A concrete vibrator for core mold room in hollow floor slab construction

Abstract

This application relates to the field of vibration equipment technology and discloses a concrete vibrator for core molds in hollow core slab construction. The vibrator includes a vibrating rod and a sliding plate that can move along the upper surface of a reinforcing cage. A sleeve through which the vibrating rod passes is located at the center of the sliding plate. A cross-hinged rocker arm assembly is provided on the sleeve, and each of the four ends of the rocker arm assembly has clamping legs that can contact the reinforcing cage. This concrete vibrator for core molds in hollow core slab construction, through the coordinated design of a movable sliding plate, a mechanical centering clamping mechanism, and a vibrating rod guiding and stabilizing sleeve, transforms vibration operations from a high-risk manual operation relying on individual worker experience into a streamlined, mechanically assisted, accurate positioning and stable operation. This significantly reduces the probability of core mold breakage, improves the consistency of vibration quality, reduces worker labor intensity, and enhances construction safety.

Description

Technical Field

[0001] This application relates to the field of vibration equipment technology, and in particular to a core mold concrete vibrator for hollow floor slab construction. Background Technology

[0002] A hollow core slab is a type of cast-in-place reinforced concrete hollow core slab, also known as a cast-in-place flat slab. It is formed by installing core molds within a reinforced concrete slab and then casting the core in place, creating a hollow slab structure without exposed beams.

[0003] In the construction of hollow core slabs, the vibration stage is a "high-risk node" for quality control. Due to the small gap between the two core molds, during vibration, factors such as hand shaking, the "whiplash effect" of vibration, and deflection caused by uneven concrete resistance can cause the vibrator to touch the core mold. The core mold wall thickness is usually only 1.5~3mm. The vibrator tip impacts at a high frequency (12,000 times / minute), and even slight scraping can cause punctures, allowing concrete to fill the cavity. This can lead to excessive self-weight, failure of the stress model, and the formation of seepage channels at the damaged area.

[0004] Secondly, because workers hold a vibrator weighing over 20kg with one hand and operate it suspended above a narrow template, they are prone to fatigue. Furthermore, due to the narrow vibration space, the margin for error is low. Therefore, it is difficult for workers to ensure that they do not make mistakes during construction, which reduces the quality of construction. At the same time, remedial measures after making mistakes will also delay the construction period. Summary of the Invention

[0005] This application proposes a concrete vibrator for core molds in hollow floor slab construction. Through the coordinated design of a movable sliding plate, a mechanical centering clamping mechanism, and a vibrator guide stabilizing sleeve, the vibration operation is transformed from a high-risk manual operation that relies on the worker's personal experience into a streamlined, mechanically assisted, accurate positioning and stable operation. This can significantly reduce the probability of core mold breakage, improve the consistency of vibration quality, reduce the labor intensity of workers, and enhance construction safety.

[0006] To achieve the above objectives, this application adopts the following technical solution: a core mold concrete vibrator for hollow floor slab construction, comprising a vibrating rod and a sliding plate that can move along the upper surface of a reinforcing cage. The middle of the sliding plate is provided with a sleeve through which the vibrating rod passes. The sleeve is provided with a cross-hinged rocker arm assembly. Each of the four ends of the rocker arm assembly is provided with clamping legs that can contact the reinforcing cage. The sliding plate is also provided with a rotating plate, and the rotating plate is provided with a handrail. The rotating plate rotates to drive the rocker arm assembly to open and close, so that the clamping legs on both sides move away from or closer to the reinforcing cage.

[0007] Furthermore, the rocker arm assembly consists of two sets of rotating arms, with a rotating ring in the middle of each rotating arm. The rotating ring is movably sleeved on the sleeve, and both rotating rings are connected to the rotating plate in a transmission manner, with the two rotating rings rotating in opposite directions.

[0008] Furthermore, the rotating plate includes a rotating cover movably connected to the sleeve, and a rotating ring is provided on the lower side of the rotating cover. The rotating ring is placed vertically, and a first gear and a second gear are engaged with the rotating ring. The first gear is directly or through an even number of reversing gears to drive one of the rotating rings, and the second gear is driven through an odd number of reversing gears to drive the other rotating ring.

