A device for continuous beam construction of concrete

Abstract

The application relates to a concrete continuous beam construction device, and relates to the technical field of continuous beam construction.The concrete continuous beam construction device comprises a mounting frame, a fixing seat is arranged on the mounting frame, a connecting seat is detachably connected to the fixing seat, and a containing cavity for placing a steel pipe is surrounded between the fixing seat and the connecting seat; a marking mechanism abutting against the steel pipe is slidably arranged on the fixing seat; and a driving mechanism for driving the marking piece to slide is arranged on the fixing seat.The cooperation of various components in the application utilizes the steel pipe of the continuous beam support to perform pre-pressing detection, the detection mode is intuitive and simple, the steel cable is avoided from being used in the prior art, deviation or inclination of the steel cable is avoided when the steel cable is pulled tight, and the problem that the accuracy of detection data is affected is solved.

Description

Technical Field

[0001] This application relates to the field of continuous beam construction technology, and in particular to an apparatus for constructing concrete continuous beams. Background Technology

[0002] Continuous beam supports are essential equipment in the construction of continuous beams. They are usually made of steel pipes as load-bearing columns, and together with bottom crossbeams, distribution longitudinal beams and formwork, they form a base plate system. After the support is erected, pre-stressing tests are required to eliminate the inelastic deformation of the support and the foundation. At the same time, the elastic deformation value of the support is obtained as the basis for the construction camber, and the foundation settlement is measured to provide empirical data for the construction of similar bridges.

[0003] Preloading testing is usually carried out in multiple stages according to the multiple of the construction load. After each stage of loading is completed, the settlement of the support is tested at certain intervals (currently, the interval is usually 6 hours in construction). Loading can only continue when the settlement difference is less than a certain value (currently, the settlement difference generally needs to be less than 2mm in construction).

[0004] Currently, steel cables are generally used in conjunction with hydraulic equipment for pre-compression testing. During testing, the steel cable needs to be adjusted to be parallel to the steel pipe. However, since the steel cable is prone to deviation or tilting when tightened, the test data is easily inaccurate. Summary of the Invention

[0005] To address the problems existing in the above-mentioned technologies, this application provides a device for constructing continuous concrete beams.

[0006] The technical solution of the concrete continuous beam construction device provided in this application is as follows:

[0007] A device for constructing a continuous concrete beam includes an installation frame, a fixed seat on the installation frame, a connecting seat detachably connected to the fixed seat, and a cavity for placing a steel pipe between the fixed seat and the connecting seat; a marking mechanism that abuts against the steel pipe is slidably provided on the fixed seat, and a driving mechanism for driving the marking mechanism to slide is provided on the fixed seat.

[0008] By adopting the above technical solution, when the support is erected and pre-compression testing is required, the connecting seat and the fixed seat are connected so that the steel pipe is located in the receiving cavity. The mounting frame supports the fixed seat and the connecting seat. At this time, the marking mechanism abuts against the outer wall of the steel pipe, and the driving mechanism drives the marking mechanism to slide to leave a mark on the outer wall of the steel pipe. This mark is the initial mark. When pre-compression is performed later by hydraulic equipment or other gravity loading equipment, the driving mechanism drives the marking mechanism to slide to leave marks under different pre-compression amounts. By observing the difference between two adjacent marks, a set of settlement differences is obtained, and pre-compression testing is performed accordingly. After the pre-compression test is completed, the connecting seat is disassembled to separate the entire device from the steel pipe, and the device can be reused. The cooperation of each component in the above process utilizes the steel pipe of the continuous beam support for pre-compression testing. The testing method is intuitive and simple, avoiding the problem of deviation or tilting of the steel cable when tightened, which affects the accuracy of the test data, as is the case with the steel cable testing used in the prior art.

[0009] Optionally, the driving mechanism includes a first half-tooth ring slidably mounted on the fixed base, and the driving mechanism includes a driving motor mounted on the fixed base. The output shaft of the driving motor is coaxially fixedly connected to a gear, and the rotation of the gear drives the first half-tooth ring to slide. The marking mechanism is located inside the first half-tooth ring.

[0010] By adopting the above technical solution, the forward rotation of the drive motor output shaft drives the gear to rotate forward, thereby causing the first half-gear ring to slide. During the sliding of the first half-gear ring, the marking mechanism follows the sliding of the first half-gear ring to leave a mark on the outer wall of the steel pipe. When the first half-gear ring slides a certain range, the drive motor output shaft reverses, thereby driving the first half-gear ring to reset, ready for the next marking.

