limit blocks are inserted into the limit holes, ensuring stable alignment and fixation of the upper and lower well chambers, thereby improving the precision of the splicing of the upper and lower well chambers.

[0008] In a better technical solution of the invention, the bottom of the limit plug is set as a boss, and the cross-section of the bottom of the limit plug is smaller than the cross-section of the top of the limit plug, the limit socket and the limit plug are plugged and adapted, and a receiving groove is provided at the bottom of the limit plug, and a socket block that is plugged and adapted to the receiving groove is fixedly installed on the bottom inner wall of the limit socket, the cross-section of the socket block is trapezoidal, and the top cross-section of the socket block is smaller than the bottom cross-section of the socket block. The bottom of the limiting plug is set to a boss shape, and the cross-section of the bottom of the limiting plug is smaller than the cross-section of the top of the limiting plug. In the process of splicing the upper well chamber and the lower well chamber, it is convenient for the limiting plug to be smoothly inserted into the limiting socket, thereby improving the convenience of the splicing operation. In addition, a socket block is set at the bottom of the limiting socket, and the cross-section of the socket block is set to a trapezoid, and the top cross-section of the socket block is smaller than the bottom cross-section of the socket block, thereby facilitating the smooth insertion of the socket block into the socket groove, thereby further improving the accuracy and convenience of splicing the upper well chamber and the lower well chamber.

[0009] In a preferred embodiment of the invention, limit blocks are fixedly mounted on both sides of the bottom of the upper well chamber, and limit stop grooves corresponding to the limit blocks are formed on both sides of the top of the lower well chamber. The limit blocks are inserted into the inner walls of the limit stop grooves. During the splicing of the upper and lower well chambers, the limit blocks are retained against the inner walls of the lower well chamber and inserted into the limit stop grooves, further improving the precision and stability of the splicing of the upper and lower well chambers.

[0010] In a preferred technical solution of the invention, the bottom position of the limit stopper near one side of the limit stopper groove is provided with an oblique opening, and a notch is provided at the bottom of the oblique opening, and rollers are rotatably installed between the inner walls on both sides of the notch. Providing an oblique opening at the bottom position of the limit stopper near one side of the limit stopper groove facilitates the smooth insertion of the limit stopper into the inner wall of the lower well chamber and further into the limit stopper groove. The provision of the rollers can effectively reduce the wear of the limit stopper in the limit stopper groove, thereby preventing the wear of the limit stopper from affecting the accuracy of the insertion. In addition, it also facilitates the smooth insertion of the limit stopper into the limit stopper groove.

[0011] In a preferred technical solution of the invention, a fiberglass grille is fixedly installed at the top of the inner wall around the limiting groove, and the fiberglass grille is located directly above the limiting block. The setting of the fiberglass grille makes it convenient for construction workers to stand.

[0012] In a preferred embodiment of the present invention, waterproof strips are fixedly mounted around the bottom of the stop block. Slots corresponding to the waterproof strips are formed around the inner wall of the bottom of the stop groove. The waterproof strips are pressed against the inner wall of the slots, and the diameter of the slots is smaller than the cross-sectional diameter of the waterproof strips. After the water collection well and the lower well chamber are connected, the waterproof strips are pressed into the slots, achieving an effective seal between the water collection well and the lower well chamber, thereby improving the waterproofing effect between the water collection well and the lower well chamber.

[0013] In a preferred technical solution of the invention, waterproof mortar is filled between the outer walls of the limit block and the inner walls of the limit groove. The waterproof mortar further improves the sealing effect between the water collection well and the lower well chamber, thereby improving the waterproof effect between the water collection well and the lower well chamber.

[0014] In a preferred technical solution of the invention, mounting grooves are provided at the top positions of all four sides of the water collection well, a first support block is fixedly installed on the top inner wall of the mounting groove away from the side of the lower well chamber, a second support block is hingedly connected to the bottom of the first support block close to the side of the lower well chamber, the same sealing gasket is fixedly installed on the first support block and the second support block close to the side of the lower well chamber, a threaded hole is provided at the bottom position of the mounting groove away from the side of the lower well chamber, and a threaded rod that matches the threaded hole is provided in the threaded hole, the side of the second support block close to the threaded rod is provided with an inclined surface, and one end of the threaded rod close to the second support block rests on the inclined surface. When the water collection well and the lower well chamber are spliced, the threaded rod is rotated outward from the water collection well, and the threaded rod is pressed against the inclined surface of the second support block, causing the second support block to rotate along the hinge between it and the first support block, so that the sealing gasket effectively seals the connection position of the water collection well and the lower well chamber, further improving the waterproof effect between the water collection well and the lower well chamber.