[0009] Furthermore, each end of the rotating arm can be equipped with two sets of adjusting blocks, each set having several sets of connecting holes, and clamping legs can be installed at the ends of the adjusting blocks. This is used to adjust the distance between the clamping legs and the reinforcing cage.

[0010] Furthermore, when the handrail is aligned with the steel reinforcement cage in one direction, the distance between the clamping leg and the steel reinforcement is 5-15mm. This not only limits the skateboard's deviation but also ensures smooth sliding.

[0011] Furthermore, the clamping leg is connected to the rotating arm or adjusting block via a connecting rod, and the clamping leg is threadedly connected to the connecting rod. The height of the clamping leg can be adjusted to accommodate the reinforcing cage.

[0012] Furthermore, the clamping legs are provided with clamping grooves, which can hold the reinforcing bars in place to prevent slippage.

[0013] Furthermore, the vibratory rod is connected to a guide sleeve, which includes a constraint sleeve that can be inserted into the sleeve. The bottom of the constraint sleeve is provided with a clamping sleeve that can clamp the flexible shaft of the vibratory rod. An adjusting sleeve is movably connected to the constraint sleeve, but the adjusting sleeve cannot pass through the sleeve. Adjusting the clamping position of the flexible shaft and the blocking position of the adjusting sleeve adjusts the insertion depth of the vibratory head.

[0014] Furthermore, the outer wall of the adjustment sleeve is provided with several hooks, and the handrail is fixedly connected with a bracket corresponding to the hooks.

[0015] The beneficial effects of this invention are as follows:

[0016] This application provides a concrete vibrator for core molds in hollow floor slab construction. Workers can slide a sliding plate on the reinforcing cage by dragging it with a handrail. The sliding plate is equipped with a cross-hinged rocker arm assembly. The clamping legs at the end of the rocker arm assembly can prevent the sliding plate from deviating too much during sliding and slipping off the reinforcing cage. Before vibration, the sliding plate and the sleeve are centered by rotating the rotating plate, ensuring that the insertion position of the vibrator is centered between the two core molds. This can replace the worker's operating experience with the operation procedure, reduce the randomness of the vibration position, reduce the probability of damage, and improve the consistency of vibration.

[0017] Secondly, the constraint sleeve fits against the inner wall of the casing, and the clamping sleeve clamps the vibrator. The constraint sleeve can easily pass the vibrator through the casing, which reduces the impact of the worker's hand tremors. On the other hand, the clamping sleeve constrains the vibrator at a lower position, reducing the swing amplitude of the vibrator and further reducing the probability of accidentally touching the mandrel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0019] Figure 1 This is a schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the vibration process of the present invention;

[0021] Figure 3 This is a schematic diagram of the rotating plate and rocker arm assembly in this invention;

[0022] Figure 4 This is a bottom view of the rotating plate in this invention;

[0023] Figure 5 This is a schematic diagram of the adjustment block in this invention;

[0024] Figure 6 This is a side view of the present invention.

[0025] In the diagram: 100, vibrator body; 110, slide plate; 120, sleeve; 130, rocker arm assembly; 131, connecting rod; 132, clamping leg; 133, clamping groove; 134, rotating arm; 135, rotating ring; 136, driven gear; 137, adjusting block; 138, connecting hole; 140, rotating plate; 141, rotating ring; 142, first gear; 143, second gear; 144, reversing gear; 145, rotating cover; 150, handrail; 160, guide sleeve; 161, constraint sleeve; 162, clamping sleeve; 163, clamping pad; 164, adjusting sleeve; 165, hook; 166, rotating sleeve; 170, hanger; 180, vibrator rod; 181, vibrating head; 182, flexible shaft; 200, rebar cage; 300, core mold. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1, please refer to Figures 1-2 A concrete vibrator for core molds in hollow floor slab construction is used to vibrate the concrete between two core molds 300. In the standard hollow floor slab design, the gap between any two adjacent core molds 300 (after concrete pouring) constitutes a hidden rib. Stirrups and longitudinal steel bars should be provided at the hidden rib to form a steel cage 200 in the A and B directions. The steel cage 200 should be arranged in the center. In actual construction, the actual offset and dynamic offset after binding should not exceed 5mm.