[0011] Optionally, a second half-tooth ring is slidably mounted on the connecting seat and engages with the first half-tooth ring, and the gear meshes with the first half-tooth ring and / or the second half-tooth ring.

[0012] By adopting the above technical solution, when the connecting seat and the fixed seat are connected, the second half-gear ring engages with the first half-gear, thereby forming a complete gear ring. The steel pipe is located inside the gear ring. The rotation of the drive motor drives the gear to rotate, and the gear meshes with the first half-gear to drive the first half-gear ring to slide. The rotation of the first half-gear ring pushes the second half-gear ring to slide. When the first half-gear ring pushes the second half-gear ring to slide until the gear meshes with the engagement point of the first and second half-gear rings, the gear switches from meshing with the first half-gear ring to meshing with the second half-gear ring. The sliding of the second half-gear ring then pushes the first half-gear ring to slide. During this process, the marking mechanism can perform ring marking, so that the marking range is wider and it is easier for operators to conduct subsequent inspection, observation and reading. Moreover, since the marking mechanism rotates around the steel pipe, there is no need for the drive motor to reverse and drive the marking mechanism to reset, thereby improving the convenience of operation.

[0013] Optionally, the first half-tooth ring is provided with a plug, and the second half-tooth ring is provided with a slot for the plug to be inserted.

[0014] By adopting the above technical solution, when the first half-gear ring and the second half-gear ring are connected, the insert block is inserted into the slot, thereby improving the tightness of the connection between the first half-gear ring and the second half-gear ring, which is beneficial to the connection between the first half-gear ring and the second half-gear ring and the gear, and thus improves the stability of the marking mechanism during the sliding process.

[0015] Optionally, the slot is provided with a slide rail, a positioning pin is slidably disposed in the slide rail, a first spring is disposed in the slide rail, the end of the first spring is fixed to the positioning pin, and the insert block is provided with a positioning hole for the positioning pin to be inserted.

[0016] By adopting the above technical solution, during the process of inserting the plug into the slot, the positioning pin first abuts against the plug and is pushed by the plug, and then slides along the slot. The first spring is in a compressed state. When the plug is fully inserted into the slot, the positioning pin connects with the positioning hole, and the first spring then pushes the positioning pin into the positioning hole, thereby further improving the tightness of the connection between the first half-tooth ring and the second half-tooth ring.

[0017] Optionally, a first anti-detachment plate is fixed on the fixing seat, the first support plate and the first anti-detachment plate are arranged in parallel, and the first half-tooth ring is located between the first support plate and the first anti-detachment plate; a first limiting rod is fixed on the first support plate, and a first limiting groove is opened on the first half-tooth ring, the end of the first limiting rod is located in the first limiting groove and slides in cooperation with the first limiting groove.

[0018] By adopting the above technical solution, the first half-tooth ring is located between the first anti-detachment plate and the first support plate. The cooperation between the first anti-detachment plate and the first support plate positions the first half-tooth ring and prevents it from separating from the fixed seat. During the entire sliding process of the first half-tooth ring, the end of the first limiting rod is always located in the first limiting groove and slides in cooperation with the first limiting groove, thereby limiting the sliding direction of the first half-tooth ring and avoiding misalignment during the sliding process of the first half-tooth ring.

[0019] Optionally, the marking mechanism includes a mounting block slidably mounted on the fixed base, and the driving mechanism is used to drive the mounting block to slide. The mounting block has a placement cavity, and a snap-fit ​​seat is provided in the placement cavity. A marking pen is snapped onto the snap-fit ​​seat, and the end of the marking pen abuts against the steel pipe.

[0020] By adopting the above technical solution, the drive mechanism drives the mounting block to slide, and the sliding of the mounting block drives the snap-fit ​​seat in the placement cavity to slide, thereby driving the marking pen to slide. During the sliding process, the end of the marking pen leaves a mark on the outer wall of the steel pipe.

[0021] Optionally, the locking seat includes a fixing ring slidably disposed in the placement cavity, a second spring is disposed in the placement cavity, the end of the second spring abuts against the fixing ring, and a plurality of elastic locking plates are disposed on the fixing ring, the locking plates surrounding to form a locking cavity for locking the marking pen.