[0015] In a preferred embodiment of the invention, the sealing gasket is provided with evenly distributed protrusions on one side near the lower well chamber. A waterproof groove is formed in the lower well chamber near the sealing gasket, corresponding one-to-one with each protrusion. The diameter of the waterproof groove is smaller than the diameter of the protrusion. When the sealing gasket is pressed against the surface of the lower well chamber, the protrusions press into the waterproof grooves one-to-one, further improving the sealing effect at the connection between the water collection well and the lower well chamber, and further enhancing the waterproofing effect between the water collection well and the lower well chamber.

[0016] The beneficial effects of the present invention are:

[0017] The present invention provides a prefabricated and assembled cable trench end well, which consists of three components: an upper well chamber, a lower well chamber, and a water collection well. It is assembled in sections and has a lightweight design. It is suitable for installation with a small-tonnage crane under various construction site conditions. It is quick to install and saves resource costs. The position and size of the reserved holes can be reserved according to requirements, and it can adapt to cable entry and exit docking under various burial depth conditions. The reserved cable trench docking interface end is used for connecting the main cable trench and the end well, and the other end face is the branch cable line entrance and exit, which realizes the function of converting the cable trunk line of the main cable trench terminal of the power construction project into a branch line.

[0018] The present invention proposes a prefabricated and assembled cable trench end well, in which the bottom of the limit plug is set to a boss shape, and the cross-section of the bottom of the limit plug is smaller than the cross-section of the top of the limit plug. In the process of splicing the upper well chamber and the lower well chamber, it is convenient to smoothly insert the limit plug into the limit socket, thereby improving the convenience of the splicing operation. In addition, a socket block is set at the bottom of the limit socket, and the cross-section of the socket block is set to a trapezoid, and the top cross-section of the socket block is smaller than the bottom cross-section of the socket block, thereby facilitating the smooth insertion of the socket block into the socket groove, thereby further improving the accuracy and convenience of splicing the upper well chamber and the lower well chamber.

[0019] The present invention proposes a prefabricated and assembled cable trench end well, in which an oblique opening is opened at the bottom position of the limit block near the limit block groove, which facilitates the smooth insertion of the limit block into the inner wall of the lower well chamber and further smoothly inserted into the limit block groove. Then, the setting of the roller can effectively reduce the wear of the limit block when inserted into the limit block groove, avoiding the wear of the limit block affecting the accuracy of the plug-in, and also facilitating the smooth insertion of the limit block into the limit block groove.

[0020] The present invention proposes a prefabricated and assembled cable trench end well. When the water collection well and the lower well chamber are spliced, the threaded rod is rotated toward the outside of the water collection well, and the threaded rod is pressed against the inclined surface of the second support block, so that the second support block rotates along the hinge between it and the first support block, so that the sealing gasket effectively seals the connection position between the water collection well and the lower well chamber, further improving the waterproof effect between the water collection well and the lower well chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a prefabricated cable trench end well proposed by the present invention;

[0022] Figure 2 This is a schematic structural diagram of a prefabricated upper well chamber in a cable trench end well proposed by the present invention;

[0023] Figure 3 This is a schematic structural diagram of a prefabricated cable trench end well lowering chamber proposed by the present invention;

[0024] Figure 4 This is a schematic structural diagram of a prefabricated and assembled water collection well in a cable trench end well proposed by the present invention;

[0025] Figure 5 This is a front cross-sectional structural diagram of a prefabricated assembled cable trench end well proposed by the present invention;

[0026] Figure 6 for Figure 5 A in the middle is an enlarged structural diagram;

[0027] Figure 7 This is a schematic diagram of the partial structure of a prefabricated and assembled water collection well in a cable trench end well proposed by the present invention;

[0028] Figure 8 for Figure 7 The enlarged structural diagram at B in the middle;

[0029] Figure 9 This is a schematic side cross-sectional view of a prefabricated and assembled cable trench end well limit stopper proposed by the present invention;

[0030] Figure 10This is a front cross-sectional structural diagram of a prefabricated and assembled cable trench end well limiting plug proposed by the present invention.