[0028] The vibrator body 100 includes a slide plate 110, which moves along the upper surface of the reinforcing cage 200. The slide plate 110 is rectangular. To easily pass over the relatively protruding reinforcing steel frames on the reinforcing cage 200, the four sides of the slide plate 110 are provided with guiding arc-shaped guide surfaces. A sleeve 120 is provided in the middle of the slide plate 110. A cross-hinged rocker arm assembly 130 is provided on the sleeve 120. Each of the four ends of the rocker arm assembly 130 is provided with clamping legs 132 that can clamp the reinforcing cage 200. The maximum distance between two adjacent clamping legs 132 is greater than the width of the reinforcing cage 200. The rocker arm assembly 130 consists of two sets of rotating arms 134. A rotating ring 135 is provided in the middle of the boom 134. The rotating ring 135 is movably sleeved on the sleeve 120. A rotating plate 140 is also provided on the slide plate 110. A handrail 150 is provided on the rotating plate 140. For ease of operation, there are two sets of handrails 150. The handrails 150 are fixed to the rotating plate 140 by bolts. The rotating plate 140 is movably sleeved on the sleeve 120. Bearings are provided between the rotating plate 140, the rotating ring 135 and the sleeve 120. The sleeve 120 has three sets of steps, which correspond to the three sets of bearings respectively. Both rotating rings 135 are connected to the rotating plate 140 for transmission, and the two rotating rings 135 rotate in opposite directions.

[0029] During vibration, the slide plate 110 is dragged along the upper surface of the reinforcing cage 200 by the handle 150. When encountering transverse reinforcing bars (reinforcing bars perpendicular to the reinforcing cage 200), the handle 150 is gently lifted or pressed (when the worker is pulling from the front, the front clamping leg 132 needs to be lifted slightly to pass the reinforcing bar, and the rear clamping leg 132 needs to be pressed slightly to pass the reinforcing bar). After passing the reinforcing bar, the four clamping legs 132 are located on both sides of the reinforcing cage 200, which can prevent the slide plate 110 from slipping excessively and falling off, thus achieving the desired vibration effect. When tamping, rotate the handle 150, which drives the two rotating arms 134 to rotate, clamping the reinforcing bars and centering the slide plate 110 and sleeve 120 relative to the reinforcing cage 200. For example, initially, the slide plate 110 moves along direction A and tamps at the designated position. When the rotating plate 140 rotates, the angle of the rocker arm assembly 130 corresponding to direction A decreases, clamping the reinforcing cage 200 in direction A. When the slide plate 110 is dragged to the intersection point, gently lift or press the handle 150 to... The slide plate 110 is lifted on one side, passing over the reinforcing bars. It is then lifted twice along direction A, passing over the two reinforcing bars in direction B, so that the slide plate 110 is in the middle of the intersection. The rotating plate 140 is rotated by the handle 150. On the one hand, the handle 150 is aligned with direction B. On the other hand, the four clamping legs 132 are brought closer to the reinforcing cage 200 in direction B, reducing the deviation of the slide plate 110. It is then lifted twice along direction B, so that the slide plate 110 slides along the reinforcing cage 200 in direction B. After reaching the vibration position, the rotating plate 140 is rotated in the opposite direction, so that the included angle of the rocker arm assembly 130 in direction B is smaller. The clamping legs 132 clamp the reinforcing cage 200 in direction B. Since the reinforcing cage 200 is centered relative to the two core molds 300, the sleeve 120 is at the position farthest from the core mold 300. The vibrator 180 is inserted from the middle of the sleeve 120 for vibration. Compared with manual insertion based on experience, the consistency of each insertion is higher, reducing the probability of accidentally touching the core mold 300.