[0022] By adopting the above technical solution, the marking pen is placed in the snap-fit ​​cavity, and the fixing ring is placed in the placement cavity. The outer sides of the multiple elastic snap-fit ​​plates abut against the mounting block, and the inner sides abut against the marking pen, thereby fixing the marking pen in the placement cavity. At this time, the end of the fixing ring abuts against the end of the second spring, and the elastic movement of the second spring drives the end of the marking pen to remain in contact with the steel pipe, thereby improving the stability of the marking pen during the marking process. Since the marking pen is snapped into the snap-fit ​​cavity by the elastic snap-fit ​​plates, the marking pen can be replaced when the ink in the marking pen is exhausted, making the device reusable.

[0023] Optionally, the elastic plate is provided with a reinforcing pad on the side near the marking pen.

[0024] By adopting the above technical solution, when the marking pen is placed in the snap-fit ​​cavity and the fixing ring is placed in the placement cavity, and the outer sides of the multiple elastic snap-fit ​​plates abut against the mounting block, the inner sides of the elastic snap-fit ​​plates are connected to the marking pen through the reinforcing pad. At this time, the reinforcing pad is squeezed and deformed, thereby improving the stability of the marking pen in the snap-fit ​​cavity and preventing the marking pen from falling off.

[0025] Optionally, a protrusion is fixed inside the placement cavity, and a groove is provided on the fixing ring. The protrusion is located in the groove and slides in cooperation with the groove.

[0026] By adopting the above technical solution, when the fixing ring is located in the placement cavity, the protrusion is located in the groove and slides with the groove, thereby preventing the fixing ring from detaching from the placement cavity and improving the stability of the pen during the sliding process.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The steel pipes of the continuous beam support are used for pre-stress testing. The testing method is intuitive and simple, avoiding the problem of deviation or tilting of the steel cable when it is tightened, which affects the accuracy of the test data, as is the case with the existing technology that uses steel cable testing.

[0029] 2. The marking mechanism can make ring markings, so that the marking range is wider and it is easier for operators to conduct subsequent inspections, observations and readings; and since the marking mechanism rotates around the steel pipe, there is no need for the drive motor to reverse and drive the marking mechanism to reset, thereby improving the convenience of operation.

[0030] 3. The marker pen is snapped into the snap-in cavity by a flexible plate. When the ink in the marker pen runs out, the marker pen can be replaced, making the device reusable. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a concrete continuous beam construction device according to an embodiment of this application, in which the steel pipe is located in the receiving cavity;

[0032] Figure 2 yes Figure 1 A schematic diagram of the overall structure of the equipment for constructing a continuous concrete beam when the central steel pipe is not in the receiving cavity;

[0033] Figure 3 yes Figure 2 Cross-sectional view of the connecting seat and the fixed seat;

[0034] Figure 4 yes Figure 3 Enlarged view of section A;

[0035] Figure 5 yes Figure 3 A sectional view;

[0036] Figure 6 yes Figure 2 Enlarged view of section B;

[0037] Figure 7 yes Figure 2 A cross-sectional view of the marking mechanism.

[0038] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Fixing base; 3. Connecting base; 4. Receiving cavity; 5. Steel pipe; 6. Marking mechanism; 61. Mounting block; 62. Placement cavity; 63. Marking pen; 64. Fixing ring; 65. Second spring; 66. Elastic retaining plate; 67. Snap-fit ​​cavity; 68. Reinforcing pad; 69. Protrusion; 70. Groove; 7. Drive mechanism; 71. First half-tooth ring; 72. Drive motor; 73. Gear; 8. Second half-tooth ring; 9. Insert block; 10. Slot; 11. Slide rail; 12. Positioning pin; 13. Positioning hole; 14. First support plate; 15. First anti-detachment plate; 16. First limiting rod; 17. First limiting groove; 18. Second support plate; 19. Second anti-detachment plate; 20. Second limiting rod; 21. Second limiting groove; 22. Viewing window; 23. First spring. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0040] This application discloses an apparatus for constructing continuous concrete beams. (Refer to...) Figure 1 and Figure 2 The equipment for constructing a continuous concrete beam includes an installation frame 1, a fixed seat 2 on the installation frame 1, a connecting seat 3 detachably connected to the fixed seat 2, and a receiving cavity 4 for placing a steel pipe 5 between the fixed seat 2 and the connecting seat 3; a marking mechanism 6 that slides on the fixed seat 2 and abuts against the steel pipe 5, and a driving mechanism 7 for driving the marking component to slide on the fixed seat 2.