[0031] In the picture:

[0032] 1. Upper well chamber; 2. Lower well chamber; 3. Water collection well; 4. First lifting hole; 5. Limit plug; 6. Lifting ring; 7. Inlet and outlet; 8. Cable trench interface; 9. Limit block; 10. Cable conduit inlet and outlet; 11. Limit plug; 12. Limit stop groove; 13. Limit groove; 14. Limit block; 15. Second lifting hole; 16. Waterproof strip; 17. Fiberglass grille; 18. Sealing gasket; 19. First support block; 20. Threaded rod; 21. Mounting groove; 22. Second support block; 23. Roller; 24. Socket block. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] like Figure 1-5 As shown, 1-5 is provided in the embodiment, a prefabricated assembled cable trench end well, including a trench end well body and a water collection well 3 installed at the bottom of the trench end well body, the trench end well body including an upper well chamber 1 and a lower well chamber 2, the upper well chamber 1 is located directly above the lower well chamber 2, and lifting rings 6 are fixedly installed at the outer wall positions of the four corners of the top of the upper well chamber 1, first lifting holes 4 are opened on both sides of the outer walls of both ends of the lower well chamber 2, and second lifting holes 15 are opened in the middle position of both sides of the water collection well 3, a cable pipe entrance and exit 10 is opened on one side of the trench end well body, a cable trench docking interface 8 is opened on the other side of the trench end well body, an installation port is opened at the bottom of the lower well chamber 2, and a limiting groove 13 is opened at the top position of the installation port, a ring-shaped limit block 14 is fixedly installed at the peripheral position of the top of the water collection well 3, the limit block 14 is clamped in the limit groove 13, and an entrance and exit 7 is opened at the top center position of the upper well chamber 1.

[0035] Example 2

[0036] Reference Figure 1-10 Limiting plugs 5 are fixedly installed on both sides of the bottom ends of the upper well chamber 1, and limiting holes 11 corresponding to the limiting plugs 5 are opened on both sides of the top ends of the lower well chamber 2. When the upper well chamber 1 and the lower well chamber 2 are docked, the limiting plugs 5 are inserted into the limiting holes 11, which can achieve stable alignment and fixation of the upper well chamber 1 and the lower well chamber 2, thereby improving the accuracy of splicing the upper well chamber 1 and the lower well chamber 2.

[0037] Furthermore, the bottom of the limit plug 5 is set in a boss shape, and the cross-section of the bottom of the limit plug 5 is smaller than the cross-section of the top of the limit plug 5. The limit socket 11 is plugged and adapted with the limit plug 5. The bottom of the limit plug 5 is provided with a receiving groove, and the bottom inner wall of the limit socket 11 is fixedly installed with a socket block 24 that is plugged and adapted with the receiving groove. The cross-section of the socket block 24 is set in a trapezoidal shape, and the top cross-section of the socket block 24 is smaller than the bottom cross-section of the socket block 24. The bottom of the limit plug is set in a boss shape, and the cross-section of the bottom of the limit plug 5 is smaller than the bottom cross-section of the socket block 24. The surface is smaller than the cross-section of the top of the limiting plug 5. In the process of splicing the upper well chamber 1 and the lower well chamber 2, it is convenient for the limiting plug 5 to be smoothly inserted into the limiting socket 11, thereby improving the convenience of the splicing operation. In addition, a socket block 24 is arranged at the bottom of the limiting socket 11, and the cross-section of the socket block 24 is set to a trapezoid, and the top cross-section of the socket block 24 is smaller than the bottom cross-section of the socket block 24, thereby facilitating the smooth insertion of the socket block 24 into the socket groove, thereby further improving the accuracy and convenience of splicing the upper well chamber 1 and the lower well chamber 2.

[0038] Furthermore, limit blocks 9 are fixedly installed on both sides of the bottom ends of the upper well chamber 1, and limit grooves 12 corresponding to the limit blocks 9 are opened on both sides of the top ends of the lower well chamber 2. The limit blocks 9 are inserted into the inner wall of the limit groove 12. During the splicing process of the upper well chamber 1 and the lower well chamber 2, the limit blocks 9 are blocked on the inner wall of the lower well chamber 2, and the limit blocks 9 are inserted into the limit groove 12, which further improves the accuracy and stability of the splicing of the upper well chamber 1 and the lower well chamber 2.