[0030] Please see Figures 3-5The rotating plate 140 includes a rotating cover 145 movably connected to the sleeve 120. A rotating ring 141 is provided on the lower side of the rotating cover 145. The rotating rings 135 are placed vertically. The upper rotating ring 135 meshes with the rotating ring 141 through a first gear 142, and the lower rotating ring 135 meshes with a second gear 143. The second gear 143 is lower than the height of the rotating ring 141 and does not contact the rotating ring 141. The second gear 143 meshes with a reversing gear 144. The lower side of the reversing gear 144 meshes with the second gear 143, and the upper side meshes with the rotating ring 141. The reversing gear 144 is higher than the lower rotating ring 135. The two rotating rings 135 are respectively provided with driven teeth 136 corresponding to the first gear 142 and the second gear 143. The rotating ring 141, the first gear 142, the second gear 143 and the reversing gear 144 are staggered in height to achieve non-interference and reduce the volume required for the slide plate 110. The above driving through the rotating plate 140 to drive the two rotating rings 135 to move in opposite directions is only used as an example. For example, in other embodiments, a transmission structure can also be set between the two rotating rings 135, and the rotating plate 140 drives one of the rotating rings 135 to rotate, thereby driving the other rotating ring 135 to rotate.

[0031] The rotating arm 134 is connected to an adjusting block 137, which has several sets of connecting holes 138. Each end of the adjusting block 137 is fitted with a clamping leg 132. Because the width of the reinforcing cage 200 varies under different design standards, and it is relatively convenient to drag the sliding plate 110 along the direction of the reinforcing cage 200 using the handrail 150, when the handrail 150 is aligned with the direction of the reinforcing cage 200, the clamping leg 132 is too far from the reinforcing cage 200 and cannot effectively restrain the sliding plate 110, making it prone to deviation and slippage. Each end of the rotating arm 134 is fitted with two sets of adjusting blocks 137 to adjust the rotation of the rotating arm 134. The distance between the handrail 150 and the steel cage 200 in two directions constrains the sliding of the slide plate 110. Ideally, when the handrail 150 is in the same direction as the steel cage 200 in one direction, the distance between the clamping leg 132 and the steel bar is 5-15mm. Due to the error in the binding of the steel cage 200, the width of the steel cage 200 fluctuates, and the slide plate 110 can still slide smoothly. During vibration, the worker drags the slide plate 110 with the handrail 150 to move it. After reaching the vibration position, only a small angle needs to be rotated to make the rotating arm 134 clamp the steel cage 200 and complete the positioning. Then, the vibrator 180 is released for vibration.

[0032] The clamping leg 132 is connected to the rotating arm 134 via the connecting rod 131. The clamping leg 132 is threadedly connected to the connecting rod 131, which allows the height of the clamping leg 132 to be adjusted to accommodate the rebar cage 200. At the same time, the clamping leg 132 is provided with a clamping groove 133, which clamps the rebar to prevent slippage.

[0033] Please see Figure 6 The vibrating rod 180 is connected to a guide sleeve 160, which includes a constraint sleeve 161. The constraint sleeve 161 can be inserted into the sleeve 120. To facilitate insertion into the sleeve 120, the lower end of the constraint sleeve 161 has a tapered section. The bottom of the constraint sleeve 161 has a clamping sleeve 162, which clamps the vibrating rod 180. The side wall of the clamping sleeve 162 is tapered. Tightening the bolts achieves clamping. To reduce the back vibration transmitted from the vibrating rod 180, the inner wall of the clamping sleeve 162 has a buffer pad. The vibrating rod 180 includes a vibrating head 181 and a flexible shaft 182. The clamping sleeve 162 is clamped on the flexible shaft 182. The inner wall of the sleeve 120 has... The clamping pad 163 constrains the constraint sleeve 161. The constraint sleeve 161 is movably connected to the adjusting sleeve 164. The adjusting sleeve 164 cannot pass through the sleeve 120. During layered pouring and vibration, the clamping position of the flexible shaft 182 and the blocking position of the adjusting sleeve 164 are adjusted to adjust the insertion depth of the vibrating head 181. On the one hand, compared with hand, the clamping position of the clamping sleeve 162 clamping the flexible shaft 182 is lower, which can suppress the swing amplitude of the tip and further reduce the probability of the tip accidentally touching the core mold 300. On the other hand, the vibrating head 181 will not be completely pulled out of the sleeve 120, and no alignment is required when inserting, which makes it easier to operate.