[0041] Reference Figure 3 and Figure 4 Both the fixed base 2 and the connecting base 3 are semi-circular, and are connected by bolts. The connecting base 3 has a hole, and a viewing window 22 is installed in the hole to facilitate the operator's observation of the markings left by the marking mechanism 6. The viewing window 22 is marked with scale lines. The drive mechanism 7 includes a drive motor 72 mounted on the fixed base 2. The output shaft of the drive motor 72 is coaxially fixedly connected to a gear 73. A first half-tooth ring 71 is slidably provided on the inner side wall of the fixed base 2, and a second half-tooth ring 71 is slidably provided on the inner side wall of the connecting base 3 to mate with the first half-tooth ring 71. Ring 8, the first half-tooth ring 71 and the second half-tooth ring 8 are connected to form a complete toothed ring, the steel pipe 5 is located inside the toothed ring, the gear 73 meshes with the first half-tooth ring 71 and / or the second half-tooth ring 8; the first half-tooth ring 71 is provided with a plug 9, the second half-tooth ring 8 is provided with a slot 10 for the plug 9 to be inserted, the slot 10 is provided with a slide 11, the slide 11 is provided with a positioning pin 12, the slide 11 is provided with a first spring 23, the end of the first spring 23 is fixed to the positioning pin 12, the plug 9 is provided with a positioning hole 13 for the positioning pin 12 to be inserted.

[0042] When connecting the connecting seat 3 and the fixed seat 2, the second half-gear ring 8 mates with the first half-gear 73, and the insert block 9 is inserted into the slot 10. During the insertion of the insert block 9 into the slot 10, the positioning pin 12 first abuts against the insert block 9 and is pushed by the insert block 9, and then slides along the inside of the slot 10. The first spring 23 is in a compressed state. When the insert block 9 is fully inserted into the slot 10, the positioning pin 12 mates with the positioning hole 13, and the first spring 23 then pushes the positioning pin 12 into the positioning hole 13, improving the tightness of the connection between the first half-gear ring 71 and the second half-gear ring 8. The first half-gear ring 71 and the second half-gear ring 8 mate to form a complete gear ring. The steel pipe 5 is located inside the gear ring. The rotation of the drive motor 72 drives the gear 73 to rotate. The gear 73 meshes with the first half gear 73 to drive the first half gear ring 71 to slide. The rotation of the first half gear ring 71 pushes the second half gear ring 8 to slide. When the first half gear ring 71 pushes the second half gear ring 8 to slide, and the gear 73 meshes with the first half gear ring 71 and the second half gear ring 8, the gear 73 switches from meshing with the first half gear ring 71 to meshing with the second half gear ring 8. The sliding of the second half gear ring 8 then pushes the first half gear ring 71 to slide. During this process, the marking mechanism 6 makes a ring mark, leaving a mark on the outer wall of the steel pipe 5.

[0043] Reference Figure 2 and Figure 5 A semi-annular first support plate 14 is fixed to the inner wall of the fixing seat 2. Multiple first anti-detachment plates 15 are fixed to the inner wall of the fixing seat 2, forming a cavity between the multiple first anti-detachment plates 15 and the first support plate 14. A first semi-toothed ring 71 slides within the cavity. A semi-annular second support plate 18 is fixed to the inner wall of the connecting seat 3. Multiple second anti-detachment plates 19 are fixed to the inner wall of the connecting seat 3, forming a cavity between the multiple second anti-detachment plates 19 and the second support plate 18. The toothed ring 8 slides within this cavity; the bottom end of the first half toothed ring 71 is provided with an annular first limiting groove 17, and a first limiting rod 16 is fixed on the first support plate 14. The end of the first limiting rod 16 is located in the first limiting groove 17 and slides in cooperation with the first limiting groove 17; the bottom end of the second half toothed ring 8 is provided with an annular second limiting groove 21, and a second limiting rod 20 is fixed on the second support plate 18. The end of the second limiting rod 20 is located in the second limiting groove 21 and slides in cooperation with the second limiting groove 21.