[0039] Furthermore, a bevel is provided at the bottom position of the limit block 9 near the limit stop groove 12, and a slot is provided at the bottom of the bevel, and a roller 23 is rotatably installed between the inner walls on both sides of the slot. A bevel is provided at the bottom position of the limit block near the limit stop groove 12, which facilitates the limit block 9 to be smoothly inserted into the inner wall of the lower well chamber 2 and further smoothly inserted into the limit stop groove 12. Then, the setting of the roller 23 can effectively reduce the wear of the limit block 9 when inserted into the limit stop groove 12, thereby avoiding the wear of the limit block 9 affecting the accuracy of the insertion, and also facilitates the smooth insertion of the limit block 9 into the limit stop groove 12.

[0040] Example 3

[0041] Reference Figure 1-8 The same glass fiber reinforced plastic grille 17 is fixedly installed on the top of the inner wall around the limiting groove 13. The glass fiber reinforced plastic grille 17 is located just above the limiting block 14. The setting of the glass fiber reinforced plastic grille 17 facilitates the standing of the construction workers.

[0042] Furthermore, waterproof rubber strips 16 are fixedly installed around the bottom of the limit block 14, and card slots corresponding to the waterproof rubber strips 16 are opened around the inner wall of the bottom of the limit groove 13. The waterproof rubber strips 16 are crimped to the inner wall of the card slot, and the diameter of the card slot is smaller than the cross-sectional diameter of the waterproof rubber strips 16. After the water collection well 3 and the lower well chamber 2 are spliced, the waterproof rubber strips 16 will be pressed into the card slot, realizing effective sealing between the water collection well 3 and the lower well chamber 2, and improving the waterproof effect between the water collection well 3 and the lower well chamber 2.

[0043] Furthermore, waterproof mortar is filled between the outer walls of the limit block 14 and the inner walls of the limit groove 13, and the waterproof mortar further improves the sealing effect between the water collection well 3 and the lower well chamber 2, thereby improving the waterproof effect between the water collection well 3 and the lower well chamber 2.

[0044] Furthermore, mounting grooves 21 are provided at the top positions around the water collection well 3, and a first support block 19 is fixedly installed on the top inner wall of the mounting groove 21 away from the side of the lower well chamber 2, and a second support block 22 is hingedly connected to the side of the first support block 19 close to the lower well chamber 2. The first support block 19 and the second support block 22 are fixedly installed with the same sealing gasket 18 on the side close to the lower well chamber 2, and a threaded hole is provided at the bottom position of the mounting groove 21 away from the side of the lower well chamber 2, and a threaded rod 20 adapted to the threaded hole is provided in the threaded hole, and the second support The side of the block 22 close to the threaded rod 20 is set as an inclined surface, and the end of the threaded rod 20 close to the second support block 22 is against the inclined surface. When the water collection well 3 and the lower well chamber 2 are spliced, the threaded rod 20 is rotated outward from the water collection well 3, and the threaded rod 20 is pressed against the inclined surface of the second support block 22, so that the second support block 22 rotates along the hinge between it and the first support block 19, so that the sealing gasket 18 effectively seals the connection position between the water collection well 3 and the lower well chamber 2, further improving the waterproof effect between the water collection well 3 and the lower well chamber 2.

[0045] Furthermore, the sealing gasket 18 is provided with evenly distributed protrusions on one side close to the lower well chamber 2, and the lower well chamber 2 is provided with a waterproof groove corresponding to the protrusions at a position close to the sealing gasket 18. The diameter of the waterproof groove is smaller than the diameter of the protrusion. When the sealing gasket 18 is pressed on the surface of the lower well chamber 2, the protrusions will be pressed one by one into the waterproof groove, further improving the sealing effect of the connection position between the water collection well 3 and the lower well chamber 2, and further improving the waterproof effect between the water collection well 3 and the lower well chamber 2.

[0046] This device consists of three components: an upper well chamber 1, a lower well chamber 2, and a water collection well 3. It is assembled in sections and has a lightweight design. It is suitable for installation with a small tonnage crane under various construction site conditions. It is quick to install and saves resource costs. The position and size of the reserved holes can be reserved according to requirements to adapt to the cable entry and exit docking under various burial depth conditions. The reserved cable trench docking interface 8 is used to connect the main cable trench and the end well, and the other end face is the branch cable conduit entrance and exit 10, which realizes the function of converting the cable trunk line at the terminal of the main cable trench of the power construction project into a branch line.

[0047] Other technologies of this embodiment adopt existing technologies.