[0034] The outer wall of the adjusting sleeve 164 is provided with several hooks 165. The handrail 150 is fixedly connected to a bracket 170 corresponding to the hooks 165. After the restraint sleeve 161 is pulled out, the restraint sleeve 161 can be tilted to one side and hung on the bracket 170. When the vibration is stopped for a long time, the vibrator 180 can be hung on the bracket 170.

[0035] Since the rotating plate 140 may cause the flexible shaft 182 to become tangled when it rotates, in order to facilitate the release of stress, the constraint sleeve 161 is movably connected to the clamping sleeve 162 through the rotating sleeve 166, so that the vibrating rod 180 can rotate relatively freely.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete vibrator for core molds in hollow floor slab construction, comprising a vibrating rod and a sliding plate (110) movable along the upper surface of a reinforcing cage (200), characterized in that, The slide plate (110) has a sleeve (120) in the middle for the vibrating rod to pass through. The sleeve (120) has a cross-hinged rocker arm assembly (130). The four ends of the rocker arm assembly (130) are provided with clamping legs (132) that can contact the steel cage (200). The slide plate (110) also has a rotating plate (140). The rotating plate (140) has a handrail (150). The rotating plate (140) rotates to drive the rocker arm assembly (130) to open and close, so that the clamping legs (132) on both sides move away from or closer to the steel cage (200).

2. The concrete vibrator for core mold room construction of a hollow floor slab according to claim 1, characterized in that, The rocker arm assembly (130) consists of two sets of rotating arms (134). A rotating ring (135) is provided in the middle of the rotating arm (134). The rotating ring (135) is movably sleeved on the sleeve (120). Both rotating rings (135) are connected to the rotating plate (140) for transmission, and the two rotating rings (135) rotate in opposite directions.

3. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 2, characterized in that, The rotating plate (140) includes a rotating cover (145) movably connected to the sleeve (120). A rotating ring (141) is provided on the lower side of the rotating cover (145). The rotating ring (135) is placed vertically. The rotating ring (141) is meshed with a first gear (142) and a second gear (143). The first gear (142) is directly or through an even number of reversing gears to drive one of the rotating rings (135). The second gear (143) is driven through an odd number of reversing gears to drive another rotating ring (135).

4. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 2, characterized in that, Each end of the rotating arm (134) can be equipped with two sets of adjusting blocks (137), and the adjusting blocks (137) are provided with several sets of connecting holes (138). The clamping leg (132) can be installed at the end of the adjusting block (137).

5. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 4, characterized in that, When the handrail (150) is in the same direction as the steel cage (200) in one direction, the distance between the clamping leg (132) and the steel bar is 5-15mm.

6. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 4, characterized in that, The clamping leg (132) is connected to the rotating arm (134) or the adjusting block (137) via the connecting rod (131), and the clamping leg (132) is threadedly connected to the connecting rod (131).

7. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 6, characterized in that, The clamping leg (132) is provided with a clamping groove (133), which can clamp the reinforcing bar.

8. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 1, characterized in that, The vibrating rod (180) is connected to a guide sleeve (160), the guide sleeve (160) includes a constraint sleeve (161), the constraint sleeve (161) can be inserted into the sleeve (120), the bottom of the constraint sleeve (161) is provided with a clamping sleeve (162), the clamping sleeve (162) can clamp the flexible shaft of the vibrating rod (180), the constraint sleeve (161) is movably connected to an adjusting sleeve (164), the adjusting sleeve (164) cannot pass through the sleeve (120).

9. A concrete vibrator for core mold room construction of a hollow floor slab according to claim 8, characterized in that, The outer wall of the adjusting sleeve (164) is provided with several hooks (165), and the armrest (150) is fixedly connected with a hanger (170) corresponding to the hooks (165).

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