[0044] The first half-tooth ring 71 is located between the first anti-detachment plate 15 and the first support plate 14. The cooperation between the first anti-detachment plate 15 and the first support plate 14 is used to position the first half-tooth ring 71 and prevent the first half-tooth ring 71 from separating from the fixed seat 2. During the entire sliding process of the first half-tooth ring 71, the end of the first limiting rod 16 is always located in the first limiting groove 17 and slides in cooperation with the first limiting groove 17, thereby restricting the sliding direction of the first half-tooth ring 71. The movement process of the second half-tooth ring 8 is the same.

[0045] Reference Figure 6 and Figure 7 The marking mechanism 6 includes a mounting block 61 slidably mounted on the fixed base 2, and a driving mechanism 7 for driving the mounting block 61 to slide. The mounting block 61 has a placement cavity 62, and a fixing ring 64 is slidably mounted in the placement cavity 62. A semi-circular protrusion 69 is fixed in the placement cavity 62. The fixing ring 64 has a groove 70 with a chamfer. The protrusion 69 is located in the groove 70 and slides in cooperation with the groove 70. A second spring 65 is provided in the placement cavity 62. One end of the second spring 65 is fixed to the mounting block 61, and the other end is fixed to the fixing ring 64. The fixing ring 64 has multiple elastic plates 66, which surround a snap-fit ​​cavity 67. A marking pen 63 is snapped into the snap-fit ​​cavity 67. The end of the marking pen 63 abuts against the steel pipe 5. A reinforcing pad 68 is provided on the side of the elastic plate 66 near the marking pen 63.

[0046] The marking pen is placed in the snap-fit ​​cavity 67, and the fixing ring 64 is placed in the placement cavity 62. At this time, the second spring 65 is in a compressed state, the protrusion 69 is located in the groove 70 and slides in cooperation with the groove 70, and the outer side of the multiple elastic snap-fit ​​plates 66 abuts against the mounting block 61, and the inner reinforcing pad 68 abuts against the marking pen 63. The reinforcing pad 68 is deformed by compression, thereby fixing the marking pen 63 in the placement cavity 62. The sliding of the first half-tooth ring 71 drives the mounting block 61 to slide, and the mounting block 61 in turn drives the fixing ring 64 to slide, thereby driving the marking pen 63 to slide. During the process of the fixing ring 64 driving the marking pen 63 to slide, the elastic movement of the second spring 65 drives the end of the marking pen 63 to remain in contact with the steel pipe 5. During the sliding of the marking pen 63, the end of the marking pen 63 leaves a mark on the outer wall of the steel pipe 5.