[0048] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A prefabricated cable trench end well, comprising a trench end well body and a water collection well (3) installed at the bottom of the trench end well body, characterized in that: The ditch end well body comprises an upper well chamber (1) and a lower well chamber (2), the upper well chamber (1) is located directly above the lower well chamber (2), and the outer walls of the four corners of the top of the upper well chamber (1) are fixedly installed with lifting rings (6), the outer walls of both ends of the lower well chamber (2) are both provided with first lifting holes (4), and the middle positions of both sides of the water collecting well (3) are both provided with second lifting holes (15), one side of the ditch end well body is provided with a cable pipe inlet and outlet (10), and the other side of the ditch end well body is provided with a cable groove docking interface (8), the bottom of the lower well chamber (2) is provided with an installation opening, and a limiting groove (13) is provided at the top position of the installation opening, and a ring-shaped limiting block (14) is fixedly installed at the peripheral position of the top of the water collecting well (3), and the limiting block (14) is clamped in the limiting groove (13), and an inlet and outlet (7) is provided at the center position of the top of the upper well chamber (1); Limiting plugs (5) are fixedly installed on both sides of the bottom ends of the upper well chamber (1), and limiting sockets (11) corresponding to the limiting plugs (5) are opened on both sides of the top ends of the lower well chamber (2); Limit blocks (9) are fixedly installed on both sides of the bottom of the upper well chamber (1), and limit stop grooves (12) corresponding to the limit blocks (9) are opened on both sides of the top of both ends of the lower well chamber (2), and the limit blocks (9) are inserted into the inner wall of the limit stop groove (12); The water collecting well (3) is provided with mounting grooves (21) at the top positions of all four sides, and a first support block (19) is fixedly installed on the top inner wall of the mounting groove (21) away from the lower well chamber (2), and a second support block (22) is hingedly connected to the bottom of the first support block (19) close to the lower well chamber (2). The first support block (19) and the second support block (22) are fixedly provided with the same sealing gasket (18) at the side close to the lower well chamber (2), and a threaded hole is provided at the bottom position of the mounting groove (21) away from the lower well chamber (2), and a threaded rod (20) adapted to the threaded hole is provided in the threaded hole, and the side of the second support block (22) close to the threaded rod (20) is set as an inclined surface, and one end of the threaded rod (20) close to the second support block (22) rests on the inclined surface.

2. The prefabricated cable trench end well according to claim 1, characterized in that: The bottom of the limiting plug (5) is provided in the form of a boss, and the cross section of the bottom of the limiting plug (5) is smaller than the cross section of the top of the limiting plug (5); the limiting socket (11) is plug-fitted and matched with the limiting plug (5); a receiving groove is provided at the bottom of the limiting plug (5); a socket block (24) plug-fitted and matched with the receiving groove is fixedly mounted on the bottom inner wall of the limiting socket (11); the cross section of the socket block (24) is trapezoidal, and the top cross section of the socket block (24) is smaller than the bottom cross section of the socket block (24).

3. The prefabricated cable trench end well according to claim 1, characterized in that: The limit block (9) is provided with an oblique opening at the bottom position of one side close to the limit groove (12), and a notch is provided at the bottom of the oblique opening. A roller (23) is rotatably mounted between the inner walls on both sides of the notch.

4. The prefabricated cable trench end well according to claim 1, characterized in that: The same glass fiber reinforced plastic grille (17) is fixedly installed at the top position of the inner wall around the limiting groove (13), and the glass fiber reinforced plastic grille (17) is located directly above the limiting block (14).

5. The prefabricated cable trench end well according to claim 1, characterized in that: Waterproof rubber strips (16) are fixedly installed at the four sides of the bottom of the limiting block (14), and slots corresponding to the waterproof rubber strips (16) are opened at the four sides of the inner wall of the bottom of the limiting groove (13). The waterproof rubber strips (16) are pressed against the inner wall of the slots, and the diameter of the slots is smaller than the cross-sectional diameter of the waterproof rubber strips (16).

6. The prefabricated cable trench end well according to claim 1, characterized in that: Waterproof mortar is filled between the outer walls of the limiting block (14) and the inner walls of the limiting groove (13).

7. The prefabricated cable trench end well according to claim 1, characterized in that: The sealing gasket (18) is provided with evenly distributed protrusions on one side close to the lower well chamber (2), and the lower well chamber (2) is provided with waterproof grooves corresponding to the protrusions at positions close to the sealing gasket (18), and the diameter of the waterproof grooves is smaller than the diameter of the protrusions.

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