[0047] The implementation principle of the concrete continuous beam construction device in this embodiment is as follows: After the support is erected, when pre-compression testing is required, the connecting seat 3 is connected to the fixed seat 2, so that the steel pipe 5 is located in the receiving cavity 4. The mounting frame 1 supports the fixed seat 2 and the connecting seat 3. At this time, the marking pen 63 abuts against the outer wall of the steel pipe 5. The rotation of the drive motor 72 drives the gear 73 to rotate. The gear 73 meshes with the first half gear 73 to drive the first half gear ring 71 to slide. The rotation of the first half gear ring 71 pushes the second half gear ring 8 to slide. When the first half gear ring 71 pushes the second half gear ring 8 to slide, and the gear 73 meshes with the first half gear ring 71 and the second half gear ring 8, the gear 73 switches from meshing with the first half gear ring 71 to meshing with the second half gear ring 8. The sliding of the second half gear ring 8 then pushes the first half gear ring 71 to slide. The toothed ring 71 slides while the marking pen 63 makes a ring mark during this process to leave a mark on the outer wall of the steel pipe 5. This mark is the initial mark. When pre-compression is performed by hydraulic equipment or other gravity loading equipment, the marking pen 63 is driven to slide to leave marks under different pre-compression amounts. By observing and detecting the difference between two adjacent marks, a set of settlement differences is obtained, and pre-compression detection is performed. After the pre-compression detection is completed, the connecting seat 3 is disassembled to separate the entire device from the steel pipe 5, and the device can be reused. The cooperation of each component in the above process utilizes the steel pipe 5 of the continuous beam support for pre-compression detection. The detection method is intuitive and simple, avoiding the problem of deviation or tilting of the steel cable when tightened, which affects the accuracy of the detection data, as is the case with the steel cable detection used in the prior art.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for constructing continuous concrete beams, characterized in that: The device includes a mounting frame (1), a fixed seat (2) is provided on the mounting frame (1), a connecting seat (3) is detachably connected to the fixed seat (2), and a receiving cavity (4) for placing a steel pipe (5) is formed between the fixed seat (2) and the connecting seat (3); a marking mechanism (6) that abuts against the steel pipe (5) is slidably provided on the fixed seat (2), and a driving mechanism (7) for driving the marking mechanism (6) to slide is provided on the fixed seat (2); When pre-compression testing is required, the connecting seat (3) is connected to the fixed seat (2) so that the steel pipe (5) is located in the receiving cavity (4). The mounting frame (1) supports the fixed seat (2) and the connecting seat (3). At this time, the marking mechanism (6) abuts against the outer wall of the steel pipe (5). The driving mechanism (7) drives the marking mechanism (6) to slide to leave a mark on the outer wall of the steel pipe (5). The mark at this time is the initial mark. When pre-compression is performed by hydraulic equipment or other gravity loading equipment, the driving mechanism (7) drives the marking mechanism (6) to slide to leave marks under different pre-compression amounts. By observing and detecting the difference between two adjacent marks, a set of settlement differences is obtained, and pre-compression testing is performed accordingly. The driving mechanism (7) includes a first half-tooth ring (71) slidably mounted on the fixed base (2), and a driving motor (72) mounted on the fixed base (2). A gear (73) is coaxially fixedly connected to the output shaft of the driving motor (72). The rotation of the gear (73) drives the first half-tooth ring (71) to slide. The marking mechanism (6) is located inside the first half-tooth ring (71). A connecting seat (3) is slidably provided with a part that engages with the first half-tooth ring (71). The second half-tooth ring (8) is engaged with the first half-tooth ring (71) and / or the second half-tooth ring (8); the marking mechanism (6) includes a mounting block (61) slidably disposed on the fixed base (2), the driving mechanism (7) is used to drive the mounting block (61) to slide, the mounting block (61) is provided with a placement cavity (62), a snap-fit ​​seat is provided in the placement cavity (62), a marking pen (63) is snapped on the snap-fit ​​seat, and the end of the marking pen (63) abuts against the steel pipe (5).

2. The apparatus for constructing a continuous concrete beam according to claim 1, characterized in that: The first half-tooth ring (71) is provided with a plug (9), and the second half-tooth ring (8) is provided with a slot (10) for the plug (9) to be inserted.

3. The apparatus for constructing a continuous concrete beam according to claim 2, characterized in that: The slot (10) has a slide (11) and a positioning pin (12) is slidably disposed in the slide (11). A first spring (23) is disposed in the slide (11) and the end of the first spring (23) is fixed to the positioning pin (12). The insert (9) has a positioning hole (13) for the positioning pin (12) to be inserted.

4. The apparatus for constructing a continuous concrete beam according to claim 1, characterized in that: The fixing base (2) is fixed with a first support plate (14) and a first anti-detachment plate (15). The first support plate (14) and the first anti-detachment plate (15) are arranged in parallel. The first half-tooth ring (71) is located between the first support plate (14) and the first anti-detachment plate (15). The first support plate (14) is fixed with a first limiting rod (16). The first half-tooth ring (71) is provided with a first limiting groove (17). The end of the first limiting rod (16) is located in the first limiting groove (17) and slides in cooperation with the first limiting groove (17).

5. The apparatus for constructing a continuous concrete beam according to claim 1, characterized in that: The locking seat includes a fixing ring (64) that slides in the placement cavity (62). A second spring (65) is provided in the placement cavity (62). The end of the second spring (65) abuts against the fixing ring (64). A plurality of elastic locking plates (66) are provided on the fixing ring (64). The locking plates surround and form a locking cavity (67) for locking the marking pen (63).

6. The apparatus for constructing a continuous concrete beam according to claim 5, characterized in that: The elastic plate (66) is provided with a reinforcing pad (68) on the side near the marking pen (63).

7. The apparatus for constructing a continuous concrete beam according to claim 5, characterized in that: A protrusion (69) is fixed inside the placement cavity (62), and a groove (70) is provided on the fixing ring (64). The protrusion (69) is located in the groove (70) and slides in cooperation with the groove (70).